Ronseal
Ronseal Thompson's One Coat Stain Block Damp Seal 750ml 34578
Model 34578
Best price
Lowest we’ve seenWhere to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked an hour ago | £21.80 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 checked an hour ago | £24.95£30.28 | In stock | Visit Tooled Up (opens in a new tab) |
 retailer's price from 16 Jul 2026 | £25.74 | In stock | Visit Blueperry Tool & Builders Merchants (UK) (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
A high-performance stain block designed to seal damp, water and other household stains in a single coat. Its micro-porous formulation allows trapped moisture to escape while permanently stopping stains from reappearing, and it can be applied directly to damp surfaces without pre-treatment.
The one coat formula means the surface is ready to decorate after 4 hours; where a second coat is needed, allow 4 hours between coats and a further 4 hours before decorating. Coverage is up to 7m²/L, depending on the porosity of the substrate.
This 750ml size offers a balance of coverage and convenience for standard domestic projects, and is supplied in a tin with a re-sealable lid for storage between uses.
Features and Benefits
- :
- 750ml size perfect for standard domestic projects
- Ideal balance of coverage and convenience
- One coat application saves time
- Micro-porous formulation allows moisture to escape
- Ready to decorate in 4 hours
- Permanently seals damp and water stains
- Re-sealable tin for easy storage Specifications: Seal Type: Damp Seal Colour: White Size (ml): 750 Application: Paint
You might also be interested in
Similarly priced alternatives we compare across multiple retailers.
from
£21.66
2 retailers
from
£21.95
2 retailers
from
£22.48
2 retailers
from
£22.48
2 retailers
from
£20.58
3 retailers
save £3.37
from
£20.62
3 retailers
save £4.33