breathable roof foil

breathable roof foil water resistance/ waterproof vapour permeability Breathable membrane pitched roofing underlay

Breathable Roof foil -- breathable membrane

Pitched roofing underlayment

waterproof and breathable foil

1.Breathable membrane Characteristics

A.Excellent Performance at water resistance

B.Particular function of vapour permeability, so called Breathable membrane

C.Good performance at UV resistance

D.Tear resistance, wear resistance, good extensibility.

E.Light and thin, antiskid, with good low temperature flexibility, suitable for construction in different condition.

F.The 100% returnable polymer materials, fit the ecologist requirements.

2.Functions of Breathable membrane

A.Improve watertightness of building, prevent the construction from the invasion of wind and rain, protecting the structural materials and equipments inside roof and wall.

B.Improve the energy saving and insulation effect. Due to the unique water proof and vapour permeable performance, when forming the protection to the insulating layer, it can also effectively avoid the negative influence from the temperature difference between interior and exterior. hence, it increasing the effects of insulation and energy saving as well as providing the continuously energy saving

C. Shorten the construction period. Thanks to the good water resistant performance, interior construction and exterior can be performed at the same time so that shorten the construction period, reduce the construction cost.

D. Improve the residential environment. Because of the special breathable function, the interior vapour can natural exhaust, will effectively avoid mould and condensation, keep dry,  permeate and comfortable indoor, improve the residential environment.

3. Application of Breathable membrane

Mainly used as underlay for pitched roof and enclosure protection for insulating layer of walls.

A. Roofing application

B. Wall application

Characteristics	Unit	Test method	MF140
Length	m	EN1848	50
Width	m	EN1848	1.5(-0.5%;+1.5%)
Mass per unit area	g/m2	EN1849	140g(± 10%)
Resistance to water penetration	----	EN1928-2000	W1
Water vapour transmission	g/m2/24h	EN1931	2250
Tensile strength MD/ CD	N/50mm	EN12311-1	200±10% / 150±10%
Resistance to tearing MD/CD	N	EN12310-1	100±10% / 90±10%
UV resistance	Month(s)	EN1296, EN1297, EN13859-1	3
Reaction to fire	----	EN13501-1:2002,EN11925-2	E
Properties alternation after artificial aging
Tensile strength MD/CD	%	EN13859-1  EN12311-1	-30%/-30%
Resistance to water penetration	----	EN13859-1  EN1928-2000	W1

breathable roof foil