Reinforced all-round hydrosafe® high-performance vapour check

Advantages

  • Excellent protection against mould and moisture damage to structures thanks to humidity-variable diffusion resistance
  • Can be combined with all fibrous insulation materials
  • Easier handling: can be used with insulation installed between rafters or wall framework and with external insulation
  • Protects building structure against weathering during the construction phase for roof pitches of 10° (2.1:12) and higher
  • Protected winter building sites thanks to hydrosafe® behaviour
  • Excellent values in hazardous substance testing, has been tested according to the ISO 16000 evaluation scheme

Areas of application

For use on the inside of insulation installed between rafters or wall framework, or over a hard subsurface for use underneath external insulation in combination with all fibrous insulation materials – including blown-in insulation materials. This membrane can be permanently exposed to diffuse UV light – e.g. in unconverted spaces without inner cladding. It can be used on building components that are diffusion-open to the outside or are diffusion-tight, e.g. pitched, flat or green roofs, after appropriate design calculations have been carried out.

Technical specs

  Material
Protective and covering fleece Polypropylene
Membrane Polyethylene copolymer
Reinforcement Polypropylene non-woven fabric
Property Value Regulation
Colour light grey
Surface weight 170 g/m² ; 0.56 oz/ft² EN 1849-2
Thickness 0.6 mm ; 24 mils EN 1849-2
Water vapour resistance factor µ 23 300 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
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 105) ASTM E84
Fire rating E EN 13501-1
Outdoor exposure 2 months
UV resistance can be permanently exposed to diffuse UV light
Water column > 2 500 mm ; > 8' 2" EN ISO 811
Watertightness to liquid water W1 EN 1928
Tensile strength MD/CD 490 N/5 cm / 300 N/5 cm ; 56 lb/in / 34 lb/in EN 12311-2
Elongation MD/CD 20 % / 20 % EN 12311-2
Nail tear resistance MD/CD 280 N / 280 N ; 63 lbf / 63 lbf EN 12310-1
Durability after artificial ageing passed EN 1296
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 EN 13984