Ronseal Thompson's Stain Block Damp Seal 2.5 L

Ideal for damp-related staining, this Stain Block Damp Seal from Thompson’s is a high-performance interior seal designed to stop staining and seal surfaces in one coat. The micro-porous formulation allows trapped moisture to escape, making it suitable for application directly to damp ceilings and walls. The product is white, comes in a 2.5-litre tin, and becomes over-paintable after a short drying period, enabling decorating soon after use. It permanently prevents the reappearance of stains and is noted for its toughness on damp surfaces.

In use, the coating dries quickly and can be recoated after a short wait. The product is formulated to seal and cover stains while allowing moisture to escape through the micro-porous layer, reducing the need for multiple coats on damp substrates.

Features

• Micro-porous formula lets moisture escape
• Directly onto damp surfaces
• Seals and covers stains
• White 2.5L tin
• Dries and can be recoated after 4 hours
• Suitable for interior ceilings and walls

Usage

1. Apply directly to damp surfaces.
2. After the second coat, leave for 4 hours before decorating.