tanking
Where external ground levels or adjoining room floors are higher, moisture can move sideways through the walls under either hydrostatic or hydraulic pressure both of which require additional damp proofing work known as tanking, the creation of a "tank" like lining on the internal wall surfaces to deal with the higher water pressures involved..
Old stone steps adjacent to the wall will cause lateral water movement into the walls and damage plaster and decorations. The steps lead to a higher ground level to the rear which causes similar problems for the back wall.
Often earlier ineffective tanking systems are uncovered during the preparatory works and these need to be removed to allow effective tanking to take place. Walls can be finished either with conventional plaster or dry lining systems.
A thorough survey will be carried out by a PCA qualified 
preservation structural waterproofing surveyor to identify the type(s) of damp present, identify causes, and specify the most practical, cost
effective solutions in a detailed report.
In accordance with BS8102 work is likely to include recommendations for extract ventilation or dehumidification, and may include the provision of submersible pump systems which can vary from single pumps to purpose built sump chamber systems including multiple pumps, back up systems and alarms according to need.
Our reports are accepted by all Mortgage providers. Fixed price treatments can be carried out by preservation, with most work covered by Guarantee.
More will be added from time to time, keep an eye on our site for further details!