The Differences Between Aluminum Alloy Doors And Windows&broken Bridge Aluminum Doors And Windows
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Conceptual and structural differences
1.What are aluminum alloy doors and Windows?
Definition: It is framed with aluminum alloy profiles and undergoes surface treatment processes such as anodizing or fluorocarbon spraying, featuring light weight and corrosion resistance.
Structure: There is no heat insulation layer inside the profile. Metal conducts heat quickly. The heat preservation and sound insulation performance rely on the combination of sealing strips and glass.
2.What are broken bridge aluminum doors and Windows?
Definition: On the inner and outer sides of an aluminum alloy profile, a high-strength material such as polyurethane or nylon is used as a "bridge" to separate them, forming an insulating thermal break structure.
Construction: The cross-section of the profile is divided into inner and outer parts, with thermal insulation strips filled in the middle. This significantly weakens the thermal bridge conduction path, thereby enhancing the thermal insulation, heat preservation and sound insulation effects.
Core performance comparison
| Performance Metric | Aluminum Alloy Windows | Thermal Break Aluminum Windows |
|---|---|---|
| Thermal Conductivity | 160–200 W/m·K | 2–3 W/m·K |
| Insulation Performance | Average, mostly relies on insulated glass | Excellent, reduces energy loss by 15%–20% |
| Sound Insulation Level | 25–30 dB | 35–45 dB |
| Airtightness | Grade 3–4 (China National Standard) | Grade 5–6 (Stricter Testing Standards) |
| Profile Wall Thickness | 1.2–2.0 mm | 2.0–3.0 mm |
| Wind Resistance | Moderate | Excellent, ideal for high-rise buildings and large openings |
| Price Range | ¥400–600/m² (Market Reference) | ¥600–900/m² (Market Reference) |
How to choose the most suitable doors and windows
1.Select the model based on the climate and environment
In cold regions and when there is a large temperature difference between the north and the south, it is advisable to give priority to choosing aluminum alloy doors and Windows with thermal break to enhance the insulation and heat preservation effect.
For mild or budget-limited scenarios, ordinary aluminum alloy doors and Windows can be considered, combined with high-performance insulating glass.
2.Pay attention to the sound insulation and air tightness grades
If it is close to the street and there is a lot of noise around, the combination of broken bridge aluminum and three-pane two-chamber insulating glass will have a better sound insulation effect.
For office buildings and medical institutions with high requirements for air tightness, it is recommended that the aluminum alloy doors and Windows with thermal break pass the national air tightness test of level 5 or above.
3.Calculate energy consumption and long-term costs
Although the initial investment in aluminum alloy doors and Windows with thermal break is relatively high (about 20% to 40% higher), it can significantly reduce the energy consumption of air conditioning and heating, and the investment can be recovered within 3 to 5 years.
Aluminum alloy doors and Windows require a low initial investment, but they may increase the operating costs of air conditioning and heating.
4.Pay attention to brand certification and craftsmanship
When making A purchase, give priority to brands that have ISO9001, CE, and domestic A-level certifications.
Pay attention to the surface treatment of the profiles (fluorocarbon spraying or powder spraying) and the quality of the accessories (hardware parts).
5.Installation and after-sales service
Professional installation can ensure the sealing effect，To ensure that no rework will be required later due to installation issues
A perfect after-sales service (warranty, regular maintenance) is an important guarantee for a long-term user experience.
Frequently Asked Questions
Q1: How much more expensive are aluminum alloy doors and windows with thermal break compared to ordinary aluminum alloy doors and windows?
A1: Market average prices show that aluminum alloy doors and windows with thermal break are about 20% to 40% more expensive than ordinary aluminum alloy doors and windows. However, considering energy efficiency and comfort comprehensively, they offer better value for money.
Q2: How can the thermal insulation performance of aluminum alloy doors and windows be improved?
A2: Double or triple-layer insulating glass can be selected, and the quality of the sealing strips around the doors and windows can be enhanced to help prevent the penetration of cold and hot air.
Q3: In which buildings are aluminum alloy doors and windows with broken bridge technology suitable?
A3: High-end residences, villas, commercial office buildings, schools, hospitals and other scenarios that have high requirements for comfort, sound insulation and energy conservation.
Q4: What is the service life of aluminum alloy doors and windows?
A4: High-quality aluminum alloy doors and windows can last for more than 20 years with proper installation and maintenance, but their thermal insulation and airtightness are slightly inferior to those of broken bridge aluminum ones.
