How Much Does Roof Cleaning Cost in 2026? (UK)

Roof cleaning cost breakdown 2026

As a guide for 2026, a terraced roof costs around £250–£450 to clean, a semi-detached £400–£700, and a detached house £600–£1,200. Priced by area that is roughly £5–£15 per m². Heavy moss removal, biocide treatment and gutter clearing are often added on top, and scaffolding for a steep or high roof adds several hundred pounds.

Soft washing vs manual moss removal

Soft washing uses low-pressure sprays and a biocide to kill moss, algae and lichen, then lets the roof weather clean — gentle on tiles and long-lasting. Manual moss removal scrapes and brushes the moss off for an instant result, usually followed by a biocide. Manual work costs a little more for the labour but gives immediate kerb appeal; soft washing is kinder to older tiles.

What drives the price

The big levers are roof size and pitch, how much moss and algae have built up, access (whether scaffolding or a cherry picker is needed), the method chosen, and any extras such as gutter clearing or applying a protective biocide. North-facing and tree-shaded roofs grow moss fastest and cost more to keep clean.

How to budget and compare quotes

1. Measure the roof area

Work out the rough roof area in m² — it is the main driver of the price.

2. Choose the method

Decide between soft washing and manual moss removal so every quote prices the same job.

3. Factor access and scaffolding

Steep, high or awkward roofs need safe access — make sure quotes include it rather than adding it later.

4. Get three like-for-like quotes

Compare on the same method, moss removal and biocide so you judge value, not just headline price.

FAQs

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