{"id":728,"date":"2026-04-10T16:36:58","date_gmt":"2026-04-10T11:06:58","guid":{"rendered":"https:\/\/www.grefet.com\/blog\/?p=728"},"modified":"2026-04-10T16:36:59","modified_gmt":"2026-04-10T11:06:59","slug":"air-leakage-in-aluminium-windows-causes-and-solutions","status":"publish","type":"post","link":"https:\/\/www.grefet.com\/blog\/air-leakage-in-aluminium-windows-causes-and-solutions\/","title":{"rendered":"Air Leakage in Aluminium Windows: Causes and Solutions"},"content":{"rendered":"\n<p id=\"1d54\">Air leakage in aluminium windows is amongst the most commonly overlooked problems with modern construction, but it directly impacts comfort, energy efficiency and long-term performance. At GREFET, we design\u00a0<a href=\"https:\/\/www.grefet.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">system aluminium windows<\/a>\u00a0to eradicate such inefficiencies at the root and not as an afterthought. So, let\u2019s dissect exactly what creates air leakage and how the proper systems mitigate it. Let&#8217;s learn about air leakage in aluminium windows: causes and solutions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"6065\"><strong>What Does Air Leakage in Aluminium Windows Meant?<\/strong><\/h3>\n\n\n\n<p id=\"0011\">Air leakage refers to the uncontrolled flow of air through gaps in a window system. It is often insidious at first but presents itself as time goes on in the following ways:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It tells you drafts even when windows are closed<\/li>\n\n\n\n<li>Increased dust ingress<\/li>\n\n\n\n<li>Higher cooling and heating costs<\/li>\n\n\n\n<li>Noise penetration<\/li>\n<\/ul>\n\n\n\n<p id=\"4510\">What this actually means is nothing more complicated than: if air can move through something, so too can heat and dust and sound.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3d53\"><strong>Liable Reasons for Air Leakage in Aluminium Windows<\/strong><\/h3>\n\n\n\n<p id=\"217c\"><strong>1.Poor&nbsp;<\/strong><a href=\"https:\/\/www.grefet.com\/fabricators\" rel=\"noreferrer noopener\" target=\"_blank\"><strong>Fabrication<\/strong><\/a><strong>&nbsp;and Installation<\/strong><\/p>\n\n\n\n<p id=\"2d78\">Traditional aluminium windows are locally manufactured and not precision engineered. It creates misaligned joints and uneven sealing surfaces.<\/p>\n\n\n\n<p id=\"3ae4\"><strong>2. Low-Quality Gaskets and Seals<\/strong><\/p>\n\n\n\n<p id=\"421e\">Low-grade EPDM gaskets shrink up and harden, causing micro pock marks that let air through.<\/p>\n\n\n\n<p id=\"9d66\"><strong>3. Lack of System Design<\/strong><\/p>\n\n\n\n<p id=\"8a91\">Non-system windows are built up with each of their parts without running performance tests. Tolerances and joint integrity cannot be controlled.<\/p>\n\n\n\n<p id=\"253d\"><strong>4. Inadequate Locking Mechanisms<\/strong><\/p>\n\n\n\n<p id=\"a982\">In single-point locking, the mechanism pulls the sash against the frame unevenly, leaving gaps even when closed.<\/p>\n\n\n\n<p id=\"cce4\"><strong>5. Structural Movement<\/strong><\/p>\n\n\n\n<p id=\"5fad\">Over time, buildings settle. Nobody makes any engineered allowances, so windows end up with gaps at the interface.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"6947\"><strong>Why Air Leakage Is Issue to Take Seriously<\/strong><\/h3>\n\n\n\n<p id=\"0d14\">Leaving air leakage unaddressed isn\u2019t just a matter of mild annoyance. It affects:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/grefetinternational.blogspot.com\/2025\/09\/energy-efficiency-in-aluminium-windows.html\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Energy Efficiency<\/strong><\/a><strong>:<\/strong>\u00a0Air exchange increases HVAC load<\/li>\n\n\n\n<li><strong>Air Quality:<\/strong>\u00a0Dust and other pollutants penetrate easily<\/li>\n\n\n\n<li><strong>Insulating Sound:<\/strong>\u00a0Noise enters the house<\/li>\n\n\n\n<li><strong>Long-Term Durability:<\/strong>\u00a0Water can ruin insides<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"b146\"><strong>GREFET System Aluminium Windows: The Solution To Air Leakage<\/strong><\/h3>\n\n\n\n<p id=\"a8d3\">At GREFET we take a systems engineering approach to evaluating windows, not just manufacturing products. Here\u2019s how we stop air leakages:<a href=\"https:\/\/medium.com\/plans?source=promotion_paragraph---post_body_banner_rabbit_hole_scribble--084972e4e22a---------------------------------------\"><\/a><\/p>\n\n\n\n<p id=\"01d1\"><strong>1.Precision-Engineered Profiles<\/strong><\/p>\n\n\n\n<p id=\"9b20\">We manufacture the profiles behind the sash and frame with identical tolerances.