Toupret Anti-damp Render controls damp on interior and exterior surfaces while letting them breathe due to its water-vapour permeability. On exteriors it blocks water penetration, on interiors it acts as a water barrier while letting the substrate breathe. Ideal for cellars and basements. Using a brush or trowel, it can be applied to damp and raw masonry substrates. Overcoat with any type of Toupret filler, paint or wall coating. Specifications: Working Time: 3-4 Hours.Ready to Paint Time: 12-24 Hours.Colour when Dry: White.Size: 6kg Bag.