Damp Proofer in Portsmouth (23)

Living near the coast comes with its perks, but it also means Portsmouth homes are more prone to damp. From Victorian terraces in Southsea to post-war homes in Cosham, damp problems like rising moisture, black mould, or bubbling walls are all too common. Whether it’s a small patch of damp or a full-scale job, don’t let it get worse.

The good news is that Checkatrade can help you find a damp proofing service for your home in Portsmouth. Whether you need rising damp treatment, a full inspection, or someone to repair and re-plaster affected areas, we can help you search and compare tradespeople operating near you. Every damp proofer on Checkatrade is checked before joining, and you’ll see real customer reviews, important details, and what services are offered.

Whatever you need, from damp treatment in Portsmouth to a second opinion from a damp proofer working near you, you can search for it with Checkatrade.

What to expect from hiring a damp proofer in Portsmouth

Damp proofers in Portsmouth deal with everything from small patches of wall damage to full waterproofing of basements.

Common jobs include:

• Chemical damp proof course (DPC) injections
• Tanking basements or cellars
• Applying waterproof membranes or coatings
• Fitting ventilation systems to fight condensation
• Damp surveys to find the root cause

Cost of damp proofing in Portsmouth

On average, damp proofing in Portsmouth costs [pricing[1].Portsmouth.[Damp Proofer].[averagePriceFormatted]]. Prices typically start at [pricing[1].Portsmouth.[Damp Proofer].[lowPriceFormatted]] and can go up to [pricing[1].Portsmouth.[Damp Proofer].[highPriceFormatted]] or more depending on the type of job required.

The exact price depends on your property type, required treatment method, and how bad the problem is. If you already know the services you need, price up your project for free with our Job Value Estimator tool.

Below are some average costs for popular damp proofing services in Portsmouth.

Emergency damp proofing service: [pricing[2].Portsmouth.[Emergency Damp Proofing].[averagePriceFormatted]] on average, with prices typically starting at [pricing[2].Portsmouth.[Emergency Damp Proofing].[lowPriceFormatted]] up to [pricing[2].Portsmouth.[Emergency Damp Proofing].[highPriceFormatted]]

Damp investigation: [pricing[3].Portsmouth.[Damp Investigating].[averagePriceFormatted]] on average, with prices typically starting at [pricing[3].Portsmouth.[Damp Investigating].[lowPriceFormatted]] up to [pricing[3].Portsmouth.[Damp Investigating].[highPriceFormatted]]

Mould control: [pricing[4].Portsmouth.[Mould Removing].[averagePriceFormatted]] on average, with prices typically starting at [pricing[4].Portsmouth.[Mould Removing].[lowPriceFormatted]] up to [pricing[4].Portsmouth.[Mould Removing].[highPriceFormatted]]

Dry rot treatment: [pricing[5].Portsmouth.[Dry Rot Repair].[averagePriceFormatted]] on average, with prices typically starting at [pricing[5].Portsmouth.[Dry Rot Repair].[lowPriceFormatted]] up to [pricing[5].Portsmouth.[Dry Rot Repair].[highPriceFormatted]]

Damp surveys: [pricing[6].Portsmouth.[Damp Survey Costs].[averagePriceFormatted]] on average, with prices typically starting at [pricing[6].Portsmouth.[Damp Survey Costs].[lowPriceFormatted]] up to [pricing[6].Portsmouth.[Damp Survey Costs].[highPriceFormatted]]

Rising damp control: [pricing[7].Portsmouth.[Rising Damp Control Costs].[averagePriceFormatted]] on average, with prices typically starting at [pricing[7].Portsmouth.[Rising Damp Control Costs].[lowPriceFormatted]] up to [pricing[7].Portsmouth.[Rising Damp Control Costs].[highPriceFormatted]]

Condensation control: [pricing[8].Portsmouth.[Condensation Control Costs].[averagePriceFormatted]] on average, with prices typically starting at [pricing[8].Portsmouth.[Condensation Control Costs].[lowPriceFormatted]] up to [pricing[8].Portsmouth.[Condensation Control Costs].[highPriceFormatted]]

What’s included in a typical quote:

• Full damp survey
• Labour and materials (e.g. chemical injection or membrane)
• Prep work (like plaster removal)
• Post-treatment clean-up or finish

Extras to check for:

• Re-plastering or redecorating
• Repairs to render, gutters, or pipework
• Basement ventilation or drainage systems

Always ask your damp proof specialist if they're covered by insurance and if their work comes with a guarantee.

Damp proofing in Portsmouth: Homeowners vs renters

Homeowners:

• If you own the property, you’re usually responsible for sorting out damp, no matter whether it’s internal condensation or structural issues like rising damp. You don’t need planning permission for most treatments, but listed buildings or conservation areas may need special consent.

• A full damp survey can also help support insurance claims or mortgage paperwork.

Renters:

• Landlords are legally responsible for fixing serious damp and mould problems under the Homes (Fitness for Human Habitation) Act.

• If you're renting in Portsmouth and spot signs of damp:

  1. Report it to your landlord or letting agent
  2. Keep photos and written records
  3. Contact your council if no action is taken

Emergency damp proofing in Portsmouth

Some damp issues can’t wait. Signs of emergency damp problems include:

• Large patches of mould or wall bubbling
• Water pooling in basements or floors
• Leaks after heavy rain
• Health concerns from black mould

If you're facing urgent issues, use our search tool find emergency damp proofing services in Portsmouth. Many offer same-day callouts and quick diagnoses to stop damage in its tracks.

In a rush? Request a Quote directly for a quick callback from our rated tradespeople.

Find the right damp proofing service in Portsmouth

Checkatrade lists Portsmouth damp proofing services who can help with:

• Chemical damp proof courses
• Waterproofing basements and cellars
• Treating rising or penetrating damp
• Fitting damp proof membranes
• Condensation and ventilation solutions
• Home damp surveys
• Property inspections for insurance or mortgage

All our tradespeople are fully checked, with insurance and reviews listed. Book through us and your job could be covered by the Checkatrade Guarantee of up to £1,000 for 12 months (T&Cs apply).

Enter your postcode to get started.

Find tradespeople for the job you need in Portsmouth

• Find damp surveys in Portsmouth
• Find dry rot treatment in Portsmouth
• Find penetrating damp treatment in Portsmouth
• Find timber treatment in Portsmouth

Find damp proofers in the Portsmouth area

• Find damp proofers in Southsea
• Find damp proofers in Gosport
• Find damp proofers in Hayling Island
• Find damp proofers in Portchester
• Find damp proofers in Havant
• Find damp proofers in Fareham
• Find damp proofers in Lee-on-Solent
• Find damp proofers in Waterlooville
• Find damp proofers in Cowplain
• Find damp proofers in Hampshire