We have a lot of moss on our roof. Does anyone have some good ideas for killing it and keeping it from growing back?
Call a roofer unless you're *really* a DIY kind of person.
Get a Galvanized flashing installed that hangs out under the ridge.
Go for it.
Asphalt or composite roof tiles can easily get moss growing between them. This is a page about removing moss from asphalt roof tiles.
This product is amazing! You spray it anywhere you want to remove algae and moss, or to stop it from to growing. Just put it into a garden sprayer, and spray it on once a year, then every time it rains, it binds with the rain and starts working.