Let sit for 10 to 20 minutes and rinse with a garden hose.
Roof mold remedies.
If you decide to use a bleach solution or other readymade roof moss treatment protect nearby plants with plastic sheeting.
Because it is difficult to totally protect them from the mix spray.
Use a long handled brush to scour the surface of the shingles and loosen stuck on.
Mix up your cleaning solution.
Not to worry though because you can clean the mold off with basic household bleach and save your roof long before you need an expensive replacement.
Spray the entire roof thoroughly.
Bleach mixtures can injure sensitive plants.
Scrub tough stains with a stiff bristle brush dipped in the solution.
By this old house tom silva installs a zinc strip to keep roof algae from coming back.
Follow the steps below to remedy this problem.
The coating of water will dilute chemicals spilling downward from roof eaves.
How to use bleach mixtures on your roof.
Scrub away the thickest buildup.
Wash off all.
Using a plastic pump type garden sprayer thoroughly soak the affected area with your choice of chemical.
Spraying the roof 1.
Extensive mold growth can also expose the interior of your attic or crawlspace to mold spores carrying the problem over to the inside.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae.