Is Putting Bleach on Roof Shingles Actually Safe?
You've probably spent some time staring up at your house lately, wondering if spraying bleach on roof shingles is the right way to get rid of those ugly black streaks. It's a common sight on many homes, especially in humid areas where the sun doesn't hit every part of the roof evenly. Those streaks aren't just "dirt" or "soot" from the air; they're actually a living organism called Gloeocapsa magma, a type of hardy blue-green algae. ...