Airtightness membrane for roof refurbishment from the outside, with self-adhesive strips

Advantages

  • Simple implementation of the airtightness layer: installation across rafters and insulation
  • Dry and reliably protected building components thanks to active moisture transport
  • Protection during the construction phase: suitable as a temporary covering
  • Quick and reliable adhesion thanks to the integrated ‘connect’ self-adhesive strips along the membrane strips
  • Excellent values in hazardous substance testing, has been tested according to the ISO 16000 evaluation scheme

Areas of application

For use as an airtightness membrane that can be subjected to outdoor exposure for roof refurbishment from the outside in the case of full packing of the existing spaces between the rafters with insulation. Installation across the rafters, underneath an additional layer of over-rafter insulation consisting of wood-fibre underlay panels. Please contact Technical Support at pro clima in Germany for assistance with calculating the thickness of the external wood-fibre insulation that is required from a building physics viewpoint.

Technical specs

  Material
Protective and covering fleece Polypropylene microfibre
Functional film Monolithic polymer mixture
Self-adhesive strips Water-resistant SOLID adhesive
Property Value Regulation
Colour Light blue
Surface weight 145 g/m² ; 0.48 oz/ft² EN 1849-2
Thickness 0.50 mm ; 20 mils EN 1849-2
Water vapour resistance factor µ 20 EN ISO 12572
sd value, humidity-variable 0.01 m EN ISO 12572
g value, humidity-variable 0.05 MN·s/g
Vapour permeance, humidity-variable 330 perms EN ISO 12572
Fire class E EN 13501-1
Outdoor exposure, pitched roofs ≥14°(3:12) 3 months
Outdoor exposure for refurbishment betw. 2 insulation layers 14 days ; 7 days at ≤10 °C (≤50 °F)
Watertight joints with ‘connect’ adhesive strips or TESCON VANA tape W1 EN 13859-1
Sarking/roofing underlay membrane (Germany) USB / UDB ZVDH-Produktdatenblatt 2024
Suitable as temporary roof covering (Germany) Yes ZVDH
Watertightness to liquid water W1 EN 1928
Water column > 2 500 mm ; 8' 2" EN ISO 811
Airtightness Tested EN 12114
Tensile strength MD/CD 270 N/5 cm / 200 N/5 cm ; 31 lb/in / 23 lb/in EN 12311-2
Elongation MD/CD 55% / 70% EN 12311-2
Nail tear resistance MD/CD 150 N / 150 N EN 12310-1
Durability after artificial ageing Passed EN 1297 / EN 1296
Temperature resistance Permanent -40 °C to 100 °C ; -40 °F to 212 °F EN 1109, EN 1296, EN 1297
Thermal conductivity 0.04 W/(m·K) ; 0.3 BTU·in/(h·ft²·°F)
CE labelling Yes EN 13984 / EN 13859-1