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Shenzhen home decoration super white glass laminated glass manufacturer balcony sealing glass selection and installation points

Release time:

Mar 28,2025

The choice and installation of balcony glass directly affect lighting, sound insulation, heat insulation, safety, and overall aesthetics. Material, performance, budget, and construction details must be considered comprehensively. The following are key points:

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I. Glass Type Selection

1. Basic Performance Requirements

- Ordinary Float Glass:

- Advantages: Low cost, good light transmission.

- Disadvantages: Poor sound insulation, poor heat insulation, fragile and unsafe.

- Suitable for: Scenarios with limited budget and low performance requirements.

- Tempered Glass (Required):

- Advantages: High strength (3~5 times that of ordinary glass), breaks into granular pieces, high safety.

- Note: Choose tempered glass with "3C certification", recommended thickness ≥5mm.

- Insulated Glass:

- Structure: Two pieces of glass with a layer of dry air in between (common 9mm/12mm/15mm).

- Advantages: Sound insulation (noise reduction 25~40dB), heat insulation (reduces heat conduction by 50%), suitable for areas near streets or with large temperature differences.

- Laminated Glass:

- Structure: Two pieces of glass with a PVB interlayer.

- Advantages: Explosion-proof, impact-resistant (even if broken, it will remain attached to the interlayer), suitable for high-rise buildings or areas prone to typhoons.

- Low-E Glass:

- Advantages: Coated with a low-emissivity film, reflects infrared rays, heat insulation in summer, heat preservation in winter, strong energy saving.

- Suitable for: Areas with high heat insulation requirements (such as the north).

II. Core Installation Points

1. Profiles and Frames

- Profile Selection:

- Break-bridge aluminum (preferred): Good heat insulation, high strength, long lifespan (recommended wall thickness ≥1.4mm).

- Plastic steel: Excellent heat insulation and sound insulation, but low strength, easy to age, suitable for low budgets.

- Frame Reinforcement:

- High-rise buildings or large glass should be fitted with "steel lining" to enhance wind resistance.

2. Sealing and Drainage

- Sealant:

- Use weather-resistant silicone sealant (mildew-proof, UV-resistant), apply evenly and without gaps.

- Drainage holes:

- Reserve drainage holes at the bottom of the frame to prevent rainwater accumulation and corrosion of the profiles.

3. Glass Installation Details

- Pads and Spacing:

- Elastic pads should be added to the bottom of the glass (to prevent direct contact with the profiles), leaving a 5~8mm expansion joint around.

- Fixing with pressure strips:

- Use stainless steel pressure strips to avoid aging and deformation of ordinary plastic pressure strips.

4. Safety Regulations

- High-rise restrictions:

- According to the "Regulations on the Management of Building Safety Glass", safety glass (tempered/laminated) must be used for buildings 7 stories and above.

- Oversized glass:

- Laminated glass is required if the single-piece area ≥1.5㎡ or the height from the ground <0.5m.

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III. Pitfalls to Avoid

1. Avoid cutting corners:

- Check if the glass thickness and the insulated layer meet the standards (tap with a coin to listen to the sound; insulated glass has a dull echo).

2. Beware of merchant traps:

- Clarify whether the quotation includes "transportation, installation, and auxiliary materials" (such as sealant and hardware).

3. Acceptance standards:

- The glass is free of scratches and bubbles; windows open and close smoothly; sealant is not cracked; drainage holes are unobstructed.

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IV. Special Needs Design

- Privacy protection:

Install a frosted film or electrochromic glass on the inside, or choose "insulated Venetian blind glass".

- Sunshade and heat insulation:

Choose Low-E glass or apply heat-insulating film (can block more than 60% of ultraviolet rays).

- Transparency:

Frameless glass design (requires high-strength laminated glass, high cost).

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V. Maintenance Suggestions

- Regularly check the sealant for aging;

- Avoid scratching the glass surface with sharp objects when cleaning;

- If the insulated glass fogs up, contact for replacement immediately.

The reasonable selection and standard installation of balcony glass can significantly improve living comfort and safety. It is recommended to prioritize the balance between performance and safety based on actual needs and budget.

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