Brooklyn1 writes:

Dan.Espen wrote:

I have roof moss and Roundup just doesn't seem right, maybe I'll
try the vinegar there. I tried dilute bleach and got a subdued
reaction from the moss.

It's very easy to get rid of roof moss, remove whatever is shading the
roof, then spray with bathroom tile mildew remover... if you do not
remove whatever is shading the area the moss will come right back...
I'd not wait too long before rectifying your problem either, moss
indicates a moisture problem, your roof will soon be leaking as the
roofing and sheathing beneath will be ruined, and home owner insurance
will not cover your neglect.

Well, the shade can't be cured. Neighbors huge trees.
I know they won't remove them. It's pretty shady anyway, as the house
faces directly south and theses are in the back.

If find it odd that you think a fungicide will work on moss.
Not really the same thing.

Thanks for the pointers on the urgency. I know I have to do something.

--
Dan Espen