{"id":19282,"date":"2026-08-10T14:07:12","date_gmt":"2026-08-10T08:37:12","guid":{"rendered":"https:\/\/aluminiummagazine.com\/mag\/?p=19282"},"modified":"2026-08-10T15:24:10","modified_gmt":"2026-08-10T09:54:10","slug":"curtain-wall-profiles-types-shapes-materials","status":"publish","type":"post","link":"https:\/\/aluminiummagazine.com\/mag\/aluminium\/facade\/curtain-wall-profiles-types-shapes-materials.html","title":{"rendered":"Curtain Wall Profiles: Types, Shapes, Materials &amp; Applications"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">What Are Curtain Wall Profiles?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Curtain wall profiles<\/strong> are custom-extruded aluminium sections that form the primary structural framework of a glass curtain wall system. They create the grid-like skeleton that supports glass panels, transfers wind loads and self-weight, and connects the entire curtain wall system to the building&#8217;s main structure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Think of curtain wall profiles as the <strong>bones of a glass building&#8217;s skin<\/strong>. Without them, the sleek glass facades of modern skyscrapers\u2014from New York to Dubai to Singapore\u2014simply would not exist. These profiles are what make floor-to-ceiling glass architecture structurally possible, weather-tight, and visually stunning.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Curtain wall profiles are <strong>typically custom extrusions<\/strong>, manufactured according to approved drawings, section designs, and project-specific requirements. Because glass curtain wall designs vary by region, building height, wind loads, and local building codes, the required profile sections differ from project to project.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key profile types include:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vertical mullion profiles<\/strong> \u2013 providing vertical load transfer and structural stability<\/li>\n\n\n\n<li><strong>Horizontal transom profiles<\/strong> \u2013 supporting glass panels and defining module spacing<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Why Aluminium Is Commonly Used for Curtain Wall Profiles<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Walk through any major city and look up. The shimmering glass and metal envelopes of skyscrapers are almost always built around aluminium. Steel, wood, fibreglass, and even concrete have been tried, but aluminium has emerged as the <strong>global standard<\/strong> for curtain wall framing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Exceptional Strength-to-Weight Ratio<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Aluminium has a density of approximately <strong>2.70 g\/cm\u00b3<\/strong> \u2014 about one-third that of steel (7.85 g\/cm\u00b3). Yet, with the right alloy and temper, its strength rivals mild steel.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th class=\"has-text-align-center\" data-align=\"center\"><strong>Material<\/strong><\/th><th class=\"has-text-align-center\" data-align=\"center\"><strong>Density (g\/cm\u00b3)<\/strong><\/th><th class=\"has-text-align-center\" data-align=\"center\"><strong>Yield Strength (MPa)<\/strong><\/th><th class=\"has-text-align-center\" data-align=\"center\"><strong>Strength-to-Weight Ratio<\/strong><\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Aluminium 6063-T6<\/td><td class=\"has-text-align-center\" data-align=\"center\">2.70<\/td><td class=\"has-text-align-center\" data-align=\"center\">210<\/td><td class=\"has-text-align-center\" data-align=\"center\">78<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Aluminium 6061-T6<\/td><td class=\"has-text-align-center\" data-align=\"center\">2.70<\/td><td class=\"has-text-align-center\" data-align=\"center\">275<\/td><td class=\"has-text-align-center\" data-align=\"center\">102<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Mild Steel (A36)<\/td><td class=\"has-text-align-center\" data-align=\"center\">7.85<\/td><td class=\"has-text-align-center\" data-align=\"center\">250<\/td><td class=\"has-text-align-center\" data-align=\"center\">32<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Stainless Steel 304<\/td><td class=\"has-text-align-center\" data-align=\"center\">8.00<\/td><td class=\"has-text-align-center\" data-align=\"center\">215<\/td><td class=\"has-text-align-center\" data-align=\"center\">27<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Result:<\/strong> Aluminium offers <strong>2\u20133 times better strength-to-weight ratio<\/strong> than steel. This means thinner, lighter frames that are easier to handle, ship, and install\u2014while still resisting high wind loads.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Natural Corrosion Resistance<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Steel rusts. Wood rots. Aluminium? It <strong>passivates<\/strong>. When exposed to oxygen, aluminium instantly forms a thin, transparent, and self-healing oxide layer (Al\u2082O\u2083). If scratched, the oxide reforms within milliseconds. This is why aluminium curtain walls last <strong>50+ years<\/strong> without structural degradation\u2014even in coastal salt spray or industrial pollution.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Infinite Extrudability<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Curtain walls require:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pressure-equalised drainage cavities (internal gutters)<\/li>\n\n\n\n<li>Gasket retention grooves<\/li>\n\n\n\n<li>Thermal break slots (for inserting polyamide strips)<\/li>\n\n\n\n<li>Interlocking male-female connectors (for unitized systems)<\/li>\n\n\n\n<li>Weep hole channels (pre-formed, not drilled)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Aluminium is <strong>extruded<\/strong> by forcing a heated billet through a steel die. This process can create virtually any cross-section with tolerances as tight as <strong>\u00b10.1 mm<\/strong>. No other curtain wall material\u2014steel, fibreglass, or uPVC\u2014offers such design freedom at a reasonable cost. Complex multi-cavity profiles are produced in a single pass, reducing fabrication and assembly time.