Basement conversion Chelmsford
Below ground level or part earth-retaining structures can generally be prone to hydrostatic pressure of moisture (lateral penetration). It you do not intent to live in the basement this doesn’t really pose a concern. But if you would like to use your basement as extra living space you will need to consider various options to make the basement habitable. Our highly experienced team will be pleased to carry out an inspection and provide a detailed report on the most suitable basement conversion method.
BS8102:2009 is the British Standard for waterproofing below-ground structures. Working to this standard ensures consistently high quality and also reduces the possibility of waterproofing systems failing. There are three types of protection available.
This is the most traditional method where a cementitious multi render coat will be applied directly to the basement wall. It includes a waterproofing agent but will rely on the substrate being in a sound condition. If not, then the slightest movement or a hairline crack in the substrate could be enough to cause failure.
Cavity Drainage Membrane
A more modern tanking alternative is to use a plastic dimpled membrane. This will usually incorporate drainage channels and a sump chamber. It cannot withstand water pressure, but instead pumps water away to produce a dry usable space. Basement walls can then be finished with insulated plasterboard and skimmed with plaster. Or a render can be applied directly to a meshed membrane.
Dry Lining System (without drainage)
If you would prefer not to use a full drainage system, a ventilated dry lining can be installed in the basement to protect from damp or salt contamination. Plastic membrane can also be used with the same outcome. However, this would not be recommended where standing water exists as it will not resist water pressure therefore not being waterproof.
Whichever method is used for your basement conversion, two important factors should be considered when making the area habitable. Mechanical ventilation if the basement doesn’t have windows and adequate heating.
Waterproofing to Floors
In some basements our experienced surveyor will recommend Epoxy resin as a suitable medium for tanking solid damp floors that are still in good structural condition. Two coats will provide a durable waterproof membrane and will tolerate normal mechanical wear.
To get a quote for your basement conversion in Chelmsford and the surrounding area, do not hesitate to get in touch.