The 10 damp proofing specialists from Google's results for Harrow, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GoogleHarrow
AJ Waterproofing Services works on residential and commercial buildings across London from its Harrow base. The firm handles structural waterproofing, damp-proofing, timber treatments and the maintenance or replacement of basement sump pumps.
07378 323232 63 Charlton Rd, Harrow HA3 9HR
on GoogleHarrow
Shield Preservation provides rising damp treatments, mould control, and cellar tanking in Bromley Common. The business works with homeowners and commercial property managers to repair and prevent damp problems.
on GoogleChorleywood, Rickmansworth
Avant Garde Damp Solutions provides damp proofing services to property owners in Chorleywood and Rickmansworth.
0808 164 8398 8-10 Heronsgate Rd, Chorleywood, Rickmansworth WD3 5BW
on GoogleWatford
Kenwood Damp-Proofing performs damp proof course injections and basement tanking to address rising and lateral damp. Based in Watford, the team completes moisture remediation for both commercial premises and residential homes throughout the region.
020 8950 9070 9 Greenhill Cres, Watford WD18 8QU
on GoogleBelmont Rd, Camberley
Preservation Treatments resolves damp issues, woodworm infestations, and timber rot in domestic and historic properties across Camberley and London. Additional services include cellar waterproofing, structural resin repairs, and anti-condensation paint applications.
01276 66466 Belmont House, Belmont Rd, Camberley GU15 2NZ
on GoogleHarrow
Cedar Care works on homes and business premises across London and the Home Counties from its base in Harrow. It installs chemical damp proof courses and damp proof render, and carries out structural waterproofing. The firm also treats and preserves timber, deals with dry rot and tackles condensation.
020 8864 9624 129 Greenford Rd, Harrow HA1 3QN
on GoogleThames Ditton
Tapco HomeDry carries out damp proofing, water damage restoration, and structural repairs for commercial and residential properties. Working from Thames Ditton, the team treats wet rot, dry rot, and woodworm while installing cavity wall ties, basement tanking, and condensation controls.
020 8398 6663 12 Thorkhill Rd, Thames Ditton KT7 0UE
Harrow
UK Damp Surveys conducts independent damp and timber inspections for homeowners, buyers, and mortgage lenders. Surveys diagnose rising damp, condensation, dry rot, and woodworm infestations. Inspections include detailed timber evaluations to identify structural decay.
Harrow
London Damp Company undertakes structural waterproofing, cavity drainage installations, and plastering for properties in Croydon and London. Its scope of work also encompasses brick cleaning, repointing, and basement tanking projects.
Harrow
Plastering Aspects provides plastering and damp proofing services in Harrow.
In Harrow, damp survey typically costs £175 – £350. Labour in Greater London runs 15% above the UK median, which accounts for most of the difference from the same job elsewhere.
These are the firms from Google's results for "damp proofing harrow". They are ranked on Google rating, online presence and other factors.
The figures above are Harrow ranges. These explain what drives them, so you can read a quote properly.
What causes condensation on windows, walls and in the loft, how to stop it with heat, ventilation and less moisture, the Part F fan rules, and how to tell it from a leak or damp.
The signs of woodworm, how to tell old holes from an active infestation, what causes it, DIY against specialist treatment, bats in the loft, and buying a house with woodworm.
What black mould is, how dangerous it is and for whom, how to remove a small patch safely, why bleach falls short, how to stop it returning and who fixes it in a rented home.
No. Most diagnosed rising damp turns out to be condensation, a leaking gutter or a bridged damp course, none of which need injection. Pay for an independent survey from someone who is not quoting for the remedial work.