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Recyclability and Sustainability<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Today, many curtain wall systems use profiles containing <strong>70\u201380% post-consumer recycled content<\/strong>. Aluminium is infinitely recyclable without loss of quality, making it the most sustainable choice for modern building envelopes.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Related:<\/strong> For a deeper dive into the properties that make aluminium the industry standard, read our article: <strong><a href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/facade\/why-aluminium-used-in-curtain-wall-systems.html\">Why Aluminium Is Used in Curtain Wall Systems<\/a><\/strong> .<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Main Types of Curtain Wall Profiles<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"572\" src=\"https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/08\/curtain-wall-profiles-types-guide-1024x572.jpg\" alt=\"Curtain wall profile types diagram showing mullion profiles (65-325mm depth), transom profiles (50-250mm depth), pressure plates, cover caps, thermal break profiles with polyamide inserts, and multi-chamber box sections in cross-section view\" class=\"wp-image-19284\" srcset=\"https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/08\/curtain-wall-profiles-types-guide-1024x572.jpg 1024w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/08\/curtain-wall-profiles-types-guide-300x167.jpg 300w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/08\/curtain-wall-profiles-types-guide-768x429.jpg 768w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/08\/curtain-wall-profiles-types-guide-1536x857.jpg 1536w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/08\/curtain-wall-profiles-types-guide-2048x1143.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Cross-section diagrams of common curtain wall profile types including mullions (65\u2013325 mm depth), transoms (50\u2013250 mm depth), pressure plates, cover caps, and thermal break profiles with polyamide inserts. Each profile is engineered for specific structural and thermal requirements.<\/em><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Mullion Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Mullion profiles<\/strong> are the <strong>vertical structural members<\/strong> of a curtain wall system. They run the full height of the facade and serve as the primary load-bearing elements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Structural role:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Transfer vertical gravity loads (self-weight of glass and framing) down to the building structure<\/li>\n\n\n\n<li>Resist wind pressure acting perpendicular to the facade<\/li>\n\n\n\n<li>Provide the primary attachment points for anchors and brackets<\/li>\n\n\n\n<li>Define the vertical module of the curtain wall grid<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical configurations:<\/strong><br>Mullion depths typically range from <strong>65 mm to 325 mm<\/strong>. Common depth options include 50 mm, 75 mm, 125 mm, 150 mm, and 175 mm.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">For high-rise buildings with severe wind loads, mullions may require depths of <strong>200 mm or more<\/strong>, often using higher-strength alloys like <strong>6061-T6<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Transom Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Transom profiles<\/strong> are the <strong>horizontal structural members<\/strong> that connect between mullions. They define the horizontal module spacing of the curtain wall grid.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Structural role:<\/strong><\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Support the dead weight of glass panels through setting blocks<\/li>\n\n\n\n<li>Transfer lateral wind loads from the glass into the vertical mullions<\/li>\n\n\n\n<li>Define the horizontal module of the curtain wall<\/li>\n\n\n\n<li>Provide attachment points for spandrel panels and other infill materials<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical configurations:<\/strong><br>Transom depths typically range from <strong>50 mm to 250 mm<\/strong> (depending on glass thickness, span, and load requirements). For larger spans or heavier glass units, depths may extend beyond 250 mm.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pressure Plate Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pressure plate profiles<\/strong> are structural components that clamp glass panels into the frame. In <strong>captured (capped) curtain wall systems<\/strong>, pressure plates press against the glass (through a gasket) to secure it to the frame.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pressure plates are typically made from structural-grade aluminium and are fastened with screws into the framing members. They transfer wind loads from the glass through the gaskets into the mullions and transoms.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Cover Cap Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cover cap profiles<\/strong> are aesthetic components that snap or screw over the pressure plate, concealing fasteners and creating a clean, finished appearance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Key differences from pressure plates:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pressure plate<\/strong> = Structural component (clamps the glass)<\/li>\n\n\n\n<li><strong>Cover cap<\/strong> = Aesthetic component (conceals fasteners)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Cover caps define the visual grid lines of the facade and are available in a wide range of finishes and colours to match architectural requirements.