Specifications

Breathable Pitched Roofing Underlay Membrane
has good water resistance & vapor breathability, can let building breathe freely.

 

  

Breathable Pitched Roofing Underlay Membrane Roofing Waterproof Membrane Breathable Membran

 

Nelumbo  breathable membrane, which has good water resistance and vapor breathability, e.g., prevents moisture from entering the buildings, while permits water vapor exit the building. And the breathable membrane can thus improve building durability by protecting wall sheathing and framing from moisture.

 

How does Nelumbo  Breathable Pitched Roofing Underlay Membrane Roofing Waterproof Membrane Breathable Membrane works?

 

Nelumbo breathable membrane is made by two layers of non-woven fabrics and one layer of microporous polymeric membrane in the middle.   

 

1. It has superior air resistance that helps to protect insulation from drafts, reducing energy costs. 

 

2. It provides water resistance that  helps to prevent water from entering walls, avoiding costly damage.

 

3. It allows moisture vapor to escape while protecting against air and bulk water instrusion.

 

4. It has excellent tear strength and allows 120days of UV exposure. 

Breathable Pitched Roofing Underlay Membrane Roofing Waterproof Membrane Breathable Membrane data:

 

Roll size: 1.5m*50m

Material:  3 layers- 2 layers Eco-friendly PP non-woven fabric + 1 layer PE film

Packing:  2rolls/ctn

 

Technical data of  Breathable Pitched Roofing Underlay Membrane Roofing Waterproof Membrane Breathable Membrane chart below:

 

Item		Specific
Weight (g/m2)		100	130	170
Water Vapour Transmission (g/m2.24h)		2500-3500	2500-3500	2500-3500
Resistance to Water Penetration (mm)		1500-3000	1500-3000	1500-3000
Tensile Strength (N/50mm)	CD	>140	>150	>170
	MD	>160	>170	>200
Low Temperature Flexibility (°C)		-40°C	-40°C	-40°C
UV Exposure (Months)		4	4	4

 

3 layers of  Breathable Pitched Roofing Underlay Membrane Roofing Waterproof Membrane Breathable Membrane below:

 

 

  Breathable Pitched Roofing Underlay Membrane Roofing Waterproof Membrane Breathable Membrane It provides water resistance, but allows moisture vapor to pass through.