Vapour permeable roofing membrane for underlay

It is waterproofing and vapour-permeable roofing membrane,which is a new kind heat insulation material,which is widely used in construction,house warp,roofing,wall and flooring underlayment. 
Two types:
1/,PP Nonwoven +low breathable PE film+PP Nonwoven. 
2/,PP Nonwoven +high breathable PE film+PP Nonwoven. 

Feature:  
1/,Excellent performace breathable membrane. 
2/,Consturcted from high tensile spun-bonded polyproplylene layers. 
3/,Highest levels of water resistance. 
4/,Full moisture vapour permeablity. 
5/,Breathable underlay for tiled and slated pitched roofs. 
6/,Eco-friendly and completely recycled. 
7/,UV-resistant.