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Corner Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Corner profiles<\/strong> are specialised extrusions used at building corners where two curtain wall planes meet. They accommodate:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>90-degree inside and outside corners<\/li>\n\n\n\n<li>Variable angles for non-rectangular buildings<\/li>\n\n\n\n<li>Structural connections between perpendicular facade planes<\/li>\n\n\n\n<li>Thermal movement at corner junctions<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Starter \/ Base Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Starter profiles<\/strong> (also called base profiles) are installed at the bottom of the curtain wall, typically at the slab edge or ground level. They:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Provide the foundation for the curtain wall system<\/li>\n\n\n\n<li>Incorporate drainage channels and weep holes<\/li>\n\n\n\n<li>Seal the interface between the curtain wall and the building structure<\/li>\n\n\n\n<li>Often include fire-rated seals<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Sill and Head Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sill profiles<\/strong> are installed at the bottom of individual curtain wall modules or openings. <strong>Head profiles<\/strong> are installed at the top. Together, they:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Support glass panels at the top and bottom of each module<\/li>\n\n\n\n<li>Incorporate drainage paths<\/li>\n\n\n\n<li>Provide attachment points for anchors<\/li>\n\n\n\n<li>Accommodate thermal and structural movement<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Structural Glazing Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Structural glazing profiles<\/strong> are designed for <strong>structural silicone glazing (SSG)<\/strong> systems, where glass is bonded to the frame with structural silicone. These profiles:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Have no visible pressure plates or cover caps on the exterior<\/li>\n\n\n\n<li>Create a flush, seamless appearance<\/li>\n\n\n\n<li>Require highly controlled joint design<\/li>\n\n\n\n<li>Transfer <strong>wind loads<\/strong> via adhesive bonding directly to the aluminium sub-frame<\/li>\n\n\n\n<li>Support <strong>dead loads (gravity)<\/strong> mechanically via setting blocks on the transom<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Critical distinction for specifiers:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Wind loads<\/strong> (suction and tension) are handled by <strong>structural silicone<\/strong> bonded to the glass and frame<\/li>\n\n\n\n<li><strong>Dead loads<\/strong> (glass weight) are supported by <strong>setting blocks<\/strong> on the transom\u2014never by silicone alone<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Structural silicone must be specified according to recognised standards:<\/strong><\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ASTM C1184<\/strong> (Standard Specification for Structural Silicone Sealants)<\/li>\n\n\n\n<li><strong>ETAG 002<\/strong> (European Technical Approval Guideline for Structural Sealant Glazing Systems)<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">These standards ensure that structural silicone has:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The required tensile and shear strength<\/li>\n\n\n\n<li>Long-term durability (\u2265 25-year service life)<\/li>\n\n\n\n<li>Compatibility with glass, aluminium, and primer systems<\/li>\n\n\n\n<li>Resistance to UV, temperature extremes, and moisture<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Thermal Break Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Thermal break profiles<\/strong> incorporate insulating barriers between the interior and exterior aluminium sections. These profiles physically separate the two aluminium halves, creating a barrier that heat cannot easily cross.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thermal break profiles are essential for:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reducing heat conduction through the aluminium frame<\/li>\n\n\n\n<li>Minimising condensation on interior surfaces<\/li>\n\n\n\n<li>Lowering the U-factor of the curtain wall<\/li>\n\n\n\n<li>Meeting building energy code requirements<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Related:<\/strong> To understand how thermal breaks can reduce a curtain wall&#8217;s U-value by 50\u201380%, read our detailed article: <strong><a href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/facade\/curtain-walls-energy-savings-thermal-break-explained.html\">Do Curtain Walls Save Energy? (Thermal Break Explained)<\/a><\/strong> .<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Curtain Wall Profile Shapes and Configurations<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Single-Chamber Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Single-chamber profiles<\/strong> have a single hollow cavity within the extrusion. They are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lightweight and cost-effective<\/li>\n\n\n\n<li>Suitable for low-rise buildings with moderate wind loads<\/li>\n\n\n\n<li>Limited in thermal performance (no thermal break)<\/li>\n\n\n\n<li>Typically used in non-thermal curtain wall systems<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Multi-Chamber Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Multi-chamber profiles<\/strong> have two or more hollow cavities separated by internal walls. They offer:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Improved structural performance (higher moment of inertia)<\/li>\n\n\n\n<li>Better thermal performance (multiple air chambers reduce heat transfer)<\/li>\n\n\n\n<li>Enhanced drainage capabilities (separate chambers for water management)<\/li>\n\n\n\n<li>Greater design flexibility for integrating accessories<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Box Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Box profiles<\/strong> have a rectangular or square hollow cross-section. They provide:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Excellent torsional resistance<\/li>\n\n\n\n<li>High strength-to-weight ratio<\/li>\n\n\n\n<li>Clean, modern aesthetic<\/li>\n\n\n\n<li>Internal cavities for drainage and thermal break insertion<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Box profiles are common in premium curtain wall systems where both structural performance and aesthetics are critical.