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Commercial Basement Waterproofing

Basement waterproofing of commercial building

Basement waterproofing of commercial building

Unlocking the potential in a basement storey can bring massive benefits to a commercial property. Undergoing a basement conversion can turn a basement into a functional living or working space, increasing property value and offering a far more cost-effective option than buying or building new space. First, however, you must protect against damp problems, and here Peter Cox’s basement waterproofing experts can help.

Basements and cellars are particularly susceptible to damp, which can penetrate walls and floors due to capillary action and the pressure of water below ground level. This water ingress can lead to rising damp, penetrating damp, or in extreme cases, flooding. Similar damp problems can also be found in ground floors of older properties if they are below external ground level.

Basement waterproofing survey

To prepare your cellar or basement for renovation, you must control the moisture and water entering the building structure, with correct ventilation in place to ensure moisture can exit. It is crucial that these steps are taken before renovation work can begin, as the cost of rectifying damp problems after a conversion has taken place could be much greater.

With a basement waterproofing survey from Peter Cox, help is at hand for you to work out the best course of basement waterproofing for your commercial property. A surveyor will visit the property, identify the causes of water ingress, and advise on the cost and type of work which needs to be carried out. Peter Cox offer a range of basement waterproofing solutions, which are detailed below, and are suitable for underground areas of all sizes. Peter Cox’s basement waterproofing installations comply with BS8102 and carry a ten year basement waterproofing guarantee.

Basement tanking systems – cavity drain membrane

Basement or cellar tanking uses a studded damp-proof membrane applied as a dry lining to the walls and floors.

Water is removed through perimeter drainage, channels and gullies, either to a drain or a sump pump. Joints are sealed so that the waterproof membrane forms a dry surface to cellar walls and floors.

Once the basement waterproofing process has been completed, redecoration can proceed rapidly. The walls can be finished either by plastering direct or with plasterboard, and the floors can be timber boarded or finished with screed.

waterproof basement tankingWater drainage sumps and pumps

The solution, the preferred option for basement waterproofing, uses a dual drainage system with two submersible float activated pumps. These are installed in a preformed sump chamber and have built-in non-return valves.

For extra protection the pump system should have an alarm, as membrane systems rely upon the pumps to remove the water or flooding can occur. Access is provided for periodic maintenance.

Ventilated basement dry lining

A ventilated dry lining system can be installed to protect against damp or salt contamination. It can be installed without drainage, but in this case it can’t be waterproof as it will not resist water pressure.

Basement waterproofing – Cementitious tanking

This is the traditional basement waterproofing method, in which multiple waterproof coatings of render are applied by spray, brush and trowel to the walls and floor in a dense sand/cement mix. Thorough preparation of the target area is critical. The tanking coatings can be plastered to achieve a smooth finish.

Cementitious tanking is a proven solution for water ingress by capillary action, and for penetrating damp in small areas. There is no need for a drainage or pumping system.

A basement conversion is a fantastic way to increase space in a commercial property, and Peter Cox’s basement waterproofing experts can help you to take the first step in unlocking the potential in your underground storey. To book a commercial basement waterproofing survey, fill in the form to the right of the page or visit our contact us page. For more information on our domestic basement waterproofing services, visit the domestic basement waterproofing page.