Rust-Oleum Guardian Wall Paint is an innovative, mould-resistant* wall paint designed for humid and poorly ventilated interiors such as kitchens, bathrooms, garages, utilities and other high-moisture areas. Ultra-durable and easy-to-apply, the specialist formula is specifically designed to protect against fungal degradation.Ensure that your surface is clean, dry, sound and free from any contamination such as dirt, oil, wax, mould and mildew before painting. Treat any existing mould with a proprietary mould killer and block any remaining mould stains with an appropriate primer.*This coating contains a biocide to protect the dried film from fungal degradation. Once dried the paint film is classed as a treated article and contains the surface biocides 2-Octyl-2-H-isothiazolin-3-one 0.222% & Terbutryn 0.178% by weight. Determination of Resistance of Surface Coatings to Mould Growth ( BS3900 Part G6).