<\/p>\n\n\n\n<p id=\"4800\"><strong>2. Multi-Point Locking Systems<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pressure distributed consistently across the window perimeter<\/li>\n\n\n\n<li>Fills gaps at corners and edges<\/li>\n<\/ul>\n\n\n\n<p id=\"22d7\"><strong>3. High-Performance EPDM Gaskets<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Retain flexibility over years<\/li>\n\n\n\n<li>Continue to seal even in the event of a movement<\/li>\n<\/ul>\n\n\n\n<p id=\"0dc4\"><strong>4. Factory-Tested Systems<\/strong><\/p>\n\n\n\n<p id=\"9031\">We fully design and test the system for air tightness before it reaches the site.<\/p>\n\n\n\n<p id=\"f4fa\"><strong>5. Controlled Drainage and Sealing Design<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Keeps air and water from flowing back<\/li>\n\n\n\n<li>Maintains internal pressure balance<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"e753\"><strong>Main Solutions for Avoiding Air Leak (Checklist)<\/strong><\/h3>\n\n\n\n<p id=\"6ce6\">When choosing&nbsp;<a href=\"https:\/\/www.grefet.com\/\" rel=\"noreferrer noopener\" target=\"_blank\">aluminium windows<\/a>, ensure they allow:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Design for system instead of local fabrication<\/li>\n\n\n\n<li>Multi-point locking hardware<\/li>\n\n\n\n<li>High-quality EPDM or equivalent gaskets<\/li>\n\n\n\n<li>Proper installation by trained professionals<\/li>\n\n\n\n<li>Tested performance for air infiltration<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"845f\"><strong>The GREFET Advantage<\/strong><\/h3>\n\n\n\n<p id=\"ed97\">The difference isn\u2019t always apparent on day one. However, for the next 10\u201315 years, a properly constructed system window will hold steady in terms of its sealing, performance and comfort levels.<\/p>\n\n\n\n<p id=\"120a\">At GREFET we do not respond to problems after the damage is done. With our&nbsp;<a href=\"https:\/\/www.grefet.com\/\" rel=\"noreferrer noopener\" target=\"_blank\">aluminium window systems<\/a>, we make sure that they do not happen in the first place.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Air leakage in aluminium windows affects comfort, energy efficiency, and durability. Learn its causes and how GREFET system windows eliminate it effectively<\/p>\n","protected":false},"author":1,"featured_media":729,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[957,834,959,958,19,49,56,37,39,23,159,960,380,15,165,163,147,31,961],"class_list":["post-728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-system-aluminium-window","tag-air-leakage-in-aluminium-windows","tag-airtight-aluminium-windows","tag-aluminium-window-insulation","tag-aluminium-window-sealing-problems","tag-aluminium-windows","tag-aluminium-windows-and-doors","tag-best-aluminium-door-and-window-brand","tag-best-aluminium-systems","tag-best-aluminium-windows-and-doors-brand-in-india","tag-best-system-aluminium-door-supplier","tag-energy-efficient-windows-india","tag-epdm-gasket-windows","tag-grefet-aluminium-windows","tag-system-aluminium-windows","tag-system-aluminium-windows-india","tag-top-aluminium-door-and-window-companies","tag-top-aluminium-window-brands","tag-top-system-aluminium-window-supplier-in-india","tag-window-air-leakage-solutions"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Air Leakage in Aluminium Windows: Causes and Solutions - GREFET<\/title>\n<meta name=\"description\" content=\"Air leakage in aluminium windows affects comfort, energy efficiency, and durability. 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