Intergrain DWD Heavy Duty 4LA high build, water based exterior timber finish. Intergrain Heavy Duty (previously known as Intergrain DWD) is exceptionally durable, long lasting and hard wearing designed to protect timber with a tough, UV, water and mould resistant finish for harsh weather conditions. Areas Decking, Fences,Exterior timber,Timber Furniture Substrates Jarrah, Merbau, Spotted Gum Sheen Satin Coverage Up to 10m2 per litre Recoat 4 Hours Full cure 7 days Cleanup Water