Roof construction  >  Air- and vapour barriers  >  CaVap 2

Air- and vapour barriers


CaVap 2 is an all-round vapour barrier for all roof and wall constructions. The vapour barrier consists of a polypropylene non-woven fibre with a copolymer coating. Available with and without self-adhesive strips (SK). CaVap 2 is translucent and thus allows the rafters behind the vapour barrier to remain visible. Thanks to its high flexibility, CaVap 2 can also easily adjust to complex details.

When working with the material it is necessary to observe the applicable standards, the generally recognized rules of manufacturers as well as the CaPlast laying information. Subject to technical modifications.

Fields of application

• Vapour barrier for internal construction
• Vapour barrier for external renovations
• Ventilated and diffusion permeable roof and wall constructions.
• Unventilated and diffusion permeable roof and wall constructions.
• Timber-framed building styles
• Renovation work and new constructions


• Multi-use vapour barrier
• Good inherent stability through reinforced non-woven fibre
• Translucent (rafters are visible)
• Very high anti-tear values
• Easy and secure working
• Alkali resistant

Technical Data

Weight (g/m²)   →   90 ± 10 %
Building material   →   E
sd-value (m)   →   2 ± 0,5
Tear resistance L/T (N/5 cm)   →   120/110
Elongation L/T (%)   →   80/90
Nail tear resistance L/T (N)   →   90/90
Watertightness (kPa)   →   Resistant to 2 kPa
Roll width/Roll length (m)   →   1.50/50    |    3.00/50