A traditional form of basement and cellar waterproofing generally found in older properties.

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Tanking a Basement the Wise Way

Tanking is a traditional form of basement waterproofing and is generally what you will find in older properties.

In the past, when buildings were constructed, stone foundations were often laid with little or no mortar between them and, because of hydrostatic pressure from the surrounding earth, the walls of these structures would leakBasement tanking was developed to stop this leaking.

Basement tanking involves a lining or ‘slurry’ being put on the basement walls. This creates a barrier to prevent water getting in. The lining gives a smooth, seamless wall surface which looks good and also provides moisture control.

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How BASEMENT tanking works

When people refer to a basement tanking system, they usually mean cement coatings - although the term can also be used to describe bitumen coating, epoxy resins, paints or sealants.

Tanking systems that use a coating like cement are known as “Type A” basement waterproofing systems under BS8102 (the industry guidelines for structural waterproofing). Type A means that these systems do not remove water, they simply create a barrier.

When tanking is applied to stable masonry, and special care has been taken at weak points in the structure such as the wall to floor junction, it should be completely watertight.

However, there are certain projects that tanking is not suitable for... 

Problems associated with BASEMENT tanking

Cracks can develop in the tanking systems due to the property settling - making "Type A" basement waterproofing less than ideal for new build properties.

Another problem that tanking can face is cracks caused by underground vibrations. If your property is close to a railway line, underground or busy road, the ground vibrations caused by passing vehicles can cause cracks to appear in the lining.

When tanking is not the best option, or your property has had tanking that has previously failed, there are other basement waterproofing options that may be a wiser choice.

When Tanking Fails

Correctly installed basement tanking should stop water ingress into a basement but there are a few potential problems that can cause it to fail.

Failed tanking

Alternatives to basement tanking

If you suspect you need a more modern form of basement waterproofing, then click on the links below to learn more about our internal water management systems.

Wall Waterproofing Options

Find out how our wall waterproofing systems control and drain any water away from your basement, creating a dry habitable space.

Wall waterproofing

Basement drainage systems

Find out more about basement drainage systems such as our patented WaterGuard drainage system that will keep your basement warm and dry.

drainage systems

Contact a BASEMENT tanking specialist

For additional information on basement tanking and basement tanking alternatives contact us today on 0808 256 4538 or email us using our online contact form.

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

Contact Wise Basement Systems


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