Aqualac^� BP341 Two Pack Polyurethane Primer

A general purpose, fast drying waterbased primer for GRP, Noryl and Polyurethane rigid foam. It is formulated with solvents that will not attack these plastics but this primer should not be used on polystyrene and similarly sensitive plastics.
The primer effectively masks surface imperfections and when hard dry exhibits very good flatting characteristics.