
£130/session
from £75/one off
Dark algae streaks and patches of moss are common on roofs that haven't had attention in a few years, particularly on slopes that stay shaded for much of the day. A roof cleaner will usually clear this back using a softwash and biocide treatment, or a full steam clean where growth is more established.
Drier spells in spring or autumn give a biocide treatment the best chance to work properly before rain washes it away, though most roof cleaners will still take on jobs at other times of year.
Ask about their method, confirm insurance for working at height, and get a written quote. Roof cleaners covering Stoke Gifford also usually work across Cheltenham, Gloucester, Cirencester and Tetbury, so compare a few quotes on Bark before choosing.
Bark's data suggests roof cleaning in Stoke Gifford typically costs £400 to £1,000 per job, roughly £8.50 to £14 per square metre. The total depends on roof size, access, and whether it's a manual scrape and biocide treatment or a full steam clean.