Moss and gutters go together. When moss grows on a roof, pieces fall and wash into the gutters, where they pile up and block the flow of water. Blocked gutters cause damp, overflow and damage to the roofline.
How moss gets into gutters
Rain, wind and birds pull moss loose from the roof, and it collects at the eaves. When moss is cleaned off a roof, the debris falls straight into the gutter unless it is cleared properly. A mat of wet moss in a gutter holds water and can even grow new moss.
What happens when gutters block
Water cannot reach the downpipe, so it overflows over the front edge or backs up under the bottom row of tiles. This can soak the fascia and the rafter ends, stain the walls and cause rot. Heavy wet moss adds weight and can pull gutters away from their fixings.
Keep them clear
Gutters should be checked and cleared at least once a year, and more often under trees. Use gloves, and a ladder only if you are confident, or call someone to do it. Clear moss and leaves out by hand, then flush with water to check that it flows to the downpipe.
Tackle the cause
If moss keeps falling into the gutter, the roof probably needs cleaning. Cleaning the roof and the gutters together is the sensible approach, so the debris does not just fall onto the freshly cleared gutter, and it lets the roofer look at the guttering and fascia.
Check for damage
While clearing, look for leaking joints, sagging runs and rusted brackets.
See our Roof Moss Removal section or call 07766 547309.
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