Damp Proofer in Swansea (5)

The cost of damp proofing in Swansea can vary depending on the size of the affected area, the type of damp, and the treatment required.

On average, here's what you can expect:

• Damp proofing cost per metre: £50–£75
• Damp proof course (DPC): £500–£5,000
• Damp proofing external walls: £750–£4,000
• Cellar/basement damp proofing: £100–£200 per sqm
• Injection damp proofing: £1,000–£5,000
• Chemical damp proofing: £750–£3,000

Other factors include the severity of the damp, the age and layout of your property, and accessibility.

For the most accurate quote, speak to damp proofers covering your local Swansea area, and ask for a full damp survey.

Damp proofing is a way to protect your home from unwanted moisture. Damp proofing involves using specialist equipment, materials and treatment to stop damp from spreading through walls, floors or ceilings.

Damp proofing aims to prevent water from entering your homes structure, which can lead to unwanted mould, damage and decay within your property.

There are different types of damp, all of which need its own treatment. The most common types of damp in the UK are:

• Rising damp
• Penetrating damp
• Condensation

Common damp proofing methods to treat these kinds of damp include:

• A damp proof course (DPC): A layer of waterproof material that's often injected into walls, blocking moisture from rising from the ground
• Damp proof membrane (DPM): A plastic sheet or coating that forms a barrier against moisture, used in walls, floors and basements.
• Tanking systems: Waterproof coatings applied to basement walls to keep water out
• Ventilation systems: For treating condensation by increasing airflow

A professional damp survey in Swansea usually costs between £150 and £350.

Some local damp proofing companies near you may offer a free initial assessment, especially if you're likely to go ahead with treatment.

A full survey will pinpoint the cause of damp, assess any structural risk, and outline your best treatment options.

Yes, especially if you’re buying a property or spotting signs like mould, musty smells, or stained walls. A damp proof survey in Swansea gives you a clearer picture of what’s going on, so you don’t end up paying for unnecessary work or missing underlying issues.

It’s also a must if you need official paperwork for insurance or mortgage purposes.

Rising damp tends to show up as damp patches or "tide marks" about a metre from the floor.

Other signs include peeling paint or wallpaper, crumbling plaster, or rotting skirting boards.

A damp survey in Swansea can confirm if it's rising damp or something else like condensation or penetrating damp.

Most damp proofing treatments in Swansea can be completed in anything from a few days to a couple of weeks.

Here’s a rough guide:

• Injection damp proofing (for rising damp): Usually takes 2–7 days, depending on how much wall needs treating.
• Tanking or waterproof coatings (often for basements): Typically 5–10 days, including drying time.
• Membrane installation (in basements or walls): Around 1–2 weeks, depending on complexity.
• Condensation control (e.g. ventilation upgrades): Often done in a day or two.

Some treatments, like DPC injection, need time to dry out before you can re-plaster or decorate, so while the main job might be quick, allow extra time for drying and finishing.

Your damp proofer in Swansea should give you a clear timescale upfront.

DIY damp proofing kits are available, and ventilation fixes can help with light condensation. But for rising or penetrating damp, it's safer to call in a damp treatment specialist.

Poorly applied DIY treatments often lead to repeat problems and higher costs in the long run.

It's a good idea to find a checked damp proof company near you with the right tools, experience and insurance to get it done right.

1. Survey: A tradesperson visits your property to inspect affected areas and identify the type and cause of damp.
2. Diagnosis: You’ll receive a written report detailing what’s causing the damp and the recommended treatment.
3. Prep: This may include removing plaster, lifting flooring, or sealing rooms to keep dust down.
4. Treatment: Work might involve injecting a damp proof course, installing membranes, tanking walls or applying specialist coatings.
5. Finishing: Once treatment is complete and the area has dried, new plastering or decorating can take place.

• Ventilation: Use extractor fans in kitchens and bathrooms. Open windows regularly.
• Heating: Keep your home consistently warm, especially in colder months.
• Furniture placement: Avoid pushing furniture flush against walls to let air circulate.
• Moisture control: Use a dehumidifier if needed and avoid drying clothes indoors without ventilation.
• Repairs: Fix leaky pipes, cracked render, or damaged gutters promptly

In a flat, damp issues often involve condensation, leaking pipes or penetrating damp from shared walls or poorly sealed windows. Treatments may include improved ventilation, applying damp proof paint, or using a damp proof membrane on affected walls.

If the issue originates from a neighbouring flat or communal space, you may need to involve the building management or freeholder.

In houses, particularly older ones, rising damp is a common issue.

Treatment typically involves installing or renewing a damp proof course (DPC), injecting damp proof cream into brickwork, or applying a waterproof membrane.

For basements, tanking systems are often used. A checked damp proofer in Swansea can recommend the best fix for your home layout and build type.

Not always. Most policies won’t cover damp unless it’s the result of a specific event, like a burst pipe.

Insurers often view damp as a maintenance issue. Check your policy wording or speak to your insurer for clarity.

If you’re in doubt, it's a good idea to contact a damp proofer in your local Swansea area and ask them to write a report to help support your case.

Let your landlord or letting agent know as soon as you spot any signs. Under the Homes (Fitness for Human Habitation) Act, landlords are responsible for tackling serious issues like damp and mould.

If they don’t act, you can contact your local council. Taking photos and keeping written records of your complaint is a good idea.

As a landlord, it’s your legal responsibility to provide a safe and habitable home. If tenants report damp, act quickly.

Arrange a professional damp survey to assess the cause, then hire a checked damp proofing contractor near Swansea to carry out any necessary work. Keep records of inspections and repairs to avoid disputes.

Building regulations require that all new builds and extensions in Swansea have appropriate damp proofing measures to prevent rising damp and moisture ingress.

If you’re altering structural walls, converting basements or replacing DPCs, your contractor may need to comply with Part C of the Building Regulations. It’s best to hire a damp proofing contractor who understands local rules in Swansea and can ensure compliance.

Most damp proofing work in Swansea doesn’t require planning permission.

However, if your property is listed or in a conservation area, you may need special consent. Always check with your local authority or ask your damp proof contractor to advise you.

It’s a smart move. If buyers suspect damp during a viewing or get flagged by their own survey, it could affect your sale or lead to price renegotiations.

Getting a damp survey in Swansea before listing your home shows transparency and helps build buyer confidence. You’ll also be better prepared for any work that needs doing.