Ronseal One Coat Damp Seal 2.5L Protects Walls & Ceilings 2.5 kg

Ronseal One Coat Damp Seal is a professional-grade, quick-drying interior sealer that permanently blocks damp patches and stains on walls and ceilings. This single-coat solution penetrates affected areas, forming a breathable barrier that prevents moisture from bleeding through and damaging new paint or wallpaper. Its matt, white finish ensures excellent coverage and a smooth appearance, while the low-odour formula allows safe indoor use.

Unlike traditional primers or fillers, One Coat Damp Seal can be applied directly to damp areas without extensive surface preparation, saving time and effort on DIY or professional projects. Touch-dry in just 1–2 hours, it is ready to paint or wallpaper over after 4 hours, enabling rapid turnaround for repairs.

Key Features & Benefits:

• Fast and efficient: Covers damp patches in one coat, reducing project time.

• Direct application: Can be applied straight onto damp surfaces without priming.

• Quick overcoat: Touch-dry in 1–2 hours, ready to paint in 4 hours.

• Durable protection: Blocks damp stains and prevents them from reappearing.

• Matt finish: Smooth, non-glossy surface ideal for interior walls and ceilings.

• Safe indoor use: Low-odour, suitable for DIY and professional environments.

• Versatile: Works on walls, ceilings, plaster, previously painted surfaces, and minor damaged areas.

• Economical: Single coat covers up to 5 m² per litre, minimizing product usage.

Ideal Uses:

• Interior walls with damp or water stains

• Ceilings affected by condensation or water ingress.

• Patches behind leaks or roof drips

• Prepping problem areas for repainting or wallpapering

• Covering minor surface chalking or flaking paint

Sizes & Coverage:

• Pack Size: 2.5 L

• Coverage: Up to 5 m² per litre, depending on surface porosity and condition