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Product Details

Easy to use two-coat system. Mix with water and apply with a brush. Provides a waterproof coating for brickwork, concrete and stone. Suitable for above and below ground level. Resists positive and negative water pressure, and is water vapour permeable.

Technical Specification
Brand Bostik
Manufacture ID 540224
Safety Data Sheet click here
Weight (kg) 20
Delivery details
Order value: Under £10 £10 & over
Express usually Next Business Day before 6pm
Due to temporary service restrictions our estimated delivery time is currently 2-3 business days
£5 Free
Turbo usually Next Business Day before 12 noon Temporarily unavailable £10 £5
Remote areas standard delivery (2-4 days) £5 Free
Order Value: Under £25 Over £25 but less than £75 £75 & Over
£10 £5 Free

Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details
If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 9pm Mon-Fri (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Bostik Cementone Tanking Slurry 20kg is rated 4.7 out of 5 by 26.
Rated 5 out of 5 by from Good Slurry Good coverage and goes on easily. Covers imperfections in wall.
Date published: 2020-01-03
Rated 3 out of 5 by from Only partially successful This was used to tank our cellar walls and floor, three and a half years ago. It took several coats in places to stop water working through. The problem reoccured later this year and I completely re-covered the floor again. Despite this, water still came up in places. These sections were treated another two times but with only partial success. The product appears to be quite successful with damp but water will find a way of getting through however thick and however many applications are made.
Date published: 2019-10-19
Rated 5 out of 5 by from dry floor now Purchased this to tank my workshop as the lower 1/3 is below ground required two coats but did the job, floor and lower walls now water tight. Pleased with purchase.
Date published: 2019-07-22
Rated 5 out of 5 by from A great application against rising damp ! Purchased this slurry to apply to a renovated kitchen wall to stop ‘rising damp’ ( it’s an old property ) . It has great reviews so , I followed the instructions . It was hard work but if its worth doing , do it well !
Date published: 2019-06-22
Rated 5 out of 5 by from Useful product Easy to use snd apply. Mixing was easy. It didng go as far ax expected however, but there weremultiple corners ion the wall which required additional thickness. Would use again.
Date published: 2019-06-05
Rated 5 out of 5 by from Tanking slurry Did the job as specified on the tin so to say
Date published: 2019-03-21
Rated 5 out of 5 by from Good product Easy to mix and use and seems to have worked as good as more expensive products
Date published: 2018-10-22
Rated 4 out of 5 by from does the job this is a good product if used properly
Date published: 2018-10-08
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