Roofing Membrane/Breathable Membrane
◆Describe
Breathable Membrane functions as a weather resistant barrier, preventing rain getting into the insulation layer when use as Roof Underlayment or on timber frame wall as House-Wrap, meanwhile allowing water vapor pass to the exterior. It may also serve as an Air Barrier if it is sealed carefully at seams. Materials: High-strength PP non-woven fabric + polyolefin microporous film + high-strength PP non- woven fabric.
| Mass per unit area | TensileStrength | TearingStrength | WaterResistant | SteamResistant | UVresistant | Reaction to Fire | SD value | Elongationat Max Tensile |
| 110g/m2 1.5m*50m | Warp:180N/50mm (±20%)Weft:
120N/50mm (±20%) |
Warp:110N/50mm (±20%)Weft:
80N/50mm (±20%) |
Class W1 ≥1500(mm,2h) |
≥1500 (g/m2,24) |
120 Days |
Class E |
0.02m (-0.005,+0.015) |
>50% |
| 140g/m2 1.5m*50m | Warp:220N/50mm (±20%)Weft:
160N/50mm (±20%) |
Warp:170N/50mm (±20%)Weft:
130N/50mm (±20%) |
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| Teststandard | GB/T328.9 - 2007 | GB/T328.18- 2007 | GB/T328.10 - 2007 | GB/T1037- 1998 | EN13859-1 |
◆Application
The Breathable Roof Underlay is laid on the insulation layer of the house, which can effectively protect the insulation layer. It is spread on the building roof or external wall insulation layer, and under the water strip, so that the tide steam in the envelope can be discharged smoothly.
◆Package
Each roll with plastic bag, or according to customer’s needs.
◆Quality Control
3-layers thermal laminated, excellent waterproof ability, high water vapor permeability, stable UV resistant performance, good tensile and tearing strength for both roof & wall application.
