ROLLSTICK 21 is a glass-fibre reinforced SBS elastomeric bituminous waterproofing membrane, with semi-continuous strips of self-adhesive bitumen on the surface, protected by a thermofusible film, and a thermofusible film on the undersurface.
It is used as an air and water vapour control layer (AVCLl), a low permeability membrane used as part of a system to control the movement of air, water vapour and heat leakage from within the building. Can also be used as base or underlayer in a multi-layer waterproofing system and as an adhesive layer + AVCL for insulation.