When we clear gutters on Kent homes, a large part of what comes out isn't leaves — it's moss. Clumps of it, sometimes filling the whole run. If that's what your gutters keep filling with, the gutter isn't really the problem.
The roof is the source
Moss grows on the shaded, damp side of a roof — usually the north and east slopes — and Kent's clay and concrete tiles give it plenty to grip. Every spell of rain washes loose fragments down the tiles, and the gutter is where they end up.
That's why some gutters fill with moss within months of being cleared, while a house across the road stays clear for years. The difference is almost always the roof, not the gutter.
Why it matters more than leaves
Leaves are light and tend to blow along the gutter or wash to the downpipe. Moss is heavy, it holds water like a sponge, and it sits where it lands. A run of moss-filled gutter is constantly wet, which is hard on the brackets and joints, and it blocks downpipes far more effectively than leaf fall does.
It also keeps growing. Moss in a damp gutter will happily carry on living there, which is why you sometimes see it sprouting above the gutter edge.
Breaking the cycle
If your gutters fill with moss every year, the lasting fix is to clean the roof. Once the moss is off the tiles, there's nothing left to wash down, and the gutters drop back to a normal once-a-year clear.
Until then, the gutter needs clearing more often — typically twice a year for a heavily mossed roof — because each clear is only buying a few months.
What we do on the day
We clear the full run by vacuum from ground level, flow-test every downpipe, and photograph the gutter before and after so you can see what came out. If the roof above is carrying the moss that's causing it, we'll tell you honestly — it's better you know than paying for a gutter clear every few months.
The short version
- Gutter moss comes off the roof above, not from nearby trees.
- Moss is heavier and wetter than leaves, and blocks downpipes faster.
- A mossy roof means gutters that refill within months of clearing.
- Cleaning the roof is what breaks the cycle for good.
