breathable foil / breathable membrane / roof underlay waterproof / water resisitant / wapor permeable / high permeability

waterproof breathable roof felt / water resistant / vapour permeable/ slopping roof tile underlay / breathable housewrap felt

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 membranes 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, andto 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

1, Standard : EN13859-1 (CE mark optional)2, Weight: 80g, 90g, 100g, 115g, 120g, 135g, 140g, 160g, 180g/m2.3, water resistance: calss W1 (water column ≥1500mm)4, breathability: ≥2250g/m2/24h (SD-value 0.02m)5, UV resistance: ≥3 months 6, Roll width: 1.5m 7, Roll length: 50m 8, Packing: each roll with PE bag or PVC shrink wrap film.9, Loading: with pallets packing or bulk loading. 

Key Features of Breathable Membrane:

CE certificated, high quality with competitive priceWaterproof & vapor permeableHigh breathability3-layer laminate (PP+PE+PP)Anti-UV stable; anti-aging stableExcellent tensile and nail tear strength Good flexibility and ductilityLight weight and thin, slip-resistant surfaceSimple handling and easy to useEnergy savingLong term durabilityUse as roofing underlayment or housewrap

Technical data	Testing Standard	Unit	Specifications
			M90	M100	M120	M140	MF140	MF160
Weight per unit area	EN1849	G/M2	90±10%	100±10%	120±10%	140±10%	140±10%	160±10%
Width	EN1848	M	1.5	1.5	1.5	1.5	1.5	1.5
Resistance to Water penetration	EN1928-2000		W1	W1	W1	W1	W1	W1
Water vapour transmission	EN1931	G/M2.24h	2250	2250	2250	2250	2250	2250
Tensile strength(CD)	EN12311-1	N/50MM	75±15%	100±15%	120±15%	150±15%	150±15%	170±15%
Tensile strength(MD)	EN12311-1	N/50MM	115±15%	150±15%	180±15%	200±15%	200±15%	230±15%
Nail tearing strength(CD)	EN12310-1	N	45±15%	60±15%	80±15%	90±15%	80±15%	90±15%
Nail tearing strength(MD)	EN12310-1	N	55±15%	70±15%	90±15%	100±15%	90±15%	100±15%
Reaction to fire	EN13501-1:2002 EN11925-2						E	E
UV resistance	EN13859-1	Month	3	3	3	3	3	3
Properties alternation after artificial aging
Tensile strength MD/CD	En13859-1	%	-30%/-30%	-30%/-30%	-30%/-30%	-30%/-30%	-30%/-30%	-30%/-30%
penetration	EN13859-1		W1	W1	W1	W1	W1	W1

  

 

breathable foil / breathable membrane / roof underlay