The term ‘tanking’ is a term used to describe a waterproof barrier applied to the walls and floor of a below ground structure.
There are numerous products on the market, all of which are designed to provide a waterproof barrier however, since the mid 1990’s the introduction of water management, cavity drain membrane systems, have been in vogue.
BS8102 (2009), Code of practice for the protection of below ground structures against water from the ground, was updated in 2022 and provides a benchmark that Designers, Manufacturers and Contractors alike should seek to attain when dealing with such structures; it is fair to state that prior to, and since, this code of practice was introduced there are many situations where the standard wasn’t achieved and, accordingly, many installations have failed to fulfil their design function with devastating consequences.
Optimistically, homeowners may turn to their home insurance provider in the hope that a claim can be made against their buildings insurance policy only to be told that the policy does not cover them in the event of: ‘rising water table’ , ‘gradually operating cause’ and/or ‘failed tanking system’. If such an ‘event’ has occurred within the past 5 years there is a chance that such repudiations can be challenged successfully. This can be assessed jointly by myself and an experienced Loss Assessor / Associate on the basis of no win / no fee.
The C.S.S.W. qualification, which I successfully attained following completion of examinations at the Property Care Association, in 2009, should provide you with the peace of mind that I have a good understanding of BS8102 and the requirements that any chosen system should satisfy.
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JOHN GOBLE. Independent damp & decay inspection services 