Thompsons Stain Blocking Damp Seal is a high performance, microporous, breathable damp seal, which covers interior damp, water and other household stains.
It can be applied directly to damp ceilings and walls allowing the penetrating moisture to evaporate over time, therefore preventing peeling wallpaper and flaking paint.
Preparation: Ensure the source of the damp has been repaired and rectified before treating any mould, if present, with a good fungicidal wash. Ensure the surface is clean and free from dust before applying Thompsons Damp Seal.
Application: Apply liberally over the affected area with a good quality brush, overspreading approximately 30cm/ 12”. Two coats will be required, allowing 4 hours between coats (longer in cold conditions).
Usage: Interior Walls and Ceilings, including Plaster, Cement and Stone
Coverage: 7 SqMtrs/ litre/ coat – depending on porosity of the surface
Drying Time: 4 Hours
Available in: 250ml and 2.5 litre
Clean equipment: White Spirits or Brush Cleaner
Please also see our Thompsons section for their full range of water seal products.
Recoatable 4-6 hours
Coverage 6-8 SqMtrs per Litre per Coat
2 coats required
Clean equipment with White Spirits
Thompsons Stain Blocking Damp Seal Reviews
| UK Mainland|
2-3 Days 1
FREE - Orders over £40
| Express Delivery||Next Working Day 1||£4.95|
£2.50 - Orders over £40
| Premium AM||Mon-Fri Pre 12|
Mon-Fri Pre 10.30AM
| Premium Saturday ||Saturday 9:00-17:00 ||£9.95|
Scottish Highlands, Islands, Isle of Wight, Isle of Man
| Standard Delivery|| 3-4 Days|| £6.95|
| Northern Ireland|
| Standard Delivery||3-4 Days ||£9.95|
| Republic of Ireland and Channel Islands|
| Standard Delivery ||3-4 Days||£14.95|
1 Order online before 5pm Monday - Friday for same day dispatch.Highland Postcodes:
AB30-38, AB44-56, FK17-21, G83, IV (all), KW0-14, PH17-32, PH34-48
Aberdeenshire, Angus, Argyllshire, Ayrshire, Caithness, Highland, Invernes-shire, Perthshire, Ross-shire, Stirlingshire
BT (all), HS1-9, IM (all), KA27-28, KW15-99, PA20-99, PH33, PH49-99, PO30-41, ZE (all)
Northern Ireland, Republic of Ireland, Isle of Man, Isle of Wight, Channel Islands and Scottish Islands