Basement waterproofing

Embarking on a below ground waterproofing project, whether for an existing property basement conversion, as part of a new build basement project or as an essential requirement to offer protection from water ingress, is a highly specialised operation with skilled workmanship key to its success.

BS8012: 2009 Regulations (the Code of practice for the waterproofing of underground structures) also govern below ground waterproofing with criteria specified that must be followed.

As basement waterproofing contractors and a company who solve damp problems, we provide a range of below ground waterproofing solutions that work to keep a basement dry and damp free.

We help both our residential and commercial clients in the following ways:

  • We design and install waterproofing systems for basement and cellar conversions, working with the architect or basement conversion company.
  • To apply below ground waterproofing to combat damp problems in a damp basement or cellar.
  • To stop damp where there is no basement but external ground is higher than the internal floor.
  • To carry out installations, inspection and servicing of sump and pumps and chamber.
  • To combine the control of radon gas with a waterproofing system.
  • To make properties more resilient to the effects of flooding using waterproofing products, methods and materials.

Basement Waterproofing & Damp


Sump & Pump Servicing


Radon Information, Testing & Control

Why us?

We are committed to providing our clients with the best in basement waterproofing solutions and take pride in offering high quality solutions, workmanship and customer care to ensure our clients are looked after and their properties are fully protected for the long term.

  • Experienced and qualified.
    • Surveyors certified in Structural Waterproofing (CSSW)
    • Long standing industry experience
    • Project management approach
  • Accredited
    • Members of the Property Care Association Register of Waterproofing Design Specialists
    • Approved waterproofing contractors with waterproofing product manufacturers including Delta Membrane Systems, Wkyamol and Triton.
  • Regulated
    • Work to guidelines contained in industry regulations BS 8102:2009
    • Hold Professional Indemnity Insurance for Design of Waterproofing for Underground Structures
    • Meet regulations for the National House Build Council (NHBC) requirements on new build properties
  •  Guaranteed
    • Company below ground waterproofing guarantee
    • Third party insurance scheme
    • Product guaranteed via our product suppliers.

The basement waterproofing process

Selecting the right waterproofing method

Waterproofing can be carried out using a variety of methods including cavity drainage membrane, drainage channels, cementitious tanking and sump and pumps.

ProTen’s role is to specify the most suitable method and grade of waterproofing protection relevant to the project requirements, site conditions and the end use of the structure.

Basement Survey and System Design

The survey is key to the specification and as such is carried out by one of our team of experienced and qualified Basement Waterproofing Surveyors.

Using their experience and knowledge to assess ground conditions and the site and build complexity, our surveyor will design the system based on their survey observations as well as adhering to BS8102 regulations.

Forming part of the essential design team, our Surveyor will inspect the design plans for your basement conversion project relative to the waterproofing requirements, and design the right waterproofing solution.

Our approved installer status with the major waterproofing product manufacturers, only given to those who have passed their rigid approval a process, allows us to put forward a design using products that are industry approved and quality guaranteed.

Basement Waterproofing Contractors

The installation of the waterproofing system is overseen by our Contract Management team and carried out by our Operatives. Together we work alongside other professionals involved in the project to ensure the best communication and the installation of the basement waterproofing system is carried out with precision and expertise.

More information about our basement services:

basement conversion

5 Tips for converting your basement

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How do we waterproof a basement? – Blog

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Basement Conversion

Case Study: Basement waterproofing, Manchester

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Our Guarantee

Our work is guaranteed through our own ProTen Company Guarantee and we offer further peace of mind via our third party Guarantee Protection Insurance Scheme.

Find out more about our guarantees here

Our Accreditations