Ronseal One Coat Damp Seal Interior Paint - White

Say goodbye to damp stains for good. Ronseal One Coat Damp Seal is the ultimate interior damp-proofing solution designed to permanently block and seal damp patches on walls and ceilings. This high-performance white matt paint applies directly to damp areas with no need for preparation—saving you time, effort, and stress.

Perfect for DIYers and professional decorators alike, this powerful sealer stops unsightly damp marks from bleeding through your topcoat, ensuring a flawless finish every time. Whether you're tackling condensation spots, water marks, or minor leaks, Ronseal One Coat Damp Seal gets the job done—fast.

✅ Seals damp in just one coat
✅ Paint over in only 4 hours
✅ No sanding or prep required
✅ Suitable for all interior walls and ceilings
✅ High-opacity white matt finish

Coverage & Sizes:

• 750ml – Covers up to 3.75m²

• 2.5L – Covers up to 12.5m²

Quick Specs:

• Touch dry: 1–2 hours

• Recoat time: 4 hours

• Application: Brush or roller

• Finish: Matt

• Colour: White

• Number of coats: One

• VOC level: High

Ideal For:

• Blocking damp stains before painting

• Bathrooms, kitchens, basements, and other moisture-prone areas

• Quick renovation or emergency repairs

Why Choose Ronseal One Coat Damp Seal?

This is not just any stain blocker—it's your first line of defence against damp damage. Trust Ronseal to protect your home with a long-lasting, reliable barrier that locks in damp and leaves your surface ready for a fresh coat of paint in just hours.

Protect your home. Paint with confidence. Choose Ronseal.

Ireland & Northern Ireland — 1–3 working days. Charged by total order weight, VAT included:

• Up to 30 kg — €6.99, or free on orders over €85
• 30–60 kg — €13.99
• 60–100 kg — €27.99
• Over 100 kg — pallet delivery €49.99

Great Britain — 2–4 working days. €13.95 up to 30 kg, then €27.90, €55.90 and €99.90 by the same weight steps. There is no free delivery to Great Britain.

Rest of Europe — non-liquid items only, from €11.75, priced by destination and weight at checkout. Paint and other liquids ship to Ireland, Northern Ireland and Great Britain only.

Dispatch and collection — order before 12pm Monday to Friday and it ships the same day. Click & collect at Ballymount, Dublin 12 is free and often ready within the hour.

Returns — 14 days to change your mind and 14 more to send it back. Tinted paint is non-returnable once mixed.