Basement Waterproofing Knightsbridge

Basement Damp Proofing System, Knightsbridge

Identifying Damp

Following and inquiry by an upset client an appointment was arranged for a Tapco HomeDry qualified damp proofing and timber surveyor to attend the property to inspect a failed Basement Damp Proofing system that had been installed by another contractor.

Some of the dry lining material had been removed to enable a thorough inspection to be carried out, which revealed serious faults in the quality of the installation.

It was found that joints were open and fixing plugs were leaking which was allowing water to enter the rooms. A thorough inspection was carried out and our report and recommendations were submitted to our client.

Eradicating Damp

It was decided that the whole of the dry lining and membrane system be removed and replaced with a completely new, sound system. On our clients instructions, our operatives attended the property and immediately removed the existing wall and floor materials and carefully disposed of them.

The walls were fully prepared and a complete, new horizontal, polyethylene, studded Cavity Drain Membrane (CDM) system was installed, correctly overlapped and joined by special joint tape and waterproof fixing plugs.

A new pump was installed into the existing sump chamber and a larger studded membrane was laid across the floors and connected to the wall membranes.

New tongue and groove chipboard was laid throughout, a galvanised wall frame was installed and plaster board lining was fitted and plastered to a smooth finish to create dry, warm rooms for many years to come.

Our Insured Damp Guarantee

The new Cavity Drain Membrane Damp Proofing system is covered by our established 20 Year Guarantee and protected by  Guarantee Protection Insurance (GPI). Installing these should only be carried out by a reputable specialist like Tapco HomeDry who are members of the Basement Waterproofing Association (BWA), the Property Care Association (PCA) and Trust Mark (Government Endorsed Standards) so do it right, do it once and call us first. 

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If you’ve noticed any of these issues, arranging a professional survey is the best way to identify the cause and prevent further damage.

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Serving London, Surrey & the Home Counties

From our offices in Thames Ditton and Esher, our surveyors cover London and the surrounding counties, providing fast response times for residential and commercial properties alike.

We regularly work with:

  • Homeowners
  • Landlords
  • Estate agents
  • Property managers
  • Commercial property owners
  • Housing associations
  • Local authorities

Whether your property requires a damp survey, timber inspection or basement waterproofing system, our experienced team is ready to help.

Map of London and the Home Counties we cover

Our Trusted Accreditations

Our certifications reflect our commitment to the highest standards of work and quality.

Property Care AssociationTrustMarkBasement Waterproofing AssociationSafeContractorCHASAccreditation

Why Tapco

Why choose us

Established in 1971

Choosing Tapco HomeDry means choosing a company with a proven history of protecting properties across the South East.

  • Established in 1971
  • Over 55 years of industry experience
  • Thousands of successful property surveys
  • Honest, practical advice
  • Qualified specialist surveys
  • Comprehensive guarantees
  • Trusted by homeowners and commercial clients

We believe every property deserves an individual assessment. That’s why our recommendations are based on what your building genuinely needs, not unnecessary treatments.

FCA Status Disclosure

Tapco (Preservation) Ltd is an Introducer Appointed Representative (Financial Services Register No. 423558) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.

Finance available on Tapco treatments