Thompsons Stain Blocking Damp Seal 750ml

The Thompsons Stain Blocking Damp Seal 750ml is a specialist interior sealant designed to block and cover damp, water and household stains on walls and ceilings. With a micro-porous formulation, it allows trapped moisture to escape while applying directly to damp surfaces, enabling decoration from as little as four hours afterwards. The product offers reliable stain blocking and surface preparation in one coat, making it suitable for use in renovation or repair projects where moisture or staining has occurred.

• Can be applied directly to damp surfaces for immediate treatment
• Micro-porous formulation allows trapped moisture to escape
• Covers and seals water, damp and household stains permanently
• One-coat system allows over-decoration in as little as 4 hours
• Suitable for interior walls and ceilings across various substrates
• Coverage approx. 5 m² per litre (dependent on surface porosity)