When purchasing thermal-break aluminum windows, avoid asking questions like "What's the thickness?" or "Do you have the 108 model”. These won't help you make an informed choice.
Here are five key tips to help you avoid 90% of pitfalls and choose the right products:
1.Check the thermal insulation structure and sample corners: Ask to see the thermal insulation structure and take photos of the sample corners to prevent substitution. Aluminum windows of the same width may have different structures.
An industry insider tip: The aluminum material for 110 and 120 models is often the same, with only the center insulation strip being wider.
2.Pay attention to hardware brands: Don't be easily fooled by hardware labeled "Imported from Germany," as many are fake imports. Domestic brands like Shenzhen Haobo and Foshan Keneng are professional and reliable, particularly for tilt-and-turn windows.
3.Clarify the warranty on insulating glass: 3C certification is a must. Pay special attention to the warranty period for issues like ripples and fogging in insulating glass, and bubbles in laminated glass. The larger the glass area, the thicker the required thickness (see the calculation formula).
4.Understand insulation and sealing strips: Insist on PA66 insulation strips (check the code that includes the material name, national standard, and brand logo, and avoid PVC). EPDM sealing strips (the same material as automotive sealing strips) are sufficient. "Aviation aluminum strips" are purely gimmicky. Installation is crucial (accounting for 70% of the quality), so choose supporting materials from reputable brands like Zhijiang and Guibao.
5.Choose the right screws: Use self-cutting screws or stainless steel grip screws, and avoid "small yellow fish" screws.
Master these tips and you'll confidently purchase high-quality thermal-break aluminum windows.
