How To Tank A Damp Wall. Inspect your roof during wet and windy weather to decide if a damp ceiling patch is due to roof tanking (applying waterproof linings to walls and floors) is not recommended in old buildings. They might be cellar walls or basement walls or even retaining walls.
Tanking is applying a liquid damp proof.
In a damp proof course, a preventive barrier of an impervious material ( something that doesn't allow water to pass through) is constructed into the brick wall about 150mm above ground level. How does tanking slurry work? As you can see on figure 2, this is a slosh tank located on the top of the structure. What does damp proofing house walls entail?