Ronseal Ultimate Protection Decking Oil Ronseal Ultimate Protection Decking Oil nourishes decking while giving it a beautiful natural finish. It’s tough against changeable weather conditions and can cope with general wear and tear. It also lasts twice as long as other decking oils. Lasts twice as long as standard decking oils Rainproof in 90 minutes Protects from scuffs and scratches Restores wood oils lost through weathering Application - Brush Number of Coats Required - 2 Coverage - 6.4m2 / Litre