Catalyst is included. We have over 80 colours of this high-quality non-slip flowcoat in stock. Ideal for non slip walkways on Boat decks etc. Crystic Topcoat 49pa Excel is a pre-accelerated, Isophthalic topcoat containing polymeric granules to produce a textured non-slip surface when cured. It has been designed to be post applied to a GRP laminate by brush application. Technical Data Sheet. Safety Data Sheet. These products all come with FREE catalyst as standard. Please Note: Please do not use website colour images for colour-matching, as colours can vary widely on different monitors. As these products are colour mixed to order we cannot accept any returns.