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Reinforced Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Reinforced profiles<\/strong> incorporate additional material or structural elements to increase load capacity. They may include:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Thicker wall sections (up to 6 mm at anchor points)<\/li>\n\n\n\n<li>Internal stiffening ribs<\/li>\n\n\n\n<li>Steel reinforcements inserted into aluminium cavities<\/li>\n\n\n\n<li>Deeper sections for increased moment of inertia<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Reinforced profiles are essential for high-rise buildings, large glass spans, and severe wind load conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Custom Extrusions<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Because glass curtain wall designs vary by project, the required profile sections differ from project to project. <strong>Custom extrusions<\/strong> are manufactured according to approved drawings, section designs, and project-specific requirements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common custom features include:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Integrated gasket grooves<\/li>\n\n\n\n<li>Thermal break cavities<\/li>\n\n\n\n<li>Drainage channels<\/li>\n\n\n\n<li>Interlocking connectors for unitized systems<\/li>\n\n\n\n<li>Pre-formed weep hole channels<\/li>\n\n\n\n<li>Custom aesthetic profiles<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Aluminium Alloys Used in Curtain Wall Extrusions<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Common Architectural Alloys<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Alloy<\/strong><\/th><th><strong>Characteristics<\/strong><\/th><th><strong>Typical Applications<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>6063-T5 \/ T6<\/strong><\/td><td>Excellent extrudability, superior surface finish, good corrosion resistance<\/td><td>Standard curtain wall frames, most common alloy<\/td><\/tr><tr><td><strong>6060-T5 \/ T6<\/strong><\/td><td>Good flow for thin walls and complex sections<\/td><td>Complex extrusions, thin-wall sections<\/td><\/tr><tr><td><strong>6061-T6<\/strong><\/td><td>Higher strength than 6063, good machinability<\/td><td>High-load applications, heavy connections<\/td><\/tr><tr><td><strong>6005 \/ 6005A<\/strong><\/td><td>Medium strength, good extrudability<\/td><td>Structural applications requiring higher strength<\/td><\/tr><tr><td><strong>6082-T6<\/strong><\/td><td>Higher strength than 6061<\/td><td>Heavy-duty structural applications<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Alloy Selection Criteria<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6063<\/strong> is the go-to alloy for curtain wall frames due to its <strong>excellent extrudability<\/strong> and <strong>superior surface finish<\/strong>. As the most widely used alloy for architectural extrusions, 6063 has literally shaped the modern world.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6060<\/strong> offers good flow for thin walls and complex sections, though it has slightly lower strength than 6063.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6061<\/strong> provides higher strength and is suitable where load or connection demands are greater. For severe wind loads or large spans, some systems specify <strong>6061-T6<\/strong> alloy with <strong>200 mm+ mullion depth<\/strong>.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6082<\/strong> is used for improved strength in heavy-duty structural applications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Extrudability<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Extrudability is the defining characteristic of architectural alloys. Aluminium 6063 earns its distinction through this virtue. The incredible forming characteristics of aluminium 6063 allow fabricators to effortlessly produce highly intricate, complex extrusions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Surface Finish Compatibility<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Different alloys respond differently to surface treatments:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>6063<\/strong> reacts exceptionally well to anodizing and powder coating<\/li>\n\n\n\n<li><strong>6060<\/strong> also provides good surface finish quality<\/li>\n\n\n\n<li><strong>6061<\/strong> can show slight surface differences after anodizing due to its different chemistry<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Related:<\/strong> For a detailed look at the alloys used in curtain walls, check our guide on <strong><a href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/aluminum-6063-alloy-aluminium-windows-doors-extrusion.html\">Aluminium 6063 Alloy for Windows, Doors, and Extrusion<\/a><\/strong> .<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Thermal-Break Curtain Wall Profiles<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Polyamide Thermal Barriers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>thermal break<\/strong> is a low-conductivity material inserted between the interior and exterior aluminium sections of a curtain wall frame. It physically separates the two aluminium halves, creating a barrier that heat cannot easily cross.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The thermal break material is typically:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Polyamide 6.6 (nylon) reinforced with 25% glass fibre<\/strong> \u2014 conductivity \u2248 0.3 W\/m\u00b7K<\/li>\n\n\n\n<li><strong>Polyurethane foam<\/strong> (poured and debridged) \u2014 conductivity \u2248 0.2\u20130.25 W\/m\u00b7K<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These materials conduct heat <strong>600\u20131,000 times less<\/strong> than aluminium.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How Thermal Breaks Work<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Feature<\/strong><\/th><th><strong>Non-Thermal Aluminium Frame<\/strong><\/th><th><strong>Thermal Break Aluminium Frame<\/strong><\/th><\/tr><\/thead><tbody><tr><td>U-value (frame only)<\/td><td>~5.7 W\/m\u00b2\u00b7K<\/td><td>~1.4\u20132.2 W\/m\u00b2\u00b7K<\/td><\/tr><tr><td>Condensation resistance<\/td><td>Poor<\/td><td>Good<\/td><\/tr><tr><td>Winter energy loss<\/td><td>High<\/td><td>Low<\/td><\/tr><tr><td>Summer heat gain<\/td><td>High<\/td><td>Reduced<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">When combined with double or triple glazing (Low-E coated, argon-filled), a thermally broken curtain wall can achieve whole-unit U-values as low as <strong>0.8\u20131.2 W\/m\u00b2\u00b7K<\/strong> \u2014 meeting or exceeding most building energy codes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Thermal Break Manufacturing Methods<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Crimped \/ Roll-Formed Thermal Break<\/strong><\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Two separate aluminium extrusions (interior and exterior) are mechanically crimped onto a polyamide