Product Description
1. Introduction of CNBM Breathable waterproof membrane / underlayment / house wrap
CNBM Breathable Waterproof Membrane is also known as roofing underlayment or housewrap, which is a polymeric composite waterproofing material. It is produced with PP non-woven fabric + PE fuctional film + PP non-woven fabric. The PP fabric works as protection and reinforcement, while the micro-porous PE film is the functional layer which is water-resistant but allow water vapour to pass through.
CNBM Breathable Waterproof Membrane is widely used in roofing or wall system, outside the insulation layer. It is water resistant, which prevents the outside water get inside, while allows the inside vapor or humidity/moisture permeates to the exterior. This can keeps the insulation system dry and prevent damages to the roof/wall system or inside facilities from condensed water dew. By using CNBM breathable waterproof membrane, the insulation system can be perfectly protected and sustainable energy saving achieved.
2. Technical Data of CNBM Breathable waterproof membrane / underlayment / house wrap
Area Weight: 80-150G/M2.
Roll Size: 1.5m X 50m
Water Resistant: Class W1
Vapor Permeability: >1000G/M2/24h
UV resistant: >3 month
Cryogenic flexibility: -30ºC without crack
3. Application of CNBM Breathable waterproof membrane / underlayment / house wrap
CNBM Breathable Waterproof Membrane is widely used in roofing or wall system, outside the insulation layer. It can be used for wooden structure, steel structure, curtain wall structure, concrete or cladding system.
4. Introduction of CNBM
China National Building Material Group Co., Ltd (CNBM Group) is the largest state-owned comprehensive building materials industry group company in China. It was founded in 1984 upon the approval of China State Council, with products as various kinds of building materials, decoration materials, furniture, equipments, etc. It has been ranked as one of the World Top 500 Enterprises for 6 successive years and No. 2 in world building materials industry.
Up until the end of 2016, CNBM owns total assets of over 550 billion RMB, with employees of over 250,000, annual turnover of 300 billion RMB. Among all CNBM subordinate companies, 15 of them are listed. CNBM owns 26 national research institutes, with 38000 scientists, 33 national industry inspection center, over 8000 patents, 11 national research & technical center, and 18 standard draft committee.
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