Cold insulation side
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Breathable membranes

Polytex Pro

Polytex® Pro is a water-repellent and extremely breathable 2-layer non-woven membrane, which is made of HDPE and polypropylene and is based on Tyvek® DuPont technology.

1,50 x 50 m Article no. 4414515000
3,00 x 50 m Article no. 4414530000
1,50 x 50 m Article no. 4414515010

Description

Polytex® Pro is a water-repellent and extremely breathable 2-layer non-woven membrane, which is made of HDPE and polypropylene and is based on Tyvek® DuPont technology. The membrane is flexible, not easily torn by nails and is easy to place. The functional Tyvek® layer means Polytex® Pro is highly resistant to different temperatures. The Polytex® Pro Plus features an integrated adhesive strip, which means Tyvek® tape is not needed for the overlaps.

Applications

Polytex® Pro is used as a watertight and extremely breathable layer on the cold side of facade and roof constructions. This membrane is completely watertight and can thus also be applied directly to hard surfaces (like roof boarding). Polytex® Pro is used during new-build projects as well as renovation activities.

Processing

Polytex® Pro should be placed in the same way as roof tiles, whereby the horizontal overlap must be at least 150 mm. Use Tyvek® tape to tape over staples and overlaps. Polytex® Pro is attached to constructions with stainless steel staples, and battens are then placed over the staples. VAST-R® Nail-proof tape must be placed under the battens to make sure that the holes produced by screws have a watertight finish. Always apply Polytex® Pro as such that 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

Watertight

Extremely breathable

Very high tensile strength

Extremely temperature-resistant

Wind-proof

Suitable for gently sloping roofs (15°)

Suitable under solar panels

Open application time 4 months

Can be applied directly against hard and soft surfaces

Specifications

Weight 145 gr /m²

Fire class E

Water tightness W1

Water vapour resistance Sd 0,02 m

Water vapour transmission 960 g / m² / day

Tensile strength machine direction 290N / 50 mm

Tensile strength cross direction 235N / 50 mm

Elongation machine direction 13%

Elongation cross direction 21%

Tear resistance machine direction 180N

Tear resistance cross direction 205N

Temperature resistance -40°C / 100°C

Construction phase 4 months

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