Everbuild Stain Block 400ml - This spray-applied, heavily pigmented white paint effectively conceals and prevents stains such as water marks, mould, rust, nicotine, grease, soot, and pen marks from bleeding through subsequent coatings. Its quick-drying formula allows for overcoating in just 15 minutes, making it ideal for both household and commercial surfaces. The 400ml aerosol ensures easy application and provides a durable, long-lasting barrier against persistent stains.