waterproof breathable housewrap felt / water resistant / vapour permeable / breathable housewrap felt / weather barrier
Breathable Membrane is a water-resistant material which will allow water vapour to pass through when there is a difference in humidity on opposite sides of it.
Breathable Membrane are used on the outside of frame walls under the exterior finish material. They have three functions to perform:
- to shed moisture and restrict any rain water which penetrates past the exterior finish from reaching the wood wall,
- to perform as a breather material allowing any moisture within the wall cavity to escape by diffusion through the membrane to the exterior, and
- to act as a wind barrier to restrict movement of air through the wall.
To qualify for the above functions the breather membrane must have good "water resistance", good "water vapour permeability", and good "air barrier properties".
Breathabe membrane Specification
- Weight: 80, 90, 100, 115, 120, 135, 140, 160 , 180 and so on.
- Width: 1.5m
- Length: 50m or jumbo roll
Key Features of Breathable membrane:
- CE certificated, high quality with competitive price
- Waterproof ability (class W1 pass)
- High breathability (>2250g/m2/24h)
- 3-layer laminate (PP+PE+PP)
- UV stable (>90days)
- Excellent tensile and nail tear strength
- Good flexibility and ductility
- Light weight and thin, slip-resistant surface
- Simple handling and easy to use
- Long term durability
- Use as roofing underlayment or housewrap
Technical data | Testing Standard | Unit | Specifications | ||||
M90 | M100 | M120 | M140 | MF160 | |||
Weight per unit area | EN1849 | g/m2 | 90±10% | 100±10% | 120±10% | 140±10% | 160±10% |
Width | EN1848 | m | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
water resistant | EN1928 | W1 | W1 | W1 | W1 | W1 | |
Water vapour transmission | EN1931 | g/m2.24h | 2250 | 2250 | 2250 | 2250 | 2250 |
Tensile strength (CD) | EN12311-1 | N/50mm | 75±15% | 100±15% | 120±15% | 150±15% | 170±15% |
Tensile strength (MD) | EN12311-1 | N/50mm | 115±15% | 150±15% | 180±15% | 200±15% | 230±15% |
Nail tearing strength(CD) | EN12310-1 | N | 45±15% | 60±15% | 80±15% | 90±15% | 90±15% |
Nail tearing strength(MD) | EN12310-1 | N | 55±15% | 70±15% | 90±15% | 100±15% | 100±15% |
Reaction to fire | EN13501-1 EN11925-2 | E | |||||
UV resistance | EN13859-1 | Month | 3 | 3 | 3 | 3 | 3 |
Properties alternation after artificial aging | |||||||
Tensile strength MD/CD | En13859-1 | % | -30% | -30% | -30% | -30% | -30% |
penetration | EN13859-1 | W1 | W1 | W1 | W1 | W1 | |
