Moss retains moisture against your tiles, accelerates freeze-thaw damage, blocks valleys and gutters, and voids many tile manufacturer warranties if left untreated. We remove moss safely across Farnham and apply biocide treatment to prevent regrowth for 3–5 years.
We use a dry soft-brush method — not high-pressure washing, which damages tiles and forces water under the surface. The correct process removes moss without causing additional damage.
Manual dry brushing removes moss, lichen and debris without damaging the tile surface or forcing water into the roof structure. Safe for clay, slate and concrete tiles.
Included in treatmentPost-removal biocide spray kills remaining spores and inhibits regrowth for 3–5 years depending on aspect and tree cover. We use a soft-wash formulation safe for surrounding plants.
Included in treatmentRemoved moss falls into valleys and gutters. We clear all debris from valleys, gutters and downpipe inlets as part of the treatment to prevent blockages.
Included in treatmentWe photograph and note any tile or flashing issues spotted during the treatment — a useful by-product of having someone on the roof taking a close look.
Free with every jobNorth-facing roof planes in Farnham stay damp longer after rainfall. This is the most common side to see heavy moss colonisation.
Properties in Wrecclesham, Rowledge and Tilford with overhanging trees see moss establish significantly faster due to shade and debris.
Pre-1950s clay peg tiles on Farnham's Victorian and Edwardian stock have a more porous surface than modern tiles — moss takes hold more readily.
Moss debris washes into roof valleys and causes blockages. Left untreated, standing water in blocked valleys is a primary cause of roof leaks in Surrey.
| Property Type | Typical Cost | Includes |
|---|---|---|
| 1–2 bed bungalow or flat roof | £250–£400 | Brush, biocide, gutter clear |
| 3-bed semi-detached | £350–£550 | Brush, biocide, valley clear, report |
| 4-bed detached | £500–£800 | Full treatment, all slopes |
| Large detached / complex roof | POA | Survey and quote provided |
Price depends on roof area, pitch and access. Scaffolding not normally required for moss treatment.
Farnham sits in a natural bowl where the Wey valley meets the North Downs. Properties on the valley floor in the town centre and Wrecclesham retain morning dampness longer than elevated properties on the Bourne ridge — this translates directly to faster moss growth on lower-lying roofs.
The clay peg tiles common on pre-1950s Farnham properties around Hale Road and Upper Hale are particularly susceptible. Their surface texture provides ideal purchase for moss spores, and once established, moss can work under tile edges and cause cracking in a single hard winter.
High-pressure washing blasts moss spores across the roof, damages tile surfaces, forces water under the tile lap and can dislodge pointing. It's quick but causes more problems than it solves. We never use it.
"Roof was completely green. They spent half a day on it, cleared the gutters and valleys too. Two years on and barely any regrowth. Money well spent."
"They spotted a loose ridge tile while doing the moss removal and fixed it the same day. Would never have known about it otherwise. Great service."
Not if done correctly. We use a dry soft-brush method that removes moss without damaging the tile surface. High-pressure washing — which some companies use — can crack tiles and force water into the roof structure. We never use it.
Biocide treatment typically inhibits moss regrowth for 3–5 years. Properties with heavy tree cover or north-facing slopes at the lower end of that range. We recommend re-treatment every 4–5 years as part of a roof maintenance schedule.
In most cases no. Moss removal is carried out from the ridge down using long-handled brushes and soft-wash sprays that can be applied from ladder or roof edge access. Very large or complex roofs may need a tower scaffold — we'll advise at the quote stage.
Yes — indirectly. Moss retains moisture against tiles, accelerating freeze-thaw erosion. More significantly, moss debris washes into valleys and gutters, causing blockages that lead to water backing up under tiles. Many autumn leak calls in Farnham trace back to moss-blocked valleys.
Local Farnham roofers. Honest pricing, written quotes, 10-year guarantee on all work.
0125 244 7622 📞 Call Now — Free Quote