Roof cleaning
across Kent

Visible green or black moss on tiles is the most obvious sign. You might also see dark streaking, lichen patches, or notice debris blocking your gutters more frequently. If the roof looks visibly dirty or discoloured, it's worth having it assessed.

Yes, when it's done the right way. We remove moss and lichen physically by hand and apply a biocide treatment rather than blasting the roof with a high-pressure washer. High-pressure cleaning can strip the protective surface from concrete tiles, crack older clay or slate, and force water under the tiles — so we avoid it. Our hand-cleaning method is safe for standard concrete, clay and slate roofs.

A professional clean followed by a biocide treatment typically keeps moss and algae at bay for 3–5 years. How long it lasts depends on your roof's aspect, nearby trees and how shaded it is — north-facing and heavily overhung roofs in Kent regrow faster and may need treating sooner.

Yes — we always recommend combining gutter cleaning with roof cleaning. Roof work dislodges debris that falls into gutters, so cleaning both in the same visit gives the best result and saves cost.