Vapour check membrane for external insulation

connect variant with self-adhesive zones


  • Protects building structures against weathering during the construction phase for roof pitches of 10° (2.1:12) and higher
  • Water-resistant and waterproof, can be walked on
  • Acts as a vapour check and airtight layer simultaneously
  • Excellent values in hazardous substance testing, has been tested according to the ISO 16000 evaluation scheme

Areas of application

For use as a vapour check and airtight membrane on roof decking underneath suitable external roof insulation made of all insulation materials on structures that are open to diffusion on the exterior (roofing underlay with SOLITEX MENTO 3000, for example).

Installation instructions

General conditions

pro clima DA is to be installed with the printed side facing the installation technician. The membrane is to be installed horizontally (parallel to the eave) in a taut manner. The weight of the insulation material must be supported by the decking.

Airtight seals can only be achieved on vapour-check membranes that have been fitted with no folds or creases. Ventilate regularly and systematically to prevent build-up of excessive humidity (e.g. during the construction phase). Occasional, intermittent ventilation is not sufficient to remove large quantities of moisture due to construction work from a building; use a dryer if necessary.

To avoid condensation formation, the thermal insulation should be installed immediately after the airtight installation of DA. This applies particularly to work carried out in winter.


  • Overlap the membranes by at least 10 cm (3/8").
  • Use fastening staples that are at least 10 mm (3/8") wide by 8 mm (5/16") long to attach the membranes. The membranes can only be fastened in a protected manner in the overlap area. The maximum distance between fasteners is 10 to 15 cm (4" to 6").