ULTIPRO UNDERLAY Diffusion-open and strong, Ultipro is puncture-proof. The underlay has two adhesive edges that immediately provide a sealed and secure overlap. Ultipro underlay allows vapour to escape from the inside, whilst at the same time sealing against moisture from the outside. The product can be laid free-hanging on roof trusses or directly onto rough panel. The double adhesive edges ensure a simple and rapid installation. Properties Length Width Weight Unit (in brackets) m m g/m2 Value 50 1,50 210 Typical characteristics Values Fire resistance (Class) E Watertightness (Class) W1 Water vapour resistance (sd) (m) 0,03 (+0,02, -0,015) Tensile strength Longitudinal Latitudinal 490 ± 90 460 (-100, +110) Elongation at break (%) Longitudinal Latitudinal 45 (-20, +30) 70 (-45, +50) Tear strength (N) Longitudinal Latitudinal 500 (-100, +80) 450 (-70, +70) Flexibility at low temp. (°C) -40 Durability - Watertightness (Class) W1 - Tensile strength, long. (N/50 mm) 460 (-90, +100) - Tensile strength, lat. (N/50 mm) 430 (-100, +100) - Elongation at break (%) Hazardous substances None 4 ULTIPRO UNDERLAY AND WIND BARRIER - VERSION 3 - VALIDITY FROM 01.06.2020 REPLACES PREVIOUS EDITIONS
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