Abstract: A time and labour saving multiple coating system for porous substrates which involves the application of a mono or poly isocyanate catalysed UV curable acrylate composition in such circumstances as to penetrate at least part of the surface of the substrate, at least a partial surface curing of the applied composition prior to any substantial degree of self curing, and thereafter applying (whether subsequent to any sanding or not) a further surfacing composition which preferably also is an acrylate composition that is both self curing and UV curable.

Abstract: A time and labour saving multiple coating system for porous substrates which involves the application of a mono or poly isocyanate catalysed UV curable acrylate composition in such circumstances as to penetrate at least part of the surface of the substrate, at least a partial surface curing of the applied composition prior to any substantial degree of self curing, and thereafter applying (whether subsequent to any sanding or not) a further surfacing composition which preferably also is an acrylate composition that is both self curing and UV curable.