
from £90/session
£50/session
£350/session
from £49/one off
Moss and algae don't announce themselves until a roof already looks patchy or a gutter starts overflowing after rain. In Letchworth, older tiled roofs and anything shaded by nearby gardens tend to show green growth first. Getting a roof cleaner in before it spreads keeps the tiles in better condition for longer.
Softwashing is usually the preferred method now, since it treats moss and algae at the root rather than just blasting it off, which can loosen tiles.
Expect to pay £400 to £1,000 per job, working out at roughly £8.50 to £14 per square metre. A steep roof, difficult access, or a full steam clean rather than a scrape and biocide treatment will push the price towards the higher end.
Bark connects homeowners in Letchworth, and further out towards Hitchin and Baldock, with roof cleaners who can quote on the actual job rather than a generic estimate. Post the details once and compare what comes back.
Bark's data suggests roof cleaning in Letchworth costs £400 to £1,000 per job, working out at roughly £8.50 to £14 per square metre. The exact figure depends on the size of the roof, access, and whether it's a manual scrape and biocide treatment or a full steam clean.
Softwashing uses a low-pressure application of cleaning solution to kill moss, algae and lichen without disturbing the tiles. Pressure washing can strip granules and crack older tiles, so most professionals now avoid it on pitched roofs.
Yes. Moss holds moisture against the tiles, which can lead to cracking in cold weather and, over time, water finding its way underneath. Clearing it early is usually cheaper than repairing the damage it causes.
Most roof cleans are finished within a day, though larger properties or heavily mossed roofs needing a full steam clean can take longer.