Where is it used?
Ampacoll BK 535 penetration sealing tape can be used internally and externally, on walls, roofs or floors.
It is used to permanently seal around rafter, purlin, duct, vent, pipe or cable penetrations through vapour control, moisture barrier or breathable membranes.
Also suitable for air tightness sealing of timber sole plates to masonry plinths/slabs in timber frame construction.