Extoseal Encors is a highly elastic butyl rubber airtight and watertight flashing tape. It is most commonly used as a weatherproof and watertight tape for sealing around window sills, door thresholds or any area where standing water may be present. The high elasticity of Extoseal Encors allows it to be easily moulded around corners and junctions while maintaining the same level of watertightness and weatherproofing.
Extoseal Encors sealing tape will stick to all Pro Clima membranes, tapes and airtight accessories. It will also bond to planed wood, painted wood, hard plastics, metal, hard wood-based panels (e.g. chipboard, OSB, plywood, MDF), wood fibre insulation panels, concrete and all types of plaster & un-plastered masonry. Wood fibre boards must be primed with Tescon Primer RP or Sprimer before applying.
All surfaces must be sufficiently dry, clean and free of water-repelling substances like grease and silicone. Concrete and plaster surfaces must be sound, not sandy, crumbling or loose.
Extoseal Encors protects building elements from weather and water ingress by providing permanent yet flexible airtight and watertight seals at window and door junctions.
Pro Clima Extoseal Encors is extremely flexible and can stick to anything commonly found on site. It can be pulled, stretched and moulded to follow irregular shapes, corners and edges of building elements to attain the best possible weatherproof seal. The flexibility is due to its strong butyl layer and highly stretchable carrier film over the top, the flexibility and stretching does not affect its water and airtight qualities.
It is supplied with two release strips, so it is easier to apply it precisely where needed. The narrow strip is stuck down first then the other side of the tape can be pulled or stretched to where it is needed before removing the remaining strip.
The butyl rubber adhesive of Extoseal Encors penetrates deep into the surface on which it is being adhered to. Once it has been stretched from its original form, the restoring forces are extremely low. This means the possibility of shrinking (retraction) to cause air or moisture leaks is greatly reduced.
