POSTCODES SM2, SM3

Damp Specialist Cheam

Name: Damp Specialist Banstead
Address: SBC House, Restmor Way, Wallington, SM6 7AH, GB
Telephone: 020 8239 3335

Surveys and repairs for Cheam Village, North Cheam and the conservation area's period properties.

Cheam contains some of the oldest domestic buildings in the borough alongside extensive 1930s suburban development, and the difference matters enormously when diagnosing damp. Timber-framed and solid-wall buildings in and around Cheam Village need breathable, moisture-tolerant repairs; the inter-war semis spreading north and west need attention to cavities, ventilation and thermal bridging instead.

We are often asked to Cheam for second opinions after a homeowner has been quoted for a full chemical damp proof course. In period property that recommendation is frequently wrong — hard cement render, modern gypsum plaster and impermeable paints are far more likely to be trapping moisture in a wall that was designed to breathe.

Local property types

Cheam Village and the conservation area hold listed and locally listed buildings including timber-framed and early brick construction, where lime mortars and breathable finishes are essential. Radiating outwards are large numbers of 1930s bay-fronted semis and detached houses with cavity walls, plus post-war and modern infill development around North Cheam and the A24 corridor. Many of the larger Cheam houses have cellars and integral garages, both of which introduce their own moisture routes.

Neighbourhoods and landmarks we cover

✓ Cheam Village and the conservation area
✓ Whitehall, the timber-framed Tudor house
✓ Nonsuch Park and Nonsuch Mansion
✓ Cheam station and Station Way
✓ North Cheam and the Priory Retail corridor

Local knowledge

Common damp problems in Cheam

Cement render on breathable walls

Hard renders and plastic paints applied to older Cheam walls trap moisture, producing damp patches that appear to be rising damp but are actually evaporation blocked at the surface.

Cellar and sub-floor damp

Larger period houses in Cheam often have cellars or deep sub-floor voids with blocked airbricks, leading to musty smells and timber decay at joist ends.

Condensation in 1930s bay-fronted semis

Deep bays with large glazed areas create cold surfaces, and mould commonly develops in the bay corners and behind curtains during winter.

Extension junction leaks

Rear extensions built against original walls frequently leak at the abutment flashing, showing internally as a damp band at ceiling level.

Practical local advice

If you own a period property in the conservation area, ask for lime-based repairs rather than cement — the wrong material causes more damp than it cures.
Check that sub-floor airbricks around your property are clear of soil, planting and paving.
Inspect the flashing where a rear extension meets the original wall after any storm; it is the most common local leak point.

Cheam FAQs

Do you have experience with listed buildings in Cheam?

Yes. We use breathable, conservation-appropriate materials and can liaise with the council where consent is required.

I have been quoted for a full DPC — should I get a second opinion?

Almost always worth it, particularly in older Cheam property where the real cause is often render, plaster or drainage.

Do you cover North Cheam as well?

Yes, we cover the whole of Cheam, North Cheam and the surrounding SM2 and SM3 roads.

Nearby areas

Sutton Worcester Park Ewell Banstead Epsom

Book a damp survey in Cheam

Book an independent survey and get a written answer — including if no damp proofing is needed.

Call 020 8239 3335 Book a survey