Tanking Systems
Tanking Systems in St Albans
At Johnson Ellis ltd. We have the tanking solution for you.
Not all cellar areas require a full drainage system , sometimes a tanking system will suffice .
There are 3 main situations which can arise in buildings, which may require the installation of a tanking system.
- The breakdown of existing masonry.
- The outside water table has risen .
- A change of use of an existing basement.
There are a number of options for completing an internal tanking system.
- Mastic asphalt will effectively waterproof walls , but must be applied to clean and dry surfaces and it will require physical support.
- Bitumen sheeting or a more rigid corrugated bitumen sheet which gives the advantage of dry - lining and waterproofing at the same time.
- Cementitious coatings both as a slurry and a render coat. When hydrostatic pressure is expected, cement based render systems are the most successful.
Cementitious coatings will usually give the best results
For a satisfactory tanking system , in all cases surface preparation is critical , even the best systems will not perform properly if not applied properly. Cracks and crevices need to be stopped speedily and joints must be effectively sealed.
In cases where water ingress is moderate and the cellar area is to used for storage rather than frequent habitation we would recommend the use of a cementitious coating.
Properly applied to chemical suppliers recommendations it will last for years, giving a dry area and valuable extra space for that additional storage that homes always seem to need.
Where water ingress is significant or hydrostatic pressure is likely to be high we recommend the use of a drained cavity system ( see our section on cellar conversion )
Contact us today
Contact Johnson Ellis Ltd today to learn more about damp solutions in North London.