strip<\/li>\n\n\n\n<li>Applications: Windows and curtain walls<\/li>\n\n\n\n<li>U-value range: 1.8\u20132.5 W\/m\u00b2\u00b7K (frame only)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Pour-and-Debridge (Cast) Thermal Break<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A single aluminium extrusion with a cavity is filled with liquid polyurethane foam<\/li>\n\n\n\n<li>The aluminium bridge is then mechanically removed (debridged)<\/li>\n\n\n\n<li>Creates a continuous thermal barrier with no mechanical joint<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">When Thermal Breaks Are Needed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Thermal breaks are required when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The building is in a <strong>cold climate<\/strong> (winter condensation risk)<\/li>\n\n\n\n<li>The building is in a <strong>hot climate<\/strong> (summer heat gain concerns)<\/li>\n\n\n\n<li><strong>Energy codes<\/strong> mandate specific U-values<\/li>\n\n\n\n<li><strong>Condensation resistance<\/strong> is critical for occupant comfort<\/li>\n\n\n\n<li>The project seeks <strong>green building certification<\/strong> (LEED, BREEAM)<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Related:<\/strong> For a deeper understanding of thermal break terminology and performance, read our article: <strong><a href=\"https:\/\/aluminiummagazine.com\/mag\/efficiency\/thermal-break-energy-efficient-terms.html\">Thermal Break Energy-Efficient Terms Explained<\/a><\/strong> .<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Curtain Wall Profile Finishes<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Anodized Finish<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Anodizing<\/strong> electrochemically thickens the natural oxide layer on aluminium.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Property<\/strong><\/th><th><strong>Details<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Durability<\/strong><\/td><td>25+ years of maintenance-free life<\/td><\/tr><tr><td><strong>Colour range<\/strong><\/td><td>Clear, bronze, black, and other metallic shades<\/td><\/tr><tr><td><strong>Aesthetic<\/strong><\/td><td>Metallic appearance, retains the natural look of aluminium<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Architectural applications requiring a metallic finish<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Related:<\/strong> For a comparison of anodizing and powder coating, read our article: <strong><a href=\"https:\/\/aluminiummagazine.com\/mag\/magazine\/powder-coating-vs-anodizing.html\">Powder Coating vs Anodizing<\/a><\/strong> .<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Powder Coating<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Powder coating<\/strong> adds a durable, coloured polymer layer (usually 60\u201380 microns) to the aluminium surface.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Property<\/strong><\/th><th><strong>Details<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Durability<\/strong><\/td><td>15\u201325 years with proper specification<\/td><\/tr><tr><td><strong>Colour range<\/strong><\/td><td>Any RAL colour, custom colours available<\/td><\/tr><tr><td><strong>Aesthetic<\/strong><\/td><td>Matte, gloss, or textured finishes<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Projects requiring specific colours or design flexibility<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For profiles exposed to strong sunlight, specify high-durability outdoor powders (e.g., super-durable polyester) to enhance chalking and colour retention.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PVDF (Fluorocarbon) Coating<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PVDF coatings<\/strong> use fluoropolymers and meet <strong>AAMA 2605<\/strong> standards.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Property<\/strong><\/th><th><strong>Details<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Durability<\/strong><\/td><td>30+ years, exceptional weathering resistance<\/td><\/tr><tr><td><strong>Colour stability<\/strong><\/td><td>Strong colour stability and gloss retention for decades<\/td><\/tr><tr><td><strong>UV resistance<\/strong><\/td><td>Excellent\u2014ideal for high-UV environments<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Large facades, coastal environments, high-UV locations<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">PVDF coatings are often used for areas that need consistent colour and strong UV resistance. They are the premium choice for high-rise curtain walls where long-term colour retention is critical.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Wood-Effect Finishes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Wood-effect finishes<\/strong> (also called woodgrain or wood transfer finishes) apply a realistic wood pattern to aluminium profiles.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Property<\/strong><\/th><th><strong>Details<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Durability<\/strong><\/td><td>Good\u2014protected by the underlying coating system<\/td><\/tr><tr><td><strong>Aesthetic<\/strong><\/td><td>Realistic wood appearance without maintenance concerns<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Projects requiring a natural wood aesthetic with aluminium durability<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How Curtain Wall Profiles Are Manufactured<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 1<\/strong>: Billet Preparation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The process begins with <strong>aluminium billets<\/strong>\u2014cylindrical blocks of aluminium alloy (typically 6063, 6060, or 6061). These billets are heated to approximately <strong>450\u2013500\u00b0C<\/strong>, making them malleable for extrusion.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 2<\/strong>: Extrusion<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The heated billet is loaded into a container within an extrusion press. A hydraulic ram forces the billet through a <strong>steel die<\/strong> that has been precision-machined to the desired profile cross-section.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The extruded profile emerges from the die in the exact shape of the die opening\u2014whether a simple rectangle or a complex multi-cavity section with integrated gasket grooves, thermal break slots, and drainage channels.