{"id":17575,"date":"2026-04-02T10:01:49","date_gmt":"2026-04-02T04:31:49","guid":{"rendered":"https:\/\/aluminiummagazine.com\/mag\/?p=17575"},"modified":"2026-04-02T10:02:10","modified_gmt":"2026-04-02T04:32:10","slug":"aluminum-aluminium-window-frame-water-leakage-repair","status":"publish","type":"post","link":"https:\/\/aluminiummagazine.com\/mag\/windows\/aluminum-aluminium-window-frame-water-leakage-repair.html","title":{"rendered":"Water Leakage at Aluminium Window Frame-Wall Joints: A Step-by-Step DIY Guide (And When to Call a Pro)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">One of the most frequently reported problems is water penetration where the <strong>aluminum<\/strong> frame meets the wall. This occurs due to differing thermal expansion rates between <strong>aluminium<\/strong> and wall materials, creating capillary cracks over time. Improper sealing during installation is the primary culprit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide will walk you through diagnosing and fixing this problem. We\u2019ll cover a simple DIY approach for minor issues, but more importantly, we\u2019ll clearly outline the scenarios where you must <strong>stop and call a professional<\/strong> to avoid making the problem catastrophically worse.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Part 1:<\/strong> The Problem &amp; The Decision (DIY or Call a Pro?)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Before you pick up a tool, you need to honestly assess your skills. A bad repair job can trap water inside your wall, leading to thousands of dollars in hidden damage.<\/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<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/diy-or-professional-aluminium-window-repair-decision-1024x576.jpg\" alt=\"plit image showing a DIY homeowner with caulking tools and a professional window installer using a moisture meter\" class=\"wp-image-17577\" srcset=\"https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/diy-or-professional-aluminium-window-repair-decision-1024x576.jpg 1024w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/diy-or-professional-aluminium-window-repair-decision-300x169.jpg 300w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/diy-or-professional-aluminium-window-repair-decision-768x432.jpg 768w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/diy-or-professional-aluminium-window-repair-decision.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Assess your skills honestly: minor exterior leaks can be a DIY fix, but interior damage or structural issues require a professional installer.<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">The Root Cause<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Differential Thermal Expansion:<\/strong> <strong>Aluminium<\/strong> expands and contracts with temperature changes at a different rate than brick, wood, or concrete. Over time, this movement can crack even the best sealant.<em>Critical detail:<\/em> <strong>Dark\u2011coloured aluminum frames<\/strong> (e.g., black, charcoal, or dark bronze powder\u2011coated finishes) absorb significantly more solar heat and can reach much higher surface temperatures than silver or white frames. This means they undergo more frequent and extreme expansion\u2011contraction cycles, making proper sealing even more crucial.<\/li>\n\n\n\n<li><strong>Capillary Action:<\/strong> The resulting hairline cracks act like straws, sucking water into the gap between the <strong>aluminum<\/strong> frame and the wall.<\/li>\n\n\n\n<li><strong>Improper Installation:<\/strong> Often, the original sealant was applied poorly, the backing rod wasn\u2019t used, or the flashing behind the <strong>aluminium<\/strong> frame is missing or damaged.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">The Decision Matrix<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>If this sounds like you\u2026<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Your Skill Level<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Recommended Action<\/strong><\/td><\/tr><\/thead><tbody><tr><td>You have a steady hand, basic tools, and the leak is minor (a small drip only during heavy wind\u2011driven rain). You are comfortable working on a ladder.<\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Intermediate<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Proceed with DIY Guide.<\/strong><\/td><\/tr><tr><td>You see water bubbling paint or staining the <strong>inside<\/strong> wall. The frame feels loose. You have no tools. You are uncomfortable on ladders. You don\u2019t know what \u201cbacker rod\u201d or \u201csilicone\u201d is.<\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Beginner \/ Zero Knowledge<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>STOP. CALL A PRO.<\/strong> Do not attempt. You risk structural damage.<\/td><\/tr><tr><td>The wall shows signs of rot, mold, or the <strong>aluminum<\/strong> frame is visibly pulling away from the wall.<\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>All Levels<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>CALL A PRO IMMEDIATELY.<\/strong> This indicates a structural failure.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Part 2:<\/strong> The DIY Guide (<em>For Minor Leaks on the Exterior<\/em>)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This process is for <em>re\u2011sealing<\/em> the exterior joint. It does not fix internal wall damage or broken flashing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tools &amp; Materials You Will Need<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Safety Gear:<\/strong> Safety glasses, work gloves.<\/li>\n\n\n\n<li><strong>Ladder:<\/strong> A sturdy, correctly sized ladder.<\/li>\n\n\n\n<li><strong>Cleaner:<\/strong> Mineral spirits or denatured alcohol, and a stiff\u2011bristled brush (an old toothbrush works).<\/li>\n\n\n\n<li><strong>Putty Knife:<\/strong> A stiff 1\u2011inch or 2\u2011inch putty knife.<\/li>\n\n\n\n<li><strong>Utility Knife:<\/strong> For cutting out old sealant.