Active Services, Specialist Building Treatments, Surveying and Contracting, Tel 01822 841005, 01752 256717


Active Services have 26 years experience in waterproofing for basement conversions and underground walls but also in the more complex situations of lift pits and underground walls below the water table.

All new and existing basements, houses with all or part earth retaining walls can easily be brought to dry, insulated living areas.


There is a growing trend of homeowners utilising existing damp and dank cellars by converting basements into bright and comfortable habitable living areas.

The solution to basement conversions is described as Cavity Drain Membrane System which can be applied with little preparation to the walls.

Cavity membrane is both vapour proof and impervious to water, also adding additional insulation value.

Drainage provision is installed and internal finishes of insulation and plasterboard or plaster and render products are applied to provide dry and well insulated living areas.

Cavity drain membrane


New build basements are becoming an increasing popular choice. A basement increases potential living space in new dwellings, taking pressure off the need for additional land.

With improving construction techniques and waterproofing technology the concern for leaks is no longer a stumbling block.


A waterproofing design specialist is called for under BS 8102 and by all the Guarantee Companies, NHBC, Premier and LABC all require the qualification. Certificated Surveyor Structural Waterproofing (CSSW) is called for.

Peter Silcock of Active Services

Pete Silcock of Active Services holds the following qualifications:

  • CSRT - Certificated Surveyor Remedial Treatments.
  • CSSW - Certificated Surveyor Structural Waterproofing
  • Member of Waterproofing Design Register (WDS)

We are therefore able to provide waterproofing design with Architects, Engineers, Geotechnical specialists.

Active Services is also an installation contractor with a 30 year track record of installation. We install both new build and retro fit waterproofing systems so the complete package can be delivered.

Options are therefore available for Design only or Design and Fit. Design cost can be reduced if Active Services fit the system designed. As PCA members our work can be covered by GPI insurance backed guarantee.

Click on the large picture below to view a slideshow of our structural waterproofing work in action.

Structural waterproofing required

Member of the Property Care Association Insurance Backed Guarantees Trust Mark

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