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 3<\/strong>: Quenching (Cooling)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The extruded profile is immediately <strong>quenched<\/strong> (rapidly cooled) using air or water. This fixes the shape and locks in the mechanical properties of the alloy.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: Stretching<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The profile is <strong>stretched<\/strong> to straighten it and relieve internal stresses. This ensures dimensional accuracy and prevents warping during subsequent processing.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 5<\/strong>: Aging (Heat Treatment)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The profile is <strong>aged<\/strong> in a furnace to achieve the desired temper (T5 or T6). Aging precipitates alloying elements within the aluminium matrix, increasing strength and hardness.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 6<\/strong>: Cutting<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The extruded profile is cut to specified lengths\u2014typically <strong>6\u20138 metres<\/strong> for transport, or to project-specific lengths for fabrication.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 7<\/strong>: Machining<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Profiles are machined to add:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Drilled holes for connections and anchors<\/li>\n\n\n\n<li>Notches for transom connections<\/li>\n\n\n\n<li>End details for unitized interlocking<\/li>\n\n\n\n<li>Weep hole openings<\/li>\n\n\n\n<li>Thermal break slots<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 8<\/strong>: Surface Finishing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Profiles are finished with anodizing, powder coating, PVDF coating, or other specified finishes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 9<\/strong>: Assembly (Unitized Systems)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For <strong>unitized systems<\/strong>, profiles are assembled into complete panels in the factory, including glass installation, gaskets, and seals. These panels arrive at the job site ready to be lifted by crane and bolted directly to the building.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How to Select the Right Curtain Wall Profile<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Building Height<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Low-rise (1\u20134 stories):<\/strong> Standard profiles (50\u2013125 mm depth), 6063-T5 alloy<\/li>\n\n\n\n<li><strong>Mid-rise (5\u201310 stories):<\/strong> Deeper profiles (125\u2013175 mm depth), 6063-T6 alloy<\/li>\n\n\n\n<li><strong>High-rise (10+ stories):<\/strong> Deep profiles (175\u2013325 mm depth), 6061-T6 or 6082-T6 alloy<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Wind Load<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Wind load is calculated per <strong>EN 1991-1-4<\/strong> or local standards, depending on building height and terrain roughness. Higher wind loads require:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Deeper mullion sections<\/li>\n\n\n\n<li>Thicker profile walls (minimum 2.0\u20133.0 mm for structural applications)<\/li>\n\n\n\n<li>Higher-strength alloys (6061-T6 or 6082-T6)<\/li>\n\n\n\n<li>Reinforced sections or additional stiffening<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Glass Weight<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The profile must support the dead weight of glass panels. Factors include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Glass thickness (6\u201319 mm or more)<\/li>\n\n\n\n<li>Glass type (monolithic, laminated, IGU)<\/li>\n\n\n\n<li>Panel size (larger panels = heavier weight)<\/li>\n\n\n\n<li>Horizontal profiles (transoms) typically carry glass weight<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Span<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Deflection under design wind pressure must not exceed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>L\/175<\/strong> (for spans up to 4.1 m) per AAMA TIR-A11<\/li>\n\n\n\n<li><strong>L\/240 + 6 mm<\/strong> (or <strong>L\/240 + \u00bc inch<\/strong> \/ <strong>6.35 mm<\/strong> for US customary units) for longer spans<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Note:<\/strong> Standard metric architectural facade codes (e.g., CWCT \/ EN standards) typically specify <strong>L\/240 + 6 mm<\/strong>, while US codes may specify <strong>L\/240 + \u00bc inch (6.35 mm)<\/strong> . The metric equivalent is often rounded to 6 mm.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Larger spans require:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Deeper profiles (increased moment of inertia)<\/li>\n\n\n\n<li>Thicker walls<\/li>\n\n\n\n<li>Higher-strength alloys<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Thermal Requirements<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Warm climates:<\/strong> Basic thermal breaks may be sufficient<\/li>\n\n\n\n<li><strong>Cold climates:<\/strong> Wide thermal breaks (19 mm+), double thermal breaks<\/li>\n\n\n\n<li><strong>Passive house:<\/strong> Minimum 19 mm thermal break width, triple glazing, warm-edge spacers<\/li>\n\n\n\n<li><strong>Energy codes:<\/strong> Match U-value requirements with appropriate thermal break design<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Drainage<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Select profiles with:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pre-formed weep hole channels (not drilled on-site)<\/li>\n\n\n\n<li>Internal drainage cavities<\/li>\n\n\n\n<li>Pressure-equalised chamber design<\/li>\n\n\n\n<li>Compatible drainage accessories<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Finish<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Anodized:<\/strong> Metallic appearance, 25+ year durability<\/li>\n\n\n\n<li><strong>Powder coated:<\/strong> Any colour (RAL), 15\u201325 year durability<\/li>\n\n\n\n<li><strong>PVDF:<\/strong> Premium weathering resistance, 30+ year durability, AAMA 2605 compliant<\/li>\n\n\n\n<li><strong>Wood-effect:<\/strong> Natural wood aesthetic with aluminium durability<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Standard vs Custom Profiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Standard profiles<\/strong> are pre-designed and available from multiple manufacturers. They offer:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lower cost (no die fees)<\/li>\n\n\n\n<li>Shorter lead times<\/li>\n\n\n\n<li>Proven performance<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Custom profiles<\/strong> are designed for specific projects. They offer:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Design flexibility<\/li>\n\n\n\n<li>Project-specific features<\/li>\n\n\n\n<li>Higher cost (die fees, longer lead times)<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Related:<\/strong> For a comparison of stick and unitized systems, read our article: <strong><a href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/facade\/tick-vs-unitized-curtain-wall-comparison.html\">Stick Curtain Wall vs Unitized Curtain Wall \u2013 Which Is Better?