Tanking is a sure and fast way of blocking water/moisture ingress out of a property over large areas to protect and keep dry places that would otherwise be an environment uninhabitable. We can convert basements into usable spaces adding more value to your property than the proceedure costs or just keep damp at bay in areas where there is no other option.
Before chemical Tanking
This basement area had once been converted into a semi dry living area but became delapidted over time. Although there were no signs of water inngress, the area was very damp and soon became unusable due to the internal fabric suffering. All of the plastered surfaces had to be hacked off to enable proceedings.
Now dry and usable area
The walls were sandblasted, treated with two coats of anti-sulphate to stablise mobile salts, a coat of render with addatives to provide a background for the two layers of waterproofing slurry (the main ingredient), then a coat of render with addatives which sandwiches the slurry and provides a surface to apply a non gypsum based plaster to bring the area to decoration quality.
Half way through
This photo has been taken after the existing render and plaster has been hacked off and the first coat of salt retardant render has been applied. Tanking can be classed as expensive, but to perform it properly, there are many site visits for each of the layers required to go off ready for the next. This is why we work as tidily as possible so that your home is still as usable as it can be whilst the work is completed.
Sometimes, internal walls, above ground need tanking as a last resort. You may have a shared chimney that can not be treated due to un forgiving neighbours or an adjoining wall that can not be injected due to unacessable partition walls on the other side. Tanking is a sure and fast way of keeping moisture at bay from one side, positive or negative.
Below ground before membrane
This old farm building was being converted by the owner to change the use to a livable area. Due to regular water ingress we chose to use a membrane with channel drainage and double pump system. As you can see, the dirty water goods have been put into place before the tanking process starts. Any electrical works are completed after the membrane is in place behind the plasterboard.
Below ground with membrane
After cutting a channel in the concerte floor for the drainage system, this was put into place with 20mm shingle surrounding the channel which drained in to a sump with a twin pump and alarm system and battery back up in case of a powercut. Powercuts often happen when there are storms with high winds and rain so this insures the pumps keep working when they are most needed.