Damp Proofer in Portsmouth (26)

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 £1178. Prices typically start at £691 and can go up to £2048 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: £1283 on average, with prices typically starting at £764 up to £2035

Damp investigation: £203 on average, with prices typically starting at £126 up to £325

Mould control: £956 on average, with prices typically starting at £534 up to £1721

Dry rot treatment: £1454 on average, with prices typically starting at £833 up to £2439

Damp surveys: £177 on average, with prices typically starting at £119 up to £264

Rising damp control: £2416 on average, with prices typically starting at £1698 up to £3694

Condensation control: £758 on average, with prices typically starting at £85 up to £2579

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).

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