I cleaned the moss off our kitchen extension roof a few weeks ago. Waited till it was real dry then had at it with a stiff brush. Roofer told me it comes off easiest either when it’s bone dry or soaking wet. Didn’t fancy climbing on a wet roof.
I cleaned the gutters along my garage the other day. It was like an exhibit showing how moss turns into peat bogs. Definitely time to get the gutters on the house cleared, as I can't imagine they're any better.
Yep, that's what I thought. The main issue is how to get rid.