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SimonM
user69121
I found the copper wires only cleared a few rows of tiles
We have great moss growing conditions up here, so I used to scrape it off and then spray, but just spraying works well enough in the long term.
The roof on the right was sprayed twice a couple of years ago. Once to kill it off and a few months later to get the bits that had survived.
The moss clumps fall off over a few months, so keeping on top of clearing out the gutters is needed.
We need to keep on top of the gutters anyway, as the roof is currently covered in pine needles.
https://www.everbuild.co.uk/product/sika-mould-buster/
In a big garden sprayer and long extendable pole so I don't need to go on the roof again.
It's probably a bit late in the year for spraying it, as it really needs to soak in and dry before the next rain.