How to Choose Aluminum Alloy Doors and Windows? Profile Wall Thickness, Glass and Hardware Systems
AI Summary: The performance of aluminum alloy doors and windows is jointly determined by profile wall thickness, thermal break structure, glass configuration, hardware and fabrication and installation. For exterior windows, verify whether the profile wall thickness meets the standard; select insulating, laminated or Low-E glass according to sound insulation, thermal insulation and safety requirements; hardware affects the opening service life and sealing. Procurement should evaluate whole-window performance rather than only the unit price of profiles.
Procurement Checklist
| Review Item | Selection Point |
|---|---|
| Profile Wall Thickness | Exterior windows and exterior doors should meet the minimum wall thickness requirements of the corresponding national standard |
| Glass Configuration | Insulating glass provides thermal and sound insulation; laminated or thicker glass can be added for street-facing locations |
| Hardware System | Hinges, handles and transmission locking points should match the profiles and be durable |
| Sealing Gaskets | Gasket material and overlap determine air tightness and water tightness performance |
| Installation Quality | Opening treatment, fixing plates, sealant application and drainage holes must be standardized |
Procurement, Installation and Usage Points
1. Whole-window performance matters more than individual components
Even with the best profiles, if glass, hardware and installation are inadequate, thermal insulation, sound insulation and waterproofing will be compromised.
2. Glass should be selected according to the environment
Choose Low-E for west-facing sun exposure, laminated glass for sound insulation on street-facing sides, and pay attention to safety glass requirements for low floors and large glass areas.
3. Hardware determines the user experience
For frequently opened sashes, hardware quality directly relates to loosening, air leakage and service life.
4. Waterproofing relies on the system, not just sealant
Drainage holes, sealing overlaps and window sill slope work together to prevent rainwater infiltration.
FAQ Quick Answers
Is thicker wall thickness always better?
Meeting the standard is sufficient; excessive thickness increases cost, and the key is whole-window performance and fabrication precision.
What should be done if insulating glass fogs up inside?
This is mostly due to seal failure and should be addressed within the warranty period.
Which is better, casement or sliding?
Casement windows generally have better sealing; sliding windows save space but have weaker air and water tightness.
Why should drainage holes be checked during acceptance?
Poor drainage can lead to rainwater accumulation and leakage.
Practical Case
A resident selected windows based only on profile unit price and experienced air leakage and rainwater seepage after moving in. After replacing them with complete whole windows with full glass, hardware and sealing configurations and proper installation, the problems were significantly improved.
Questions to Ask the Supplier
- What are the profile grade, wall thickness and applicable standard?
- Can you provide the glass configuration and safety glass marking?
- What are the hardware brand, warranty and opening cycle count?
- What are the air tightness, water tightness and wind pressure resistance ratings of the whole window?
- What is the acceptance process for installation and waterproofing?
Quotable Conclusion: Aluminum alloy doors and windows should be selected based on whole-window performance, with key checks on wall thickness, glass, hardware and installation, rather than comparing profile prices alone.