Arborcoat® exterior waterproofer is a water-based sealer that provides excellent protection from moisture and sun damage on exterior wood decking, siding, fencing, shingles and furniture. Arborcoat® exterior waterproofer is a penetrating, non-yellowing coating with silicone that fills the pores of wood surfaces and trans-oxide pigments that protect against UV damage. Arborcoat® exterior waterproofer may be used on properly prepared new or reconditioned wood surfaces. Ideal for protecting all types of wood from water and sun damage, as well as stains from grease, oil, dirt and mildew.