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Breathable membranes

Polytex

Polytex® is a water-repellent breathable membrane, which consists of two layers of polypropylene with a functional micro-porous membrane in between.

1,50 x 25 m Article no. 8212515026
1,50 x 50 m Article no. 8212515000
3,00 x 50 m Article no. 8212530010

Description

Polytex® is a water-repellent breathable membrane, which consists of two layers of polypropylene with a functional micro-porous membrane in between. Polytex® protects constructions against wind and rain, while allowing any moisture to escape through the Polytex®. Polytex® is KOMO-certified.

Applications

Polytex® is applied as a water-repellent and breathable layer on the cold side of roof and facade constructions in new-build and renovation projects. Polytex® can be applied to both soft and hard surfaces in roofs and facades.

Processing

Polytex® should be placed in the same way as roof tiles, whereby the horizontal overlap must be at least 150 mm. Use VAST-R® Non-woven tape to tape over staples and overlaps. Polytex® is fixed to constructions using stainless steel staples, and (counter) battens are then placed over the staples. VAST-R® Nail-proof tape must be placed under the (counter) battens to make sure that the holes produced by screws have a watertight finish. Always apply Polytex® so the printed side faces outwards. When used together with facade panels, battens must cover the staples on jamb sections. When working around corners, the membrane must be continued to the next jamb section, where it can be fixed in place using staples and possibly a batten. VAST-R® Butyl tape must be placed under the battens to create an effective water barrier, and to extend the lifespan.

Benefits

Water-repellent/rain-proof

Breathable

Wind-proof

High tensile strength and flexibility against tears

KOMO-certified

Can be placed directly on sheet materials and mineral wool

100% recyclable

Roofs and facades

Specifications

Weight 130 gr / m²

Fire class E

Water tightness W1

Water vapour resistance Sd 0,03 m

Water vapour transmission 480 gr / m² / day

Tensile strength machine direction 300N / 50 mm

Tensile strength cross direction 200N / 50 mm

Elongation machine direction 70%

Elongation cross direction 70%

Tear resistance machine direction 160N

Tear resistance cross direction 190N

Temperature resistance -40°C / 80°C

Construction phase 2 months

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