Ultra Topcoat, a fast drying high gloss acrylic topcoat, which can be applied over Pilot QD or most sound existing painted metal, concrete or wood surfaces. Applied by spray it is suitable for most external applications with very good water resistance and colour retention. t may be used as a topcoat in marine applications above the water line. It may be used as a topcoat in marine applications above the water line. It is available in a broad range of colours, made to order in a minimum quantity of 5 litres, for delivery next working day. For strong colours use Pioner Topcoat.