On 22/12/2019 17:28, Mr Pounder Esquire wrote:
Bungalow, back end south facing. I was unhappily on the roof about 5 years
ago scrapping and brushing the moss off. The tiles are very rough and are
like steel.
I'd read that stringing a length of copper wire over the ridge kills moss,
so I did it. The moss returned on the back end of the roof, never mind and
******** to it, I'm not going up there again. Since Autumn chunks of moss
have been falling down almost every day. Maybe the copper wire takes time to
work?



I've heard the same re copper wire. I suspect it could be a question of
concentration. One wire on a small roof may do the trick. One wire on a
large roof may help but not cure the problem.

Wet and Forget is another product someone recommended but I've not tried
it.