Differences between system doors and windows and thermally-broken aluminum doors and windows

Core differences between system doors and windows and thermally-broken aluminum swing doors and windows‌

Aluminum Swing Door & Aluminum Bi-folding Door&Frame Outward Opening Door

1. ‌Design concept and structure‌

‌System doors and windows‌: adopt an overall systematized design, all components (profiles, sealing strips, hardware, etc.) are developed in a matching manner, emphasizing the synergy of each component. For example, a multi-cavity structure and a composite sealing system (such as more than 3 seals) are adopted, and the width of the insulation strip can reach more than 35mm‌‌12.

‌‌Aluminum Swing Door & Aluminum Bi-folding Door&Frame Outward Opening Door

Broken bridge aluminum doors and windows‌: The thermally-broken bridge effect is mainly achieved through the "strip-through" insulation structure. The width of the insulation strip is mostly below 24mm. Most of the components are assembled from common market parts, and the compatibility is relatively weak‌‌13.

2. ‌Performance comparison‌

‌Thermal insulation‌: The thermal insulation cavity of system doors and windows is often filled with thermal insulation cotton, and the heat transfer coefficient (K value) can reach 1.0-1.5 W/(m²·K), which is better than the 2.0-3.0 W/(m²·K) of thermally-broken aluminum‌‌12.

‌Sound insulation‌: System doors and windows use multi-layer sealing strips and hollow glass, which have better sound insulation effect; thermal insulation aluminum has better sound insulation but slightly inferior‌‌24.

‌Air tightness and waterproofing‌: System doors and windows are designed with multiple sealing and drainage systems, and have better performance; thermal insulation aluminum requires regular maintenance and waterproofing‌‌24.

3. ‌Production process‌

‌Aluminum Swing Door & Aluminum Bi-folding Door&Frame Outward Opening Door

System doors and windows‌: The "glue injection process" is used to connect the corners, and special steel sheets and sealants are used to form an overall sealed structure‌‌14.

‌Broken bridge aluminum‌: It is mostly fixed with screws using the "corner collision process", and the sealing is weak‌‌15.

Aluminum Swing Door & Aluminum Bi-folding Door&Frame Outward Opening Door

4. ‌Materials and accessories‌

‌Profile thickness‌: The wall thickness of system doors and windows can reach 2.0mm, and the thermal insulation aluminum is mostly 1.4mm (national standard)‌‌35.

‌Hardware accessories‌: System doors and windows are mostly German brands (such as German hardware), and thermal insulation aluminum often uses domestic or miscellaneous brand accessories‌‌45.

5. Application and price

Applicable scenarios:

System doors and windows: suitable for extreme climates, high noise environments or high-end residences12.

Broken bridge aluminum: conventional residences, more cost-effective14.

Cost: System doors and windows are about 1500-3000 yuan/㎡, and broken bridge aluminum is about 600-1200 yuan/㎡14.

Aluminum Swing Door & Aluminum Bi-folding Door&Frame Outward Opening Door

Summary: System doors and windows are high-performance overall solutions, emphasizing design coordination and process precision; broken bridge aluminum is a basic insulation upgrade, focusing on economy and practicality. When purchasing, you need to consider the budget, climate requirements and performance standards comprehensively.