With us living in the south we find that from time to time our roof gets nasty looking. We do get a lot of rain in the south especially during hurricane season and with that said it seems to us that our roofs seem to be hit hard. Well instead of having our roofs replaced every few years instead we can use a roof cleaner instead. That way we can save lots of money which in these hard times would work out great. Plus it is safe for the environment which I love because we have to cherish our earth. So next time we need our roof to be replaced we can just clean it and get all of the algae off of it and save us time and money.