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Damp Seal One Coat – Damp & Stain Blocker Paint | Matt White | 500ml to 5L

Regular price   Sale price   £16.99 £16.99 Save Sold out
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Product Details

Tough paint, clean conscience

Cover damp patches and stubborn stains in just one coat, so they stay covered. A primer, stain blocker and matt white finish in one tin for ceilings and walls. It's fast drying and made in the UK.

✓ One coat✓ Blocks stains permanently✓ Primer & topcoat in one✓ Dry in 1–2 hours✓ Made in UK

Why customers choose it

  • ✔️ One-coat damp & stain cover: blocks stubborn marks so they don't bleed back through
  • ✔️ 3-in-1: primer, stain blocker and topcoat in a single product, saving prep time
  • ✔️ Long-term damp & mould resistance: creates a durable barrier that helps stop mould and mildew returning
  • ✔️ Moisture & steam resistant: after just 6 hours, ideal for kitchens and bathrooms
  • ✔️ Fast drying: touch dry in 1–2 hours for minimal downtime
  • ✔️ Hard wearing: washable once dry, with a smooth matt white finish

Stains it blocks

  • Damp & water marks
  • Mould
  • Smoke
  • Nicotine
  • Grease
  • Coffee
  • Rust
  • Crayon & pen

Surfaces: plaster, cement, concrete, brick, stone, wood and painted surfaces.

How much do I need?

  • Coverage: up to 10m² per litre in one coat
  • Rough or very porous surfaces use more paint
Size Covers Ideal for Price per litre
500ml up to 5m² Patch repairs and stain spots £33.98/L
1 Litre up to 10m² A ceiling stain or chimney breast £18.99/L
2.5 Litre up to 25m² One room's walls or ceiling £14.80/L
5 Litre up to 50m² Several rooms or a whole ceiling area £12.00/L
Best value: the 1L costs only £2 more than the 500ml but covers twice the area

How to apply in 3 steps

  1. Prepare: fix the source of any damp first. Make sure the surface is clean, dry and free from loose material. Treat any mould before painting.
  2. Apply: one coat by brush, roller or spray.
  3. Dry: touch dry in 1–2 hours, and moisture and steam resistant after 6 hours.

Frequently asked questions

Will it cover stains in one coat?+

Yes. It's designed to block damp and stubborn stains in just one coat.

What stains does it block?+

Damp and water marks, mould, smoke, nicotine, grease, coffee, rust, crayon and pen marks.

Do I need a primer or topcoat?+

No. It's a primer, stain blocker and matt white topcoat in one.

Will it fix the cause of my damp?+

It seals the surface and blocks stains from coming back through, but you should fix any leak or source of water first.

Can I use it in bathrooms and kitchens?+

Yes. It's ideal for high-condensation rooms and is moisture and steam resistant after just 6 hours.

What surfaces can I use it on?+

Plaster, cement, concrete, brick, stone, wood and previously painted surfaces.

How long does it take to dry?+

Touch dry in 1–2 hours.

Is it good for rental properties?+

Yes. Its fast drying and one-coat coverage make it popular with landlords and decorators for quick turnarounds.

How fast is delivery?+

Free next-day UK delivery on orders placed before the daily cut-off.

Shipping Information

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Returns & Warranty

To return an item to us, follow the directions listed on the return exchange form included with your order. If you don’t have this form available, you can download one by clicking here

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Store Availability

This product is available for local pickup

  • 3-4 Shrivenham Hundred Business Park, Watchfield, Shrivenham, SN6 8TZ, United Kingdom

    3-4 Shrivenham Hundred Business Park, Watchfield, SN6 8TZ, Swindon, United Kingdom

    +441793783437

    Usually ready in 24 hours

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