Roof Cleaning Services: Cost & Options 2026 (UK)
Roof cleaning costs £300–£700 for a typical UK semi or terrace in 2026, rising to £700–£1,200+ for a large detached house or heavy moss growth. The right method matters as much as the price: gentle soft washing and manual moss removal protect the tiles, while high-pressure jetting can strip the surface and force water under the tiles. Here is what each service costs, what a good job includes, and the methods to avoid.
2026 roof cleaning costs
| Service | Typical price (2026) | Notes |
|---|---|---|
| Soft wash + moss removal (semi/terrace) | £300–£700 | Most common job |
| Soft wash + moss removal (detached) | £700–£1,200 | Larger roof area |
| Moss scrape only | £250–£500 | No biocide treatment |
| Biocide / fungicide treatment | £150–£400 | Kills regrowth over months |
| Gutter clear (add-on) | +£60–£150 | Often bundled |
| Scaffold / access (if needed) | +£300–£800 | Steep or high roofs |
Soft washing vs pressure cleaning vs moss removal
Soft washing uses low pressure and a biocide to kill moss, algae and lichen, which then weather off over the following weeks — it is the gentlest, tile-safe method and the one most specialists recommend. Manual moss removal (scraping and brushing) is good for heavy growth and is often combined with a soft wash. High-pressure jetting gives an instant clean look but can erode the tile surface, dislodge granules and drive water under the tiles, so most reputable firms avoid it on older or concrete tiles.
What a good roof clean includes
- Full inspection and photos before and after.
- Moss removal by hand or soft wash, with debris cleared from valleys and gutters.
- Biocide treatment to slow regrowth for months.
- Public liability insurance and safe access (harness, ladder stand-off or scaffold).
Is roof cleaning worth it?
Beyond kerb appeal, clearing moss stops it blocking gutters and valleys and holding moisture against the tiles, which shortens their life. A soft wash with biocide keeps a roof clear for a couple of years. Be wary of anyone pushing an expensive "roof coating" as a cure-all — for most homes a clean and biocide treatment is the sensible spend.
Roof cleaning costs at a glance — 2026
Source: BestBuilders 2026 regional cost model · 519 UK towns
Full 2026 rate card
| Job | Typical cost (2026) | Notes |
|---|---|---|
| Soft wash, per m² of roof | £8–£15 | The usual pricing basis |
| Manual moss scrape only | £200–£450 | No treatment — regrows faster |
| Scrape + biocide, terrace/semi | £300–£700 | The standard job |
| Scrape + biocide, large detached | £700–£1,200+ | Heavy moss adds labour |
| Steep pitch, dormers, poor access | +£150–£400 | Extra access kit and time |
| Gutter clear while access is up | +£80–£150 | Cheapest moment to do it |
| Follow-up biocide (year 2–3) | £100–£250 | Keeps regrowth away |
| Broken tiles found and swapped | £10–£25 each | Agree the per-tile rate first — see roof replacement costs |
Soft wash vs pressure wash vs scrape
Soft washing — low-pressure application of a biocide that kills moss, algae and lichen so weather strips the roof clean over the following weeks — is the method tile manufacturers accept. Manual scraping gets the bulk moss off instantly and pairs well with a biocide finish. High-pressure jetting is the one to be wary of: it strips granules from concrete tiles, opens the surface pores (so moss returns faster) and can force water under the laps. If a firm leads with the pressure washer, keep shopping.
How the job runs (half a day to a day)
- Ridge-to-gutter inspection; broken tiles flagged with photos.
- Bulk moss removed by hand tools from ladders, towers or the eaves.
- Biocide applied roof-wide; it keeps working for weeks after the visit.
- Gutters cleared of the moss that came off (agree this is included).
- Ground and planting rinsed — biocide overspray marks patios.
Choosing a firm: checklist
- Method stated in writing — soft wash or scrape-and-treat, not jetting.
- Public liability insurance that covers roof work at height.
- Photos of the SAME roof before and after, not stock images.
- A per-tile rate for breakages agreed in advance.
- Compare three quotes — prices for identical jobs vary widely between areas.
Red flags
- Door-knockers who “noticed your roof while working next door”.
- The roof-coating upsell: sealants and paints costing thousands with debatable benefit — a clean plus biocide is what the roof needs.
- No mention of protecting gutters and drains from moss sludge.
FAQs
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