Damp surveys in Cardiff

Damp work in Cardiff
Cardiff

Damp in Cardiff

Yes. Damp Specialist surveys and treats rising damp, rain penetration and condensation in Cardiff. Houses and flats here are covered on the same terms as the rest of the UK. We do not treat mould or a plumbing leak as a damp proof course. Request a quote with the form or WhatsApp.

The bay and the Victorian inner city are brick and stone, with cavity suburbs further out. Lower-ground rooms and streets that were raised later bridge the damp proof course.

Driving rain is the main penetrating-damp load, on stone and brick and on rendered elevations. Valley terraces on slopes wet at sills and at the base where paths have been raised. Coastal towns add salt to already damp masonry. We do not treat a rain-stained wall as rising damp because the mark is low.

Checklist

What the survey is looking for

1

Outside the wall

  • Ground levels against the damp proof course
  • Gutters, downpipes and overflow marks
  • Pointing, render, sills and flashings
  • Raised paths, steps and flower beds
2

On the plaster

  • Height of the mark, and whether it is a tide line
  • Salts and blown plaster
  • Patches that follow rain
  • Mould on cold corners rather than on the masonry
3

In the rooms

  • Extract fans in kitchens and bathrooms
  • Clothes dried indoors
  • Furniture tight to outside walls
  • A musty smell with no tide mark
4

Before any product

  • Name the damp type from the readings
  • Say what is a leak, not a damp proof course
  • List what this visit will not treat
  • Price the repair that matches the cause

What the visit checks in Cardiff

Ground levels, rain on the weather wall, and winter mould are read against that construction. The note names rising damp, penetrating damp or condensation before a product is specified.

What is not in the treatment price

A plumbing leak, a whole-roof replacement, and decorating a wall that is still drying are separate. If the survey in Cardiff finds them, they are listed, not folded into a damp proof course.

Services

Work we carry out in Cardiff.

Expert Damp Surveys & Diagnosis

Advanced moisture investigations that find the source before any treatment is specified.

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Rising Damp Specialist Treatment

Targeted treatment where groundwater is travelling up through masonry.

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Penetrating Damp Solutions

Rainwater getting through roofs, walls, pointing, and failed details.

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Condensation Management Systems

Humidity, cold surfaces and poor air change, treated as a building problem.

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Structural Drying Services

Controlled drying after leaks, floods, or a damp treatment that has left the fabric wet.

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Mould Investigation & Remediation

Find the moisture that is feeding the mould, then clean and treat the growth.

Learn more
FAQ

Damp questions

Rising damp is groundwater in the masonry, usually with a tide mark and salts low on the wall. Penetrating damp is rainwater, often worse after wet weather and at any height, including ceilings and chimney breasts. Condensation is moist room air on a cold surface: streamed windows, mould in corners and behind furniture, worse in winter. A metre on the surface alone does not separate them. The survey uses readings, salts and the outside of the building.

The survey covers the wet rooms and the outside walls that serve them: moisture readings, a note of salts where plaster has failed, ground levels, gutters, pointing and the damp proof course line. Thermal imaging is used when the stain does not explain itself. You get a written damp type and what should happen next. It is a damp survey for treatment, not a valuation and not a full building survey.

The written quote moves with the length and thickness of wall, how much salt-damaged plaster has to come off, access and scaffolding, whether a cavity is bridged, how many wet rooms need extract, and whether a cellar has to be kept habitable. A survey of a flat is not priced like a cellar conversion. We do not publish a single package price because the damp type changes the work.

Wiping mould, running a bathroom extract and stopping clothes being dried in a sealed room can control condensation. Shop injection cream, tanking paint and waterproof emulsion do not stop rising damp or rain coming through failed pointing. If the damp type is uncertain, treat the diagnosis as the professional job. The wrong product leaves the wall wet and the new plaster fails.

After a damp proof course or a leak, masonry dries slowly. New salt-resistant plaster and paint wait for moisture readings, often months on a thick solid wall, sooner on a lightly wetted surface. Painting or skim-coating early traps moisture and the mark returns. The treatment record says when decoration is reasonable.

No, if the wall is still being wetted. Damp paint and anti-mould spray hide a stain or kill surface growth for a short time. They do not close a gutter, a bridged cavity, a missing extract or groundwater in the brick. Use them only after the source has been stopped and the wall is dry.

No. A low mark can be a path, a patio or render bridging the damp proof course, a leaking radiator pipe, or plaster that is holding old salts. Rising damp is confirmed when the readings and salts fit groundwater and the other paths have been ruled out. We do not inject a wall on the strength of a tide mark alone.

The damp proof course is a line in the wall that should sit above outside ground level. Soil, a new patio, render, a ramp or debris in a cavity can connect wet ground to the brick above that line. The stain looks like rising damp. The repair is often to lower the ground or clear the bridge, not to inject a second course.

A wet patch under a bathroom, beside a radiator, or that appears overnight from a sound ceiling is often a plumbing leak. We will say so. Stopping the pipe is plumber's work. We dry the masonry and replace failed plaster once the leak has been stopped. Structural drying does not include the pipe repair.

Where we install a treatment, the guarantee is the one written for that system, up to 30 years for installations that carry that term. It covers the system we fitted. It does not cover decoration, a gutter you still need to clear, a new patio that bridges the wall later, or a leak that started after we left.

Towns in this county

Cardiff

Nearby counties

Newport Bridgend
Quote

Request a survey

Describe the rooms, how long they have been wet, and whether the mark follows rain or cold weather. We reply with a survey time, then a written quote.

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