The Liberon Superior Decking Stain is a versatile, high performance product which keeps your decking looking great. Its Biosourced formula, based on vegetable oils and modified bio-based resins, reduces environmental impact. Whilst delivering reinforced protection and an outstanding finish. Water and UV resistant along with an anti-slip finish. Preparation: Ensure the surface is clean, dry and free from previous finishes and dust. Lightly sand new wood and clean old wood.