Damp Proofing in Kent

Rising damp, penetrating damp and failed damp proof courses, diagnosed by PCA-qualified surveyors and put right with guaranteed treatments. Covering Maidstone, the Medway towns and Tonbridge and across Kent.

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Experts in Damp Proofing in Kent Since 1971

Damp is one of the most common problems we see in Kent properties, and one of the most commonly misdiagnosed. Tide marks, salty plaster and peeling paint can be caused by rising damp, penetrating damp, condensation or a plumbing leak, and each needs a completely different fix.

Our surveyors find the real cause first, so you only pay for the work your building actually needs.

Kent's ragstone, soft-brick and timber-framed buildings need damp treatments that respect how they were built. In Tunbridge Wells, Sevenoaks and the Medway towns we regularly find rising damp in Victorian homes, while oast houses and rural cottages are more prone to penetrating damp from exposure and failed lime pointing.

Signs of damp in Kent properties

  • Tide marks up to about a metre above the floor
  • White, fluffy salt deposits on plaster
  • Peeling wallpaper or blistering paint
  • Crumbling or "blown" plaster that sounds hollow
  • Rotting skirting boards or floor timbers
  • A persistent musty smell in ground floor rooms

What causes damp in Kent properties?

Kent's character comes from its oast houses, weatherboarded and tile-hung cottages, Kentish ragstone churches and farmhouses, alongside Victorian terraces in the Medway towns and handsome Regency and Victorian villas in Tunbridge Wells. Older buildings built with ragstone, soft brick and lime mortar need breathable repairs to avoid trapping moisture.

North Kent sits largely on chalk and London Clay, while the Weald in the south is clay that holds water. Low-lying areas along the Medway and Thames estuary have high water tables, and clay soils that shrink and swell can contribute to cracking in masonry.

Where we see damp most in Kent

Maidstone

Victorian terraces and interwar homes along the Medway, where flooding and high groundwater affect cellars and ground floors.

The Medway towns

Rochester, Chatham and Gillingham have dense Victorian terraces on low-lying ground near the estuary, with rising damp and condensation common.

Tonbridge

A riverside town on the Medway with a long history of flooding, where water damage and damp cellars are regular problems.

Our damp proofing service in Kent

Where rising damp is confirmed, we install a new chemical damp proof course (DPC) by injecting a water-repellent cream into the mortar bed at the base of the wall. The cream cures to form a continuous barrier that stops ground moisture travelling upwards. Because salts carried up by the damp stay in the old plaster, the affected walls are then replastered with a salt-resistant, breathable system so decorations don't blister again.

Penetrating damp is treated at the source. That might mean repointing, repairing render, clearing or replacing gutters and downpipes, lowering raised ground levels against the wall or fixing defective flashing. Our property maintenance team carries out these repairs in-house, so you don't need to coordinate separate trades.

Every survey includes a written report explaining what we found, what is causing it and exactly what we recommend. If the cause is condensation or a leak rather than rising damp, we will tell you, and we won't sell you a damp proof course you don't need.

How it works

  1. Survey

    A PCA-qualified, commission-free surveyor visits your Kent property, investigates with calibrated equipment and identifies the cause.

  2. Report and fixed quote

    You receive a clear written report explaining what we found and what we recommend, with a fixed quotation and no hidden extras.

  3. Treatment

    Our own trained team carries out the work, protecting your home, keeping dust down and leaving everything clean.

  4. Guarantee

    You receive a written guarantee, which can be protected by an Insurance Backed Guarantee for a single premium.

Damp Proofing across Kent

Our surveyors cover west and mid Kent regularly, including Sevenoaks, Tunbridge Wells, Maidstone and the Medway towns. We regularly work in Tunbridge Wells, Maidstone, Sevenoaks, Dartford, Cowden and East Malling, and throughout Sevenoaks, Tunbridge Wells, Tonbridge & Malling, Maidstone, Dartford and Gravesham.

Towns and areas we cover in Kent

  • Tunbridge Wells
  • Maidstone
  • Sevenoaks
  • Dartford
  • Cowden
  • East Malling
  • Gravesend
  • Halstead
  • Hartley
  • Higham
  • Kings Hill
  • Otford
  • Sittingbourne
  • Westerham
  • Borough Green
  • Strood
  • Swanley
  • West Kingsdown

Recent Tapco projects in Kent

Find out more about our damp proofing service.

Book a survey

Book a survey in Kent

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

Damp Proofing in Kent: your questions

How much does damp proofing cost in Kent?

It depends on the cause, the length of wall affected and how much replastering is needed. A single wall in a terraced house is a very different job to a whole ground floor. After your survey we give you a fixed, written quotation, so there are no surprises.

How do I know if it is rising damp or condensation?

Rising damp usually shows as a tide mark low on the wall with salts in the plaster, and it is there all year. Condensation tends to appear as black mould on cold surfaces, corners and window reveals, and is worse in winter. Our surveyors use calibrated meters and salt analysis to tell them apart.

Is your damp proofing guaranteed?

Yes. Our treatments come with a written guarantee, and for a single premium the guarantee can be protected by an Insurance Backed Guarantee (IBG) for extra peace of mind.

Can I stay at home while the work is done?

In most cases, yes. We work room by room, protect floors and furniture, and keep dust to a minimum. Your surveyor will explain what to expect before work starts.

Do you work on oast houses and weatherboarded buildings?

Yes. We have treated oast houses, weatherboarded cottages and ragstone farmhouses across Kent, including an oast house in Hollingbourne, using methods that suit traditional construction.

Which parts of Kent do you cover?

We cover west and mid Kent regularly, including Sevenoaks, Tunbridge Wells, Tonbridge, Maidstone, Dartford and the Medway towns. Call us to check further afield.

Do you cover my part of Kent?

Our surveyors cover west and mid Kent regularly, including Sevenoaks, Tunbridge Wells, Maidstone and the Medway towns. Towns we visit regularly include Tunbridge Wells, Maidstone, Sevenoaks, Dartford, Cowden, East Malling, Gravesend and Halstead. If yours isn't listed, give us a call and we'll confirm.

Also in Kent

More from Tapco in Kent

Our other specialist services for Kent homes, landlords and businesses.

Damp & Timber Surveys in Kent

Pre-purchase and mortgage surveys. Especially worthwhile for older homes around Sevenoaks and Tunbridge Wells.

Client testimonials

Our living room and hall was badly damaged by a leaking pipe from the flat above. Not only did they do an excellent job repairing it but they dealt with my insurance company who paid me in full. I wouldn't hesitate to recommend them.

Ms F Webster
More kind words

Damp Proofing in nearby counties

Live just outside Kent? We cover the neighbouring counties too.

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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