Freeman Dawson & Co Ltd

Timber Decay, Timber Infestation and Rising Damp Specialists

Types of infestation
Types of damp
Why FD?


Injected damp proof courses are an attempt to provide physical barriers to rising dampness they can do nothing for the condition of plaster which is already contaminated. Replastering preferably using a washed sharp sand and cement render with a good waterproofer, must be carried out and in fact is important than a new chemical damp proof course. As a company, we will inject brick walls but prefer to only replaster flint and stone walls as the success of injected damp proof courses in these media is debatable.

Tanking is a specialised form of plastering for subterranean structures to prevent penetrating dampness from affecting internal wall surfaces. It is also possible to use a rigid plastic membrane as a form of lining for such structures. Both have advantages and disadvantages and a careful survey must be undertaken to determine which method is appropriate.

Freeman Dawson & Company Ltd 2000