Basement tanking or Cellar tanking is one of the more traditional forms of basement waterproofing and it is generally what you will find in older properties.
When buildings were constructed, stone foundations were often laid with little or no mortar between them to seal the gaps and because of this even the builders and property owners were expecting them to leak.
A lining is put on the walls so that it forms a ‘tank’ around the basement which, stops the water getting in. This lining gives a smooth, seamless wall surface which looks good and provides moisture control. Basement tanking is a method of basement waterproofing that was developed to stop all this leaking.