Having damp walls in your basement is a common problem found in cellars or basements as a result of moisture making its way through the brickwork. If the moisture passes through the wall salts can damage any walls that have no form of protection applied.
Tanking walls can act as a waterproofing barrier to prevent any damp problems you may have. It works by applying a tanking slurry onto the wall to provide a barrier and is one of the simplest waterproofing methods to carry out.
Do You Need Tanking?
If you have a damp unused basement or cellar and want to create more living space then you will need to consider tanking.
Not only will the room suffer aesthetically but there can also be further damp related problems that can be problematic. These damp issues can range from black spot mould to more serious issues such as dry rot.
Methods of Tanking Systems Used
- Cement based slurry- this is often applied with a soft brush onto damp walls (brickwork or stone). This form of tanking is relatively easy to apply but will need to work in conjunction with a damp proof membrane in order for it to have full waterproofing protection.
- Liquid Bitumen Coating- the method of tanking is painted onto clean brickwork or stone. This is a difficult form of mixture to apply onto damp masonry. Liquid bitumen coating is usually applied onto small areas or is used as the external coating for the damp proof course in place.
There are ways other than tanking that can be used for damp proofing and waterproofing walls such as using a damp proof membrane. Using a damp proof membrane is often a more preferred method of waterproofing.
If there is a large amount of moisture that is coming through the wall, a lining membrane might prove a better solution than using traditional basement tanking.
How to Apply Traditional Tanking Slurry Onto Walls
Before any tanking can take place, the first job is to remove any old or damaged plaster. Holes and cracks will also need to be filled before tanking slurry can be applied onto the walls.
The technician carrying out the works will need to make sure that the tanking slurry is prepared to the correct specification to make sure that the tanking application will be a success.
A masonry brush is used to apply the slurry onto the walls. There are usually two coats of slurry applied to make sure that it will provide an effective waterproof barrier. Once the slurry has been applied and has dried waterproof plaster can then be applied to the walls.
Tanking by the Professionals
Timberwise surveyors and technicians are highly skilled professionals who have carried out all forms of tanking to make sure property owners are free from damp.