Polytex® XTR
Polytex® XTR is an extremely strong, four-layer roof and facade membrane. The waterproof, vapor-open membrane consists of two layers of polypropylene with a functional breathable microporous film and woven reinforcement in between for extra tear and tensile resistance. Polytex® XTR protects the structure from wind and rain while allowing moisture vapor to escape through the membrane.
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Polytex® XTR
Polytex® XTR is an extremely strong, four-layer roof and facade membrane. The waterproof, vapor-open membrane consists of two layers of polypropylene with a functional breathable microporous film and woven reinforcement in between for extra tear and tensile resistance. Polytex® XTR protects the structure from wind and rain while allowing moisture vapor to escape through the membrane.
1.50 x 50 m Article No. 8220015000
Applications
Polytex® XTR is used as a waterproof, vapor-open layer on the cold side (typically the exterior) of roof and facade constructions in new builds and renovations. Polytex® XTR can be applied directly to both rigid and soft substrates in roofs and facades.
Installation
The membrane is installed in a shingle-like pattern in the prevailing wind direction. The horizontal overlaps must be at least 100 mm for roof slopes greater than 25°, at least 150 mm for slopes between 15° and 25°, and at least 200 mm for slopes between 10° and 15°. For roof slopes below 25°, VASTR® Nail Sealing Tape must be applied, and the overlap must be bonded using the integrated adhesive strip or VASTR® non-woven tape. For vertical overlaps, a width of at least 150 mm and at most 200 mm applies, with the seam always positioned under a batten.
The membrane is fastened to the structure with stainless steel staples, after which counter battens are placed over the staples. When used with façade cladding, a pressure strip is placed over the staples on the stud.
At a corner, the membrane is folded over to the next available stud and secured with staples and, if necessary, a pressure strip.
Advantages
Extra strong
Integrated tape
Waterproof/rainproof
Breathable
Windproof
High tensile strength and elongation at break
Can be applied directly to board material and mineral wool
Specifications
Weight 200 gr / m²
Fire class E
Water tightness W1
Water vapour resistance Sd 0.025 m
Water vapour transmission 480 gr / m² / day
Tensile strength machine direction initially 500N / 50 mm
Tensile strength cross direction initially 470N / 50 mm
Elongation machine direction at break >65%.
Elongation cross direction at break 65%
Nail tear resistance machine direction initial length 500N
Nail tear resistance cross direction initially 450N
Temperature resistance -40°C / 80°C
Open construction phase 2 months
