Quote Originally Posted by dj1 View Post
I've tried the bleach solution over shingles, excpt I used 100% bleach, with great success. I applied it with a simple 1 gallon sprayer. The results were obvious in 20 minutes.
I have a 2-story house (3 stories with a walk-out basement) and the sole earner, so it's not safe for me to be on the roof. Does the bleach stay on the roof or flow to the gutters. My issue is that a bleach solution would need to be caught to prevent flowing into the soil.