
£100/session
£375/one off
£600/session
from £50/session
As one of the larger towns in Essex, Chelmsford has a real mix of roof ages and styles, many of which build up moss, algae, and grime over time. A roof cleaner will typically use a softwash treatment, which lifts this growth gently rather than risking damage from high pressure jet washing.
Costs vary with the size and pitch of the roof, how accessible it is, and whether a manual scrape and biocide treatment is sufficient or a full steam clean is needed. Comparing a few quotes side by side is the best way to judge fair pricing.
Bark also lists roof cleaners covering South Ockendon, Basildon, Southend, and Colchester, useful if you're comparing options more widely.
Bark's data suggests roof cleaning in Chelmsford typically costs £400 to £1,000 per job, roughly £8.50 to £14 per square metre, with the total shaped by roof size, access, and whether it's a manual scrape and biocide treatment or a full steam clean.