Roof cleaning in Cheltenham — moss-free for two years, Regency or Cotswold stone.

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. Cheltenham's damp microclimate and mature tree cover do mean north-facing pitches in shaded plots may green up sooner than south-facing ones. 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.

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.

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 — including a lot of the taller Regency town houses — 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.

Three reasons that matter, in order. Tile and slate life — moss holds moisture against the surface, accelerating freeze-thaw damage and shortening the working life of the roof, which on a Welsh slate Regency villa is a significant lifetime cost. Gutters and downpipes — moss sheds and washes into the gutters, blocking them and pushing water down the wall instead of away from the house, which on rendered or stone facades shows up fast. Insurance and resale — some insurers query roofs visibly covered in growth, and a clean roof is a quiet but real factor in kerb appeal when selling, especially in conservation areas where buyers are paying a premium for character. The cost of cleaning is a fraction of replacing tiles or repointing ridges.

Yes. Tewkesbury roof cleaning is a regular run for us — eight miles north up the M5, same Severn Vale moisture profile, mostly post-war concrete tile and a handful of older Welsh slate properties along the high street. Pershore roof cleaning is the same story across the Worcestershire border. We also cover Bishop's Cleeve, Prestbury, Charlton Kings, Up Hatherley, Hatherley, Benhall, Battledown, Leckhampton, Warden Hill and the rest of the GL50–GL53 footprint. Same pricing across the catchment, no extra travel charge.

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.

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.

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.