DOFF Chemical Cleaning in Sidmouth
Stonehealth DOFF system — pressurised steam up to 150°C for listed and heritage stone. We work all over Sidmouth and the surrounding Devon area — The Esplanade, Sidford, Sidbury and the towns between.

The Moore & Franks approach in Sidmouth
Sidmouth's Regency villas and cob-and-render cottages sit right in the path of off-sea damp, and the genteel painted frontages along the front green over quickly. DOFF chemical cleaning is built for exactly this — low-pressure superheated steam that clears algae and lichen from delicate render and historic stone without scarring it. We respect the town's conservation feel and won't take a pressure lance to anything that can't handle one. Family-run from Exeter, twenty-five years of coastal work behind us, fully insured to £5m. We'll give you a clear read on whether DOFF or soft washing suits your particular frontage.
Woolbrook and Sidford's 1930s semis live in the shadow of the wooded slopes below Peak Hill and Salcombe Hill, and their shaded, rendered walls hold moss and lichen thickly where the hillsides wash grit and leaf litter down onto them. It's these render and masonry faces we steam-clean, lifting years of growth by heat at low pressure without the surface being battered or driven full of moisture, important on walls that already struggle to dry in the shade.
Out at the Bowd and toward Sidbury, the newer render homes take their share of greening too, just on modern coatings that want a different approach from the painted cottages in the centre. Modern silicone and K-Rend often respond better to a soft wash than to full DOFF heat, so we'll advise the right method before quoting. Where the coating suits steam, temperature clears the marine-fed algae without forcing damp behind a wall built to stay sealed.
Sidmouth's settled, older population means a lot of well-kept frontages where owners want the job done gently and done right, not blasted. Along the Esplanade and Fore Street the constant salt deposit keeps painted render damp and green, and an optional biocide top-coat after a steam clean holds the growth back longer on those exposed seafront faces. We suggest it only where the exposure genuinely earns the extra.
Our Sidmouth customers are typically within 25 minutes of our Exeter base. We cover the wider EX10 postcode area and the surrounding villages (The Esplanade, Sidford, Sidbury, Woolbrook, Peak Hill, Salcombe Hill, Connaught Gardens).
A clear, repeatable process.
No surprises, no upsells. The same method every job — that's how you get the same result every time.
- 01
Site visit & permits
We confirm listed status, conservation consent and method statement before quoting.
- 02
Test patch
Discrete test patch agreed with you (and conservation officer if relevant) before main work.
- 03
DOFF cleaning
Stonehealth DOFF unit deployed across the agreed elevations.
- 04
Photographic record
Before/during/after photos for the file — useful if conservation reporting is required.

Frequently asked questions
Quick answers to the questions we get asked the most. If yours isn't here, drop us a line — we reply same day.
DOFF work is quoted free after a look, with no fixed price list. In Sidmouth the main cost factor tends to be how delicate the surface is — Regency painted render and historic stone on the seafront villas need slower, gentler steam work, which takes more time than a plain rendered gable.
The whole town and its edges — the Esplanade and Fore Street, Sidford, Sidbury, Woolbrook and Connaught Gardens, up under Peak Hill and Salcombe Hill. Sidmouth sits about twenty-five minutes from our Topsham base, an easy run down the coast for us.
Yes. It cleans with heat rather than pressure, so it lifts algae and lichen off delicate painted render, cob and historic stone without scarring them. On genuinely fragile heritage fabric we agree a discreet test patch with you before treating the full elevation.
Get in touch by phone or message and we'll reply the same day, then arrange a visit to quote. We work Monday to Friday, eight until five, and everything is priced in writing before any work starts, so there are no surprises.
We also cover doff cleaning in
Free, no-obligation quote within 24 hours.
Send a couple of photos or book a site visit — fixed price in writing before any work starts.