<\/li>\n\n\n\n<li><strong>Backer Rod:<\/strong> Closed\u2011cell foam rope (sized slightly larger than the gap). <strong>This is non\u2011negotiable<\/strong>; it creates the proper hourglass shape for the sealant.<\/li>\n\n\n\n<li><strong>Sealant:<\/strong> <strong>Neutral\u2011cure silicone<\/strong> (100% silicone, specifically labelled for windows, doors, and masonry).<em>Why?<\/em> Unlike standard acetoxy silicones (the ones that smell like vinegar), neutral\u2011cure silicone does <strong>not<\/strong> release acidic vapours as it cures. Those acidic vapours can corrode <strong>aluminium<\/strong> and weaken the bond to masonry over time. For <strong>aluminum<\/strong> frames, neutral\u2011cure is the only safe choice.<\/li>\n\n\n\n<li><strong>Caulking Gun:<\/strong> A high\u2011quality one for smooth control.<\/li>\n\n\n\n<li><strong>Painter\u2019s Tape:<\/strong> For clean lines.<\/li>\n\n\n\n<li><strong>Dish Soap &amp; Water:<\/strong> For tooling the joint (see Step 7).<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/preparing-aluminium-window-frame-wall-gap-for-sealant-1024x576.jpg\" alt=\"Hands scraping old sealant from gap between aluminium window frame and brick wall, with backer rod and neutral-cure silicone ready\" class=\"wp-image-17578\" srcset=\"https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/preparing-aluminium-window-frame-wall-gap-for-sealant-1024x576.jpg 1024w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/preparing-aluminium-window-frame-wall-gap-for-sealant-300x169.jpg 300w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/preparing-aluminium-window-frame-wall-gap-for-sealant-768x432.jpg 768w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/04\/preparing-aluminium-window-frame-wall-gap-for-sealant.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Proper preparation\u2014removing old sealant, cleaning the gap, and inserting backer rod\u2014is essential for a long\u2011lasting repair.<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>Step-by-Step Instructions<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 1: Safety &amp; Access<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Set up your ladder on stable ground. Ensure you can comfortably and safely reach the entire perimeter of the window or door.<\/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>Step 2: Diagnose First \u2013 Check Weep Holes<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before you cut out any sealant, look at the bottom of the exterior <strong>aluminium<\/strong> frame. You\u2019ll see small slots (weep holes) designed to drain water from the frame\u2019s track.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use a small wire or a toothpick to clear any dirt, insects, or debris from these holes.<\/li>\n\n\n\n<li>Pour a little water into the bottom track; it should flow out through the weep holes within seconds.<\/li>\n\n\n\n<li>If water pools or overflows the interior leg of the frame, the leak you\u2019re seeing may actually be water backing up from clogged weep holes\u2014not a failed frame\u2011wall seal. Clear them first and re\u2011test.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 3: Remove the Old Sealant (The Most Important Step)<\/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\">Do not simply apply new silicone over the old.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use the utility knife and putty knife to scrape away <em>all<\/em> of the old, cracked sealant.<\/li>\n\n\n\n<li>You must expose the actual gap between the <strong>aluminum<\/strong> frame and the wall. It should be clean and dry.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 4: Deep Clean<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use the brush and mineral spirits to scrub the gap. You are cleaning both the <strong>aluminium<\/strong> surface and the wall surface (brick, stucco, wood).<\/li>\n\n\n\n<li>Wipe away all dust, debris, and residue. <strong>Let it dry completely.<\/strong> If the area is damp from a recent rain, wait 24\u201348 hours. Sealant will not bond to a wet surface.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 5: Install Backer Rod<\/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>Look at the gap. If it is deeper than \u00bd inch (12mm), you need backer rod.<\/li>\n\n\n\n<li>Push the foam rod into the gap so it sits about \u00bc inch (6mm) below the surface. This serves three purposes: it fills the deep void, saves sealant, and creates an \u201chourglass\u201d shape that allows the sealant to stretch without tearing.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 6: Mask the Area (For a Pro Finish)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Apply painter\u2019s tape along the edge of the frame and along the wall, leaving only the clean gap exposed. This will make your final finish look professional and save you from a messy clean\u2011up.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 7: Apply the Silicone<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cut the nozzle of the silicone tube at a 45\u2011degree angle. The hole should be slightly smaller than the width of your gap.<\/li>\n\n\n\n<li>Insert the tube into the caulking gun.<\/li>\n\n\n\n<li>Hold the gun at a 45\u2011degree angle. Apply steady pressure and push the silicone into the gap, not just on top of it. You want it to fill the void completely.<\/li>\n\n\n\n<li><strong>Tool the joint for a pro finish:<\/strong> Mix a small bowl of water with a few drops of dish soap. Dip your finger or a plastic spoon in the soapy water, then gently run it over the silicone to smooth it and press it firmly into the gap. The soapy water prevents the silicone from sticking to your skin or the tool, giving you a clean, professional bead.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 8: Remove Tape &amp; Let Cure<\/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>Immediately remove the painter\u2019s tape while the silicone is still wet.