Moisture adhesive sealing tape



  • Protects structural elements from water ingress: watertight and blocks rising damp
  • Creates a secure bond: butyl rubber penetrates deep into the substrate
  • Very elastic carrier foil with particularly low restoring forces: it can be flexibly adapted to surfaces and corners
  • Bonds to mineral substrates
  • Airtight bonds according to DIN 4108-7, SIA 180 and OENORM B 8110-2
  • Lowest VOC rating in hazardous substance test


Moisturetight barrier tape to seal under sills in timber structures, for joining wood-based panels to smooth mineral surfaces, to stick sub-roof panels one below the other (e.g. in grooves and transitions) and to bond these to adjoining structural elements.

Backing elastic PE carrier film
Material Butyl rubber
Release film silicone-coated PE film
Attribute Value Norm
Colour Butyl rubber: grey, film: green
Surface weight approx. 1.9 kg/m² EN 1849-2
Thickness approx. 1.0 mm EN 1849-2
sd-value > 100 m EN 1931
g-value > 500 MN·s/g
Vapor permeance < 0.03 US perms ASTM E 96
Exposure time 3 months
Application temperature +5 °C to +35 °C ; 41 °F 95 °F; frost-free nights
Temperature resistance permanent -20 °C to 80 °C ; -4 °F to 176 °F
Storage cool and dry

Before sticking, subsurfaces should be brushed off, wiped clean with a cloth or cleaned using compressed air.
Adhesion to frozen surfaces is not possible. There must be no water-repellent substances (e.g. grease or silicone) on materials to be bonded. Subsurfaces must be sufficiently dry and have sufficient load-bearing capacity.

Permanent adhesion is achieved on woodbased panels (chipboard, OSB and veneer plywood, MDF board and wood fibre sub-roof panels).
Wood fibre sub-roof panels and smooth mineral subsurfaces require pre-treatment with TESCON PRIMER before bonding. Concrete or plaster subsurfaces must not be sandy or crumbling.

The best results in terms of structural stability are achieved on high-quality subsurfaces.
It is your responsibility to check the suitability of the subsurface; adhesion tests are recommended in certain cases.
Pretreatment with TESCON PRIMER is recommended in the case of subsurfaces with insufficient load-bearing capacity.

General conditions

The bonds should not be subjected to tensile strain.
Press firmly to secure the adhesive tape. Ensure there is sufficient back pressure.
Windproof, airtight or rainproof seals can only be achieved on vapour retarding membranes, roof lining membranes or façade membranes that have been laid without folds or creases.
To work with the tape, temperatures must be >5 °C during the day and night. If the initial bond is not satisfactory, a solvent (e.g. white spirits) may be applied to the grey butyl rubber side of the tape. The solvent increases the adhesiveness of the butyl rubber at low temperatures.
The tape is self-bonding under the effect of heat.