Promotes the adhesion of CEMFLOW cementitious flooring products to smooth non-absorbent surfaces such as steel, epoxy and polyester floors. It can be used as a general purpose primer for dusty or absorbent surfaces to promote adhesion and to prevent unacceptably rapid drying of adhesive and smoothing underlayments. Non-flammable, suitable for use over normal underfloor heating installations and is coloured green to provide the user with visual control of coverage uniformity.