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Thompsons Stain Blocking Damp Seal

Thompsons Stain Blocking Damp Seal


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Coats: 2   Amount Req.


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

Colour: White

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 IconRecoatable 4-6 hours

Brush applied IconBrush applied

Coverage 6-8 SqMtrs per Litre per Coat IconCoverage 6-8 SqMtrs per Litre per Coat

2 coats required Icon2 coats required

Clean equipment with White Spirits IconClean equipment with White Spirits

Thompsons Stain Blocking Damp Seal Reviews

Feedback for Thompsons Stain Blocking Damp Seal has been compiled from 1 reviews.

DateProductScoreCustomer Comment

Thompsons Stain Blocking Damp Seal - 250ml

  • Customer also bought: .... :
  • Thompsons Water Seal One Coat 5 litre
Customer Comment:

Did what I expected it to do.

Delivery Information

 UK Mainland
 Standard Delivery

2-3 Days 1

FREE - Orders over 40
 Express DeliveryNext Working Day 1
£2.50 - Orders over £40
 Premium AMMon-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 Delivery3-4 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

Offshore Postcodes:
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

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