<\/a><\/strong> .<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Curtain Wall Profile Tolerances and Quality Checks<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Dimensional Tolerances<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 are manufactured according to <strong>EN 12020-2<\/strong> tolerances on dimensions and form.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Parameter<\/strong><\/th><th><strong>Typical Tolerance<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Cross-section dimensions<\/td><td>Per EN 12020-2<\/td><\/tr><tr><td>Length<\/td><td>\u00b16% of theoretical weight<\/td><\/tr><tr><td>Wall thickness<\/td><td>1.4\u20136.0 mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Quality Checks<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Material testing:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Alloy verification (spectrometer analysis)<\/li>\n\n\n\n<li>Mechanical properties (tensile, yield strength, hardness)<\/li>\n\n\n\n<li>Grain structure (metallographic examination)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Dimensional inspection:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cross-section dimensions (CMM or optical measurement)<\/li>\n\n\n\n<li>Straightness (laser or dial gauge)<\/li>\n\n\n\n<li>Twist and warpage<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Surface inspection:<\/strong><\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Visual inspection for scratches, dents, or die lines<\/li>\n\n\n\n<li>Coating thickness measurement (anodizing, powder, PVDF)<\/li>\n\n\n\n<li>Colour matching (spectrophotometer)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Testing standards:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ASTM<\/strong> for material and test methods (ASTM B209 for aluminium sheet, ASTM B117 for salt spray)<\/li>\n\n\n\n<li><strong>AAMA<\/strong> for curtain wall performance and coating standards<\/li>\n\n\n\n<li><strong>EN<\/strong> standards covering structural behaviour and air\/water infiltration<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Curtain Wall Profiles vs Window &amp; Door Profiles<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Feature<\/strong><\/th><th><strong>Curtain Wall Profiles<\/strong><\/th><th><strong>Window &amp; Door Profiles<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Wall thickness<\/strong><\/td><td>Minimum 2.0\u20133.0 mm structural<\/td><td>Often 1.4 mm for residential applications<\/td><\/tr><tr><td><strong>Depth<\/strong><\/td><td>65\u2013325 mm (mullions)<\/td><td>Typically 50\u2013100 mm<\/td><\/tr><tr><td><strong>Span<\/strong><\/td><td>Multiple floors<\/td><td>Single opening<\/td><\/tr><tr><td><strong>Loads<\/strong><\/td><td>High wind loads, heavy glass, seismic<\/td><td>Moderate wind loads<\/td><\/tr><tr><td><strong>Thermal breaks<\/strong><\/td><td>Typically required (wide 19 mm+)<\/td><td>Optional, often narrower<\/td><\/tr><tr><td><strong>Drainage<\/strong><\/td><td>Complex pressure-equalised systems<\/td><td>Simple weep holes<\/td><\/tr><tr><td><strong>Connections<\/strong><\/td><td>Heavy anchors, brackets, shear blocks<\/td><td>Simple screw connections<\/td><\/tr><tr><td><strong>Customisation<\/strong><\/td><td>Almost always custom-extruded<\/td><td>Often standard profiles<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u26a0\ufe0f Critical Safety Note:<\/strong> Do not use residential window-grade extrusions (1.4 mm wall thickness) for structural curtain wall applications. The minimum 2.0\u20133.0 mm thickness is a critical safety requirement\u2014not optional.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Common Problems With Poor-Quality Curtain Wall Profiles<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Profile distortion:<\/strong><\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Caused by improper extrusion or quenching<\/li>\n\n\n\n<li>Results in misaligned glass panels and compromised seals<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Inconsistent wall thickness:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Caused by worn dies or improper extrusion parameters<\/li>\n\n\n\n<li>Results in weak points and potential structural failure<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Poor surface finish:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Caused by improper die design or extrusion temperature<\/li>\n\n\n\n<li>Results in visible defects after anodizing or coating<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Inadequate corrosion protection:<\/strong><\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Caused by thin anodizing or poor powder coating adhesion<\/li>\n\n\n\n<li>Results in premature corrosion and aesthetic degradation<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Incorrect alloy or temper:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Caused by poor quality control<\/li>\n\n\n\n<li>Results in lower strength than specified\u2014potential structural failure<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Poor dimensional accuracy:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Caused by improper die design or extrusion process<\/li>\n\n\n\n<li>Results in assembly difficulties, misaligned connections, and leaks<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Inadequate thermal break:<\/strong><\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Caused by poor polyamide quality or improper crimping<\/li>\n\n\n\n<li>Results in thermal