<\/li>\n\n\n\n<li>Do not touch it again. Allow it to cure for at least 24\u201348 hours (check the tube for specific times) before exposing it to water.<\/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\"><strong>Part 3:<\/strong> Why You Might Need to Call a Professional<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you are in the \u201cZero Knowledge\u201d category, here\u2019s what a professional does that you might not be equipped for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Diagnosis:<\/strong> A pro can determine if the leak is from the frame\u2011wall joint, a failed gasket in the glass, or clogged weep holes. They can use tools like moisture meters to find hidden damage.<\/li>\n\n\n\n<li><strong>Flashing Repair:<\/strong> If the metal flashing behind the frame was installed incorrectly, simply re\u2011caulking from the outside will trap water <em>inside<\/em> the wall. Fixing this requires removing the exterior cladding or the entire <strong>aluminum<\/strong> window unit.<\/li>\n\n\n\n<li><strong>Structural Issues:<\/strong> If the wall is compromised, a general contractor is needed to rebuild the structural supports before a window installer can re\u2011install the <strong>aluminium<\/strong> frame.<\/li>\n\n\n\n<li><strong>Warranty:<\/strong> If your windows are new or under warranty, a DIY repair might void it. A professional installer will often guarantee their work for a period.<\/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\"><strong>Further Reading &amp; Related Issues<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For more context on maintaining your <strong>aluminium<\/strong> windows and doors, these articles from our archive are helpful:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>For a broader overview of common problems:<\/strong> <a href=\"https:\/\/aluminiummagazine.com\/mag\/magazine\/common-problems-with-aluminium-windows.html\" target=\"_blank\" rel=\"noreferrer noopener\">Common Problems With Aluminium Windows<\/a><em>This guide covers other issues like condensation, hardware failure, and thermal performance, helping you distinguish between a simple sealant issue and a more complex problem.<\/em><\/li>\n\n\n\n<li><strong>To understand why sealing is critical in different climates:<\/strong> <a href=\"https:\/\/aluminiummagazine.com\/mag\/magazine\/good-bad-climate-for-aluminium-doors-and-windows.html\" target=\"_blank\" rel=\"noreferrer noopener\">Good &amp; Bad Climate for Aluminium Doors and Windows<\/a><em>Learn how temperature swings and humidity directly impact the expansion and contraction that cause these leaks.<\/em><\/li>\n\n\n\n<li><strong>For preventative maintenance after the fix:<\/strong> <a href=\"https:\/\/aluminiummagazine.com\/mag\/windows\/how-to-maintain-aluminum-windows.html\" target=\"_blank\" rel=\"noreferrer noopener\">How to Maintain Aluminum Windows<\/a><em>Once your leak is fixed, this guide will help you keep your seals and frames in top condition to prevent future failures.<\/em><\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Summary<\/h2>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Assess the Damage:<\/strong> Is it a minor exterior drip or interior water damage? If interior, <strong>call a pro.<\/strong><\/li>\n\n\n\n<li><strong>Check Weep Holes First:<\/strong> Clear them; a clogged weep hole is often mistaken for a failed joint seal in <strong>aluminum<\/strong> frames.<\/li>\n\n\n\n<li><strong>Gather Tools:<\/strong> If DIYing, you <em>must<\/em> use <strong>neutral\u2011cure silicone<\/strong> and backer rod. Never use cheap, acidic caulk.<\/li>\n\n\n\n<li><strong>Do It Right:<\/strong> Remove old sealant completely, clean thoroughly, install backer rod, and tool with soapy water for a proper, lasting seal.<\/li>\n\n\n\n<li><strong>When in Doubt:<\/strong> Re\u2011sealing a window is a cheap fix compared to repairing a rotted wall frame. If you lack the tools, the confidence, or see signs of serious damage, hire a licensed <strong>aluminium<\/strong> window installer or contractor.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Disclaimer: This guide is for informational purposes. Aluminium Magazine is not liable for any damage resulting from DIY repairs. Always prioritise safety.<\/em><\/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><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>One of the most frequently reported problems is water penetration where the aluminum frame meets the wall. This occurs due to differing thermal expansion rates between aluminium and wall materials, creating capillary cracks over time. Improper sealing during installation is the primary culprit. This guide will walk you through diagnosing and fixing this problem. We\u2019ll &#8230; <a title=\"Water Leakage at Aluminium Window Frame-Wall Joints: A Step-by-Step DIY Guide (And When to Call a Pro)\" class=\"read-more\" href=\"https:\/\/aluminiummagazine.com\/mag\/windows\/aluminum-aluminium-window-frame-water-leakage-repair.html\" aria-label=\"Read more about Water Leakage at Aluminium Window Frame-Wall Joints: A Step-by-Step DIY Guide (And When to Call a Pro)\">Read more<\/a><\/p>\n","protected":false},"author":12,"featured_media":17579,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[4136],"class_list":["post-17575","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows","tag-aluminium-windows-problems"],"_links":{"self":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/17575","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\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/comments?post=17575"}],"version-history":[{"count":0,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/17575\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/media\/17579"}],"wp:attachment":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/media?parent=17575"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/categories?post=17575"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/tags?post=17575"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}