Designed specifically for adhesion to expanded polystyrene foam, we were really impressed with both its adhesion, and finished coating effect. We tested it on our expanded polystyrene balls (page 95). Tests showed a good clear coat was achieved when applied with a reinforced surfacing tissue, and alone. The resin didn't melt the polystyrene at all, and gave a really good clarity. Perfect for sealing and gluing larger scale projects, or where durability is key. Catalyst should be added at 1-2 % subject to conditions and requirements. 

Formerly known as R999 but has the same formulation.