best way to clear moss?

Our friend has recently had her chalet bungalow roof de-mossed by a relative of hers who does this sort of thing. I think she said she paid around. £1,200 but it involved a lot of brushing and chemicals. Took more than one visit though but she’s very pleased with it. I think she said it had to be treated first to kill/neutralise the moss before the brushing /scraping otherwise the spores will just spread.
W. T. F?

I did mine with a bass broom and a couple of hours one nice day.

Pass my number to your friend.
 
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I notice some tiled roofs attract moss and others don't, even though facing the same way. Do some tiles incorporate copper or other moss-preventer ?
 
I notice some tiled roofs attract moss and others don't, even though facing the same way. Do some tiles incorporate copper or other moss-preventer ?

I would think it is more to do with how the surface texture of the roof tiles allows a coating of gunge to form / bind on which the moss can grow.
 
That's likely. However, in my experience the moss generally gains a foothold in the gaps between tiles. It would be useful if the tile material had some ingredient which leached out slowly to prevent moss growth at the tile edges. I daresay there'd be some environmental objection to that, though! :rolleyes:
 
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That's likely. However, in my experience the moss generally gains a foothold in the gaps between tiles. It would be useful if the tile material had some ingredient which leached out slowly to prevent moss growth at the tile edges. I daresay there'd be some environmental objection to that, though! :rolleyes:

In my opinion, it's subject to two things - the porosity of the roofing material and how much direct sun the surface receives. Once moss gains a foothold it can spread dramatically. The north/west facing side of my clay tile roof suffers some moss growth in the winter, in the summer, it dries out and dies off.

My original flat asbestos roof, used to really suffer from it, mostly at the panel joins, obstructing corrugations and the flow of water off the roof. It would sometimes, if rained heavily, flow inside. Since replacing it with a galv, painted metal roof, there has been no moss on it at all.
 

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