What should you do if there are gaps when installing断桥铝doors and windows?

Release date:

2025-09-01


  First, let’s discuss why there’s a gap left during the measurement and design of thermal-break aluminum doors and windows—specifically, why the final dimensions are slightly smaller than the actual measurements. This is primarily done to account for potential issues during installation: if the window fits perfectly or if the exterior wall happens to be slightly uneven, the window might not slide smoothly into the opening. After all, most exterior walls aren’t perfectly uniform and often have minor variations or imperfections. That’s why, during the measurement and design phase, installers typically use the narrowest point as their reference—after all, it’s practically impossible to manufacture windows that are deliberately cut at an angle!
  Finally, let’s discuss how to properly address gaps when installing broken bridge aluminum doors and windows. Currently, the most common method involves applying polyurethane foam sealant, which expands up to 75 times its original volume—effectively filling any existing gaps as it hardens. Not only does this sealant offer superior waterproofing and insulation, but it also serves as an essential material for installing modern building products such as PVC windows, broken bridge aluminum doors and windows, window frames, and even security doors. After applying the foam sealant to areas where gaps in your broken bridge aluminum doors and windows are significant, once the sealant has dried, you can further enhance protection by adding a layer of waterproof adhesive on top. This dual-layer approach guarantees maximum sealing performance, preventing water infiltration and ensuring your home’s windows remain securely shielded from leaks.
  Secondly, if the broken-bridge aluminum doors and windows are made exactly to the same size as the opening, even a slight unevenness on the exterior wall can make it difficult to fit them in. This not only wastes time but also increases labor costs. That’s why it’s industry practice—and also compliant with national standards—to slightly reduce the dimensions. Another important reason is that certain gaps in the broken-bridge aluminum frames are perfectly suited for applying sealant, ensuring superior sealing and thermal insulation.
  Finally, let’s talk about how to properly handle the gaps when installing断桥铝 (broken bridge aluminum) doors and windows. Currently, the most common method is to apply polyurethane foam sealant, which expands up to 75 times its original volume—meaning it fills any existing gaps as it hardens. Not only does this sealant provide excellent waterproofing and insulation, but it’s also an essential material for installing modern building materials like PVC windows, broken bridge aluminum doors and windows, window frames, and even security doors. After applying the foam sealant to areas where the gaps in your 断桥铝 doors and windows are significant, once the sealant has dried, you can further reinforce the protection by applying a layer of waterproof adhesive on top. This dual-layer approach ensures maximum sealing and prevents water infiltration, keeping your home’s windows securely protected from leaks.

Contact Information

Contact Address: No. 7, Industrial Avenue East, Songxia Industrial Park, Shishan Town, Nanhai District, Foshan City
Warren Doors and Windows, south of Fangshan Road and west of Dongtai Road, Dongcheng Subdistrict, Linqu County, Weifang City, Shandong Province
Become A Deaters :Info@wolunmc.com

National customer service hotline:+86 400-676-9888

WhatsApp:+86-18866798677
Beijing customer service phone number:+86 010-68319888

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