ODM Factory Self Adhesive Shield Breathable Vapor Barrier Roof Underlayment Homewrap Wall Wrap

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Product Description

Basic Specifications

Model NO.
xiashi480
Thickness
0.3mm
Type
Waterproof Roll Material
Ceiling Tile Shape
Roll
Function
Waterproof
Usage
Outdoor, Indoor
Material
PE+PP
Color
Custom Color
Production Capacity
10,000,000/Year

Packaging & Delivery

Package Size
90.00cm * 150.00cm * 40.00cm
Gross Weight
90.000kg
Lead Time
7 days (1 - 133 Rolls)

Product Description

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Product Introduction: This waterproof breathable membrane is designed as a protective layer for building insulation. It strengthens air and water tightness while allowing vapor to discharge quickly. This ensures energy efficiency, improves building durability, and maintains indoor air quality by keeping external walls and roofs dry.

🌬️ 1. High Air Tightness

Laid on the surface of the insulation layer, it covers the whole building. Its unique non-confined pores and wind resistance reduce air leakage and heat loss, significantly protecting the insulation layer. Studies show that buildings using this membrane can save up to 40% in heating and cooling energy costs.

💧 2. High Water Tightness

Offers superior resistance against water vapor and rain. It improves the durability of the building structure and ensures thermal insulation efficiency. Test results indicate its heat preservation effect is remarkable, equivalent to twice the thermal resistance of an air layer of the same thickness.

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☁️ 3. Persistent Vapor Permeability

With vapor permeability above 1000g/m²·day, it effectively discharges internal water vapor to reach a natural dry state. This prevents mold breeding, protects the insulation layer, and solves dampness issues, making the living environment more comfortable.

💰 4. Reduction of Engineering Cost

By protecting the thermal insulation layer directly and effectively, it eliminates the need for additional protective layers or steam exhaust measures, significantly reducing overall project costs.

Working Principle

The membrane operates on the principle of micro-porous vapor permeation. While water droplets are approximately 20 microns in diameter, water vapor molecules are only about 0.0004 microns. The vapor can pass through the micro-holes via diffusion, while liquid water is blocked by surface tension.

Test Item / Unit HD-K100 HD-K120 HD-K140 HD-KZ160 Test Method
Water Vapor (g/m².24h) 1000-2500 1000-2500 1000-2500 1000-2500 GB/T 17146-1997
Water Tightness (mm) 1500-3000 1500-3000 1500-3000 1500-3000 GB/T 328.10-2007
Breaking Strength (N/50mm) ≥100 ≥120 ≥180 ≥260 GB/T 328.9-2007
Breaking Elongation (%) ≥40 ≥40 ≥70 ≥70 GB/T 328.9-2007
Feature Specification Test Method
Inflaming Retarding B2 GB/T 8626-2007
UV Resistant (Month) 4 Months Standard Test

Frequently Asked Questions

What is the primary purpose of this membrane?
It is used to protect building insulation by providing a waterproof and windproof barrier while allowing internal moisture vapor to escape.
How does it help in saving energy?
By improving the air tightness of the building envelope, it reduces heat loss and air leakage, which can lower HVAC energy consumption by up to 40%.
Is the material resistant to low temperatures?
Yes, the membrane maintains its flexibility and performance at temperatures as low as -40ºC.
How long can the membrane be exposed to UV light?
The product is UV resistant for approximately 4 months during the construction phase.
What is the vapor permeability of this product?
It features a high vapor permeability rate of 1000-2500 g/m² per 24 hours, ensuring the structure stays dry.
Can it be used for both roofs and walls?
Yes, it is suitable for both external wall and roof applications in various building types.

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