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170 people bought this in 48 hours

Dulux Damp seal White Primer & undercoat, 750ml

Sold & shipped by B&Q
£20£26.67 per l

Product details

Product information

Dulux Damp Seal covers damp or water stains on walls and ceilings whilst also preventing the stain from reappearing. Available in a matt finish which can be easily overpainted in your perfect colour

  • Water-based
  • Apply using a Brush or roller
  • Instructions for Use - Make sure the surface is clean, dry and free from loose particles or mould. Remove any wallpaper or loose paint. Fill holes or cracks with an appropriate Polycell product and sand down well. This is not a cure for damp, which should always be treated at source before applying, also not suitable for use against rising damp. Should not be used at ground level, where efflorescent salts are present or where condensation is a problem. Use a brush or roller, allow new plaster to dry for at least 1 to 2 weeks before using this product. Stir well, do not thin. Apply the product generously to damp but not saturated surfaces working well over the affected area while avoiding runs. Avoid splashing on polystyrene tiles or any plastic materials. Allow to dry fully before over coating overnight. Treated surfaces are now ready to decorate, drying of wall coverings especially viny coverings may be slower.

Features and benefits

  • Good coverage
  • Prevents the reappearance of stains
  • Long lasting finish

Legal information

  • Contains 1,2-benzisothiazol-3(2H)-one, C(M)IT/MIT(3:1) and methylisothiazolinone.May produce an allergic reaction.

Health and safety

Please note that this item has additional safety or regulatory datasheets available. The product may have possible health and safety hazards covered in these documents. Refer to the container for full information and always follow the instructions.

Specifications

BrandDulux
ColourWhite
Coverage8m²
Drying time1 h
LocationInterior
Pack quantity1
Recoat time24 hours
VOC levelMinimal
Product code5010212641361
Reviews
3.93 / 5(33 reviews)

MHR - 5 / 5 - 26/04/2025

Great Coverage

Great coverage, really did the job well. Would use again.

Yayra - 4 / 5 - 09/09/2024

The product is good

I bought this product last month and think it was good but a bit too expensive

CAW - 5 / 5 - 26/08/2024

Great

I bought few days ago and price and quality are good

Al5 - 5 / 5 - 18/08/2024

Great product

Great product that did exactly what it should! Easy to use too

Johnny Mac 1965 - 5 / 5 - 02/05/2024

The product was good and worth the price

I have purchased a few tins of this paint in the past and recently. The product has and is still consistent in its performance and has sorted out the issues at an affordable price

Johnandmoshow - 5 / 5 - 25/10/2023

A cure for an ugly problem

Was pleasantly surprised at how easy this paint went on and the good coverage it gave ...... Impressed

Saalihah - 5 / 5 - 18/10/2023

Great

Use to clear damp in my house, no more damp left walls are back to normal

DIY bird - 5 / 5 - 27/09/2023

excellent coverage

Used this paint for the first time recently. I was very impressed with the consistency and how good the coverage was. Really good for a quick refresh.

Bannyboy - 4 / 5 - 28/06/2023

This product is very good.

It goes on well without splashing. oooooooooooooooooooooooooooooooooooooo.

bob223334444 - 1 / 5 - 20/06/2023

ineffective after 4/5 coats

This product is water based, how doe's it block water stain, or form a barrier against the same ?