Reinforced hydrosafe® high-performance vapour check, suitable for all fibrous insulation materials

Advantages

  • Best possible protection against moisture damage to structures and mould because this product is humidity-variable with a variation of a factor of over 100
  • Can be combined with all fibrous insulation materials (including blown-in insulation)
  • Permanent protection: performance tested and certified by independent testing authority (ETA-18/1146)
  • Protected winter building sites thanks to hydrosafe® behaviour
  • Test winner in April 2012 with the German product-testing foundation ‘Stiftung Warentest’
  • Easy to work with: dimensionally stable, no splitting or tear propagation
  • Excellent values in hazardous substance testing, has been tested according to the ISO 16000 evaluation scheme

Areas of application

Vapour check (alternate terms: vapour control or retarder) membrane for use on roofs, walls, ceilings and floors on structures that are open or closed to diffusion on the exterior, e.g. flat/pitched roofs and green roofs, after appropriate design calculations have been carried out.

Technical specs

  Material
Fleece Polypropylene
Functional film Polyethylene copolymer
Reinforcement Polypropylene non-woven fabric
Property Value Regulation
Colour White-translucent
Surface weight 110 g/m² ; 0.36 oz/ft² EN 1849-2
Thickness 0.4 mm ; 16 mils EN 1849-2
Water vapour resistance factor µ 35 000 EN 1931
sd value 14 m EN 1931
sd value, humidity-variable 0.25 - >25 m EN ISO 12572
g value 70 MN·s/g
g value, humidity-variable 1.25 - >125 MN·s/g EN ISO 12572
Vapour permeance 0.23 perms ASTM E96-A
Vapour permeance, humidity-variable < 0.13 - 13 perms EN ISO 12572
Hydrosafe value (sd) 2 m DIN 68800-2
Surface burning characteristics Class A (Flame Spread 0; Smoke development index 35) ASTM E84
Fire class E EN 13501-1
Airtightness ≤ 0.004 cfm/ft² ASTM E2178
Airtightness Tested EN 12114
Tensile strength MD/CD 340 N/5 cm / 220 N/5 cm ; 39 lb/in / 25 lb/in EN 13859-1 (A)
Elongation MD/CD 15% / 15% EN 13859-1 (A)
Nail tear resistance MD/CD 200 N / 200 N ; 45 lb / 45 lb EN 13859-1 (B)
Durability after artificial ageing Passed ETA-18/1146
Temperature resistance Permanent -40 °C to 80 °C ; -40 °F to 176 °F
Thermal conductivity 0.04 W/(m·K) ; 0.3 BTU·in/(h·ft²·°F)
CE labelling Yes ETA-18/1146


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