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Cellar tanking

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Cellar tanking is a method of cellar waterproofing which involves putting a lining on the cellar walls that effectively forms a ‘tank’ around the cellar to stop water getting in. Cellar tanking is one of the original and most common methods of waterproofing a cellar or basement.

Traditionally, when a property was constructed the stone foundations were often laid up with little or no mortar to fill and seal the gaps between the stones and even the builders and property owners expected them to leak. Cellar tanking is a method of cellar waterproofing that was developed to stop the leaking. It involves putting a lining on the walls that effectively forms a ‘tank’ around the cellar to stop water getting in. This lining gives a smooth, seamless wall surface which looks good and also provides moisture control.

Problems associated with cellar tanking

Cellar tanking systems work on the premise that a protective layer applied to the inside face of a cellar wall can stop all water penetration. In theory this is true but it does not work all the time. Cracks can develop in the lining due to the property settling or other vibrations (i.e. if your property is near a train line or underground). When a crack develops water ingress will occur and all the money you spent on waterproofing your cellar will be wasted. If your property is near a rail line or underground and you are interested in a cellar conversion then take the time to look through all the cellar waterproofing options.

While the cellar tanking does hold back the water in the soil, the water pressure will gradually increase. The masonry can not stretch under this pressure and over time it will crack which will lead to a leak into your cellar. Even a small leak can let a large volume of water into your cellar and your entire cellar conversion could be ruined.

Alternatives to cellar tanking

Wise Basement Systems recommend that property owners protect themselves from wet cellar problems with a water management system. Rather than preventing water from entering the cellar, water management systems manage the water when it comes into the cellar. The water is directed into a cellar drainage system where it is channelled either out of the cellar or to a sump pump.

Our cellar drainage system comes with a 10-year basement and cellar guarantee and all work is carried out by experienced and qualified surveyors who are trained to CSSW (Certified Surveyor of Structural Waterproofing) standards.

Contact us about cellar tanking

For additional information and help on cellar tanking contact us on 0808 256 4538 or contact us online using our contact form.

Alternatively, you can request a basement and cellar survey online or check out the links below for further information.


Get in touch0808 256 4538

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Speak to a cellar specialist

Find a branch in your local area to speak to a basement & cellar specialist or call 0808 256 4538. Our surveyors are trained to CSSW (Certified Surveyor of Structural Waterproofing) standards. Put together with our 10-year cellar repair guarantee you can have peace of mind that we will have the right solution for your cellar.



Get in touch0808 256 4538