Roof Moss Removal › Cwmbran › Guide
Moss does not simply disappear when it is brushed off a roof. It comes away in clumps with grit and old tile granules, and all of it heads for the lowest point, which is your gutter. This guide explains what we do to catch it, clear the gutters and check that water leaves properly afterwards.
Where the moss ends up
Brushed moss falls down the slope and into the gutters, valleys and sometimes onto paths and lower roofs. On the long, low-pitched rows around Pontnewydd and Croesyceiliog, a large run of roof can feed one gutter. Cleared debris is bagged and taken away, not left on the ground. If the gutters are not dealt with at the same time, the first heavy rain washes the remaining debris into the outlets and blocks them, and the roof is cleaner but the water has nowhere to go.
How we protect the gutters while we work
We work from the top of each slope down, collecting the loose moss as we go instead of letting it all pile into the gutter. Where a gutter is badly choked we clear it first, so it can take what comes off. We also check the outlets and downpipes, because a blocked pipe at the bottom of a clean gutter still overflows.
- Work down the slope and collect debris as we go
- Clear the gutter runs and the outlets
- Check the downpipes and the joints between gutter lengths
- Remove everything from site rather than leave it on the ground
Valleys and flashings
Valleys carry the water from two slopes into one channel, so they clog fastest and overflow worst. We clear them fully down to the lining so the water runs freely again. A valley that drains freely is the single biggest gain from the job. Once the valley is bare we can see the lead or flashing beneath it and tell you whether it is sound, because moss often hides cracks and lifted edges.
What we look for once the water runs again
After clearing, we look at how the water leaves the roof: whether gutters fall towards the outlets, whether joints are weeping and whether brackets have pulled away under the weight of wet moss. Sagging gutters hold standing water and fill with silt again within weeks, so if the fall is wrong we tell you rather than leave it.
Keeping the gutters clear afterwards
Treatment slows regrowth, but trees, leaf fall and shade still feed the gutters, especially around Llanyrafon, Llantarnam and the older planted estates. A yearly look at the gutters is inexpensive insurance. Trimming back close branches also helps a great deal. From the ground, watch a heavy rain: water coming over the front edge, or running down a wall behind the gutter, is the sign to call us.
Need roof moss removal in Cwmbran? See our roof moss removal in Cwmbran page, or call 07766 547309.
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Common Questions
Will you clean the gutters when you clear the moss?
Yes. Moss and grit wash down as it is removed, so clearing the gutters and valleys is part of the job. Clearing the roof and leaving the gutters full would simply move the problem downhill. Call us and we will take a proper look at your roof.
Why do my gutters overflow after the roof is cleaned?
Usually a blocked outlet or downpipe, or a gutter that sags and holds water. We check the fall and the downpipes after clearing and tell you what is causing it. Call us and we will take a proper look at your roof.
Do old gutters survive moss clearing?
Mostly, but heavy wet moss can pull brackets loose and brittle sections can crack. We check them as we go and point out anything that needs repair before it fails. Call us and we will take a proper look at your roof.
Get a Quote in Cwmbran
Tell us what the roof is doing in Cwmbran and we will look at it. Call 07766 547309, message us on WhatsApp or use the form below.