Broken Bridge Aluminum Doors and Windows for Balcony Enclosure? Avoid These 5 Pitfalls!

Who hasn’t been tempted by beautiful broken bridge aluminum doors and windows when enclosing a balcony? But choosing materials can be confusing: products priced at 400 yuan/㎡ and 1,000 yuan/㎡ look similar, and is the “national standard profile” claimed by merchants reliable? As an insider, I’m sharing the purchasing secrets of STATE CROWN custom doors and windows—even beginners can become experts instantly!

1. Price: Is Cheap Really Cost-Effective? Don’t Be Fooled!

Q: If broken bridge aluminum looks the same, is the cheapest option best?

A: Absolutely not! A homeowner chose 400 yuan/㎡ products last year, but the profiles faded and glass fogged within two years, costing double for repairs. Price reflects value—low-cost products often cut corners on profiles and hardware. Expensive isn’t always best, but products under 600 yuan/㎡ are likely problematic.

2. Profiles: The “Backbone” Must Be Strong!

Profiles are key to safety—focus on these two points:

1. Choose primary aluminum: Primary aluminum feels smooth and shiny with impurity-free cross-sections; recycled aluminum is rough, dull, and prone to deformation.
2. Wall thickness standards: New national standards require: exterior window main profiles ≥1.8mm, interior windows ≥1.4mm! 1.8mm works for low-rise buildings; 2.0mm is needed for high-rises/coastal areas (resistant to level 12 typhoons).👉 Tip: Bring a vernier caliper—reject products below standard!

3. Glass: The “Invisible Guard” Covering 80% Area

Wrong glass means poor sound insulation and insulation! Remember these 3 points:

• Standard double insulated tempered glass (sound insulation ≥45dB, blocking neighborhood noise);
• Must have 3C certification: Fading marks mean fake tempered glass;
• Triple insulated glass is recommended for northern regions (3-5℃ warmer in winter).

4. Thermal Strips: PA66 vs. PVC?

Thermal strips determine insulation—here’s the comparison:

Type	Tensile Strength	Heat Distortion Temp	Service Life	Rating
PA66	≥80MPa	240℃	20+ years	★★★★★
PVC	35-48MPa	80℃	3-5 years	★☆☆☆☆

Q: How to distinguish quickly?A: PA66 has a matte finish and burns like protein; PVC is smooth, burns pungently, and softens in high temperatures.

5. Hardware: The “Heart” of Doors & Windows

Hardware wears out—brand products last longer! Top 3 in 2025:

1. Red Oak: Magnetic suspension hinges (≤28dB, ideal for families with kids);
2. HOPPE: Smart handles (anti-misoperation, safe for seniors/children);
3. Kinlong: Typhoon-resistant hinges (essential for coastal areas).

👉 Tip: Verify laser-engraved patent numbers on the intellectual property bureau website!

Balcony enclosure is a long-term investment. Quality broken bridge aluminum doors and windows block wind/rain, and turn balconies into studies or tea corners. Use these tips and choose STATE CROWN—your money deserves value!