Roof cleaning in Gloucestershire — soft washing & moss removal, guaranteed for two years.

No. Welsh slate, Cotswold stone and old clay tiles get hand-scrape and biocide only — pressure on those will damage the surface. Modern interlocking concrete tiles can take a controlled pressure-wash where it's the right tool. The biocide is what stops the moss coming back, regardless of which method we use to remove the bulk.

Up to two years, often longer, because the biocide we apply keeps killing fresh spores after we've left site. Pressure-washing on its own gives you a clean roof for about a season — the moss is back the following autumn because the underlying spores are still on the tiles. A proper biocide treatment is the difference between scraping the surface and treating the cause — see how to get rid of roof moss permanently.

It depends on the size of the roof, the tile type and the access — which is why every quote starts with a free survey rather than a number over the phone. Most roof cleans are £550–£950, with larger or more difficult roofs above that. There's no deposit and no obligation; you get a written quote the same day and only pay once the job's done and you're happy. The free gutter clean and biocide are included in every roof clean, not added as extras. For what affects the price, see our roof cleaning cost guide.

Yes, when applied properly. We use approved biocides at manufacturer-specified dilutions, applied in dry conditions so the active ingredient bonds to the tile rather than running off. Pets are kept indoors during application and for an hour after; planted borders are sheeted and watered down before and after. We've never had an issue with garden ponds or wildlife in years of doing this. More detail: is roof cleaning safe?

For most jobs, no. We work from a ladder or scaffold tower with a long-reach lance, which means no concentrated weight loading on tiles and no boot scuffs on ridges. On steeper or more complex roofs we use a roof ladder hooked over the ridge to distribute load safely. We'll tell you in advance which method we're using on your property and why.

All of Gloucestershire — Gloucester, Cheltenham, Stroud, Tewkesbury, Cirencester, the Forest of Dean and the surrounding villages, plus over the border into parts of Worcestershire. Same pricing across the catchment, no extra travel charge. If you're not sure whether we cover you, send your postcode and we'll confirm.

No roof stays clear forever — spores are always airborne — but treating the cause keeps it clear for years not months: we scrape or soft-wash the moss off, then apply a biocide that carries on killing spores for up to two years. Pressure-washing alone just removes what you can see — it's back next autumn. Biocide (plus, on the right surfaces, a sealant) is the longest-lasting answer — more on getting rid of roof moss permanently.

Spring (March–May) and early autumn are ideal — dry enough for the biocide to bond, and it sets the roof up before the damp months when moss grows fastest. We clean year-round, though; the biocide works whenever it's applied in dry conditions. See our guide to the best time of year to clean a roof.

Depends on the tile. Modern interlocking concrete tiles can take a controlled low-pressure wash where it's the right tool; Welsh slate, Cotswold stone and old clay should never be pressure-washed — it strips the surface, cracks tiles and forces water underneath. On those we hand-scrape and treat with biocide. We always tell you the method first — more in is roof cleaning safe?