Ronseal
Ronseal Thompson's Stain Block Damp Seal 250ml 30853
Model 30853
Best price
Lowest we’ve seenWhere to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked an hour ago | £8.40 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 retailer's price from 16 Jul 2026 | £10.30 | In stock | Visit Blueperry Tool & Builders Merchants (UK) (opens in a new tab) |
 checked 2 hours ago | £10.95£11.65 | In stock | Visit Tooled Up (opens in a new tab) |
Prices exclude delivery. We may earn a commission if you buy through these links, which never affects the ranking above — it is always cheapest first.
Price history
Full price historyThis is the lowest price we have recorded. If you were waiting for a drop, this is it.
About this product
Ronseal Thompson's Damp Seal is a white, high-performance seal for covering damp patches, water marks and other household stains. This 250ml tin suits smaller repair jobs and spot treatments around the home or on site.
Its micro-porous formula lets trapped moisture escape while permanently stopping stains reappearing, and it can be applied directly to damp surfaces without waiting for them to dry. One coat is usually enough, ready to decorate after 4 hours; if a second coat is needed, allow 4 hours between coats and a further 4 hours before decorating.
Coverage is up to 7m² per litre, depending on the porosity of the surface.
Features and Benefits
- :
- 250ml tin ideal for small-scale repairs and spot treatments
- White finish ready to decorate in 4 hours
- One coat coverage for most applications
- Micro-porous formula allows moisture to escape
- Can be applied directly to damp surfaces
- Coverage up to 7m²/L depending on porosity Specifications: Seal Type: Damp Seal Colour: White Size (ml): 250 Application: Paint
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