Commercial Performance Coatings Performance Polyurethane Topcoat is a two component, non-yellowing, acrylic modified polyurethane with good weathering performance. PRODUCT DESCRIPTION It is used for the protection of steel and other surfaces exposed to a chemical environment and weathering where a cost effective, durable gloss topcoat is required. Utilising the SELEMIX® universal tinter system, Commercial Performance Coatings Performance Polyurethane Topcoat is available in a range of colours from the AS2700 and RAL Classic colour ranges as well as a range of gloss levels.