Then use a long handled brush to scour the surface of the shingles and loosen stuck on mold while it s dry and brittle.
How to clean your roof mold.
How to clean mold off a roof.
They re likely to damage the shingles just be sure to wet your foundation plantings first and rinse everything in clean water when you re done.
Not only is it unattractive it can actually shorten the life of your shingles so you really should get rid of it.
Be sure to wear rubber gloves to protect your hands while working with cleaning products.
Extensive mold growth can also expose the interior of your attic or crawlspace to mold spores carrying the problem over to the inside not to worry though because you can clean the mold off with basic household bleach and save.
The bigger the roof the more hundreds you ll spend.
Use undiluted white vinegar on hard surfaces in kitchens and baths.
Step 1 protect your plants and lawn.
But luckily especially when paid attention to most of the time to remove algae and mold your roof will just need a good thorough cleaning.
These stains will discolor your roof and damage the shingles over a period of time if left alone.
Splash the plants and parts of your lawn that are close to the sides of your house with water to protect them from the bleach solution.
Mold stains can form on roof shingles that are in permanent shade.
The less expensive solution is to spray wash the roof with a 50 percent mix of water and bleach to get rid of the algae.
And they have to repeat the cleaning every few years.
One way to clean the roof of algae and moss is with a brush and a little grunt work scrubbing and separating the greens from the roof.
If your roof slope isn t too steep and you re comfortable working on it you can clean it yourself and save the dough.
Professional roof cleaners charge hundreds of dollars.
You ll need a full body harness a garden sprayer a.
No pressure washers please.
Mold or mildew makes black ugly streaks on a roof.