bridging, condensation, and energy loss<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Curtain Wall Profile Buying Checklist<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Before You Buy:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2610 <strong>Confirm project requirements:<\/strong> Building height, wind load, seismic zone, thermal performance<\/li>\n\n\n\n<li>\u2610 <strong>Select appropriate alloy:<\/strong> 6063-T6 (standard), 6061-T6 (high strength), or 6082-T6 (heavy duty)<\/li>\n\n\n\n<li>\u2610 <strong>Specify profile depths:<\/strong> Mullion depth (65\u2013325 mm), transom depth (50\u2013250 mm)<\/li>\n\n\n\n<li>\u2610 <strong>Verify wall thickness:<\/strong> Minimum 2.0\u20133.0 mm for structural applications<\/li>\n\n\n\n<li>\u2610 <strong>Confirm thermal break requirements:<\/strong> Single, double, or none; polyamide width<\/li>\n\n\n\n<li>\u2610 <strong>Choose finish:<\/strong> Anodized, powder coated, PVDF, or wood-effect<\/li>\n\n\n\n<li>\u2610 <strong>Specify tolerances:<\/strong> EN 12020-2 or equivalent<\/li>\n\n\n\n<li>\u2610 <strong>Confirm drainage design:<\/strong> Weep holes, drainage cavities, pressure equalisation<\/li>\n\n\n\n<li>\u2610 <strong>Verify glass compatibility:<\/strong> Glass pocket size, gasket grooves<\/li>\n\n\n\n<li>\u2610 <strong>Check certification:<\/strong> ISO 9001, relevant industry standards (AAMA, CWCT)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">When Comparing Suppliers:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2610 <strong>Ask about die design capabilities:<\/strong> Can they handle complex profiles?<\/li>\n\n\n\n<li>\u2610 <strong>Request material certificates:<\/strong> Alloy verification, mechanical properties<\/li>\n\n\n\n<li>\u2610 <strong>Check lead times:<\/strong> Extrusion, finishing, delivery<\/li>\n\n\n\n<li>\u2610 <strong>Verify quality control processes:<\/strong> Dimensional inspection, surface inspection<\/li>\n\n\n\n<li>\u2610 <strong>Ask about minimum order quantities (MOQs):<\/strong> Custom profiles may have high MOQs<\/li>\n\n\n\n<li>\u2610 <strong>Confirm finishing capabilities:<\/strong> Anodizing, powder coating, PVDF in-house?<\/li>\n\n\n\n<li>\u2610 <strong>Request references:<\/strong> Similar projects, similar specifications<\/li>\n\n\n\n<li>\u2610 <strong>Check warranty terms:<\/strong> Duration, coverage, exclusions<\/li>\n\n\n\n<li>\u2610 <strong>Ask about technical support:<\/strong> Engineering assistance, shop drawings<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">What a Quotation Should Include:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2610 Profile descriptions (type, alloy, temper, finish)<\/li>\n\n\n\n<li>\u2610 Quantities (lengths, weights, number of pieces)<\/li>\n\n\n\n<li>\u2610 Dimensional drawings (cross-sections, lengths)<\/li>\n\n\n\n<li>\u2610 Unit pricing and total cost<\/li>\n\n\n\n<li>\u2610 Die charges (if custom profiles)<\/li>\n\n\n\n<li>\u2610 Lead time (extrusion, finishing, delivery)<\/li>\n\n\n\n<li>\u2610 Payment terms<\/li>\n\n\n\n<li>\u2610 Warranty information<\/li>\n\n\n\n<li>\u2610 Exclusions (what&#8217;s NOT included)<\/li>\n\n\n\n<li>\u2610 Delivery terms (Incoterms)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Find Aluminium Extrusion &amp; Curtain Wall Suppliers<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Looking for curtain wall profile suppliers for your next project? Browse our curated directory of manufacturers and suppliers:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <strong><a href=\"https:\/\/aluminiummagazine.com\/suppliers\/?category=22&amp;location=&amp;search=Curtain+Wall\">Find Aluminium Extrusion &amp; Curtain Wall Suppliers<\/a><\/strong><\/p><script>document.addEventListener(\"DOMContentLoaded\",function(){\n        if(window.innerWidth <= 768){\n            if (\"immediate\" === \"delay\") {\n                setTimeout(function(){document.querySelectorAll(\".pai-ad\").forEach(el=>el.style.visibility=\"visible\")},0);\n            } else if (\"immediate\" === \"scroll\") {\n                window.addEventListener(\"scroll\",function(){\n                    let s=window.scrollY\/(document.body.scrollHeight-window.innerHeight);\n                    if(s>0.1){\n                        document.querySelectorAll(\".pai-ad\").forEach(el=>el.style.visibility=\"visible\");\n                    }\n                });\n            } else {\n                document.querySelectorAll(\".pai-ad\").forEach(el=>el.style.visibility=\"visible\");\n            }\n        } else {\n            document.querySelectorAll(\".pai-ad\").forEach(el=>el.remove());\n        }\n    });<\/script>","protected":false},"excerpt":{"rendered":"<p>What Are Curtain Wall Profiles? Curtain wall profiles are custom-extruded aluminium sections that form the primary structural framework of a glass curtain wall system. They create the grid-like skeleton that supports glass panels, transfers wind loads and self-weight, and connects the entire curtain wall system to the building&#8217;s main structure. Think of curtain wall profiles &#8230; <a title=\"Curtain Wall Profiles: Types, Shapes, Materials &amp; Applications\" class=\"read-more\" href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/facade\/curtain-wall-profiles-types-shapes-materials.html\" aria-label=\"Read more about Curtain Wall Profiles: Types, Shapes, Materials &amp; Applications\">Read more<\/a><\/p>\n","protected":false},"author":11,"featured_media":19283,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4156],"tags":[4157,4158],"class_list":["post-19282","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-facade","tag-curtain-wall","tag-facade"],"_links":{"self":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/19282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/comments?post=19282"}],"version-history":[{"count":2,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/19282\/revisions"}],"predecessor-version":[{"id":19286,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/19282\/revisions\/19286"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/media\/19283"}],"wp:attachment":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/media?parent=19282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/categories?post=19282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/tags?post=19282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}