Is moss on your roof damaging your gutters?
By Charlie · Local gutter cleaner · 29 October 2026 · 3 min readYes — moss breaks off the roof in rain and wind, collects in gutters and quickly forms a sponge-like blockage. Regular gutter cleaning stops it causing overflow.
Why moss is a gutter problem
Moss holds water and grows thickly on north-facing and shaded roofs. Clumps wash down into the gutter, where they soak up water and block downpipes.
What to do
Keep gutters clear so moss can't build up. If the roof itself is heavily covered, a roof moss treatment can slow regrowth. Avoid high-pressure washing roof tiles, which can damage them.