Cleaning Green Mold From Roof Shingles

Follow these three straightforward steps to clean off all moss and keep it from coming back.

Cleaning green mold from roof shingles.

Mold stains can form on roof shingles that are in permanent shade. The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores. How to clean mold off a roof. Moss those green feathery clumps you may see forming on the roof is a different type of plant and isn t the same thing as algae or mold.

If your roof appears dark and discolored in some areas you may think that mold has developed on the surfaces of the shingles. 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. Algae is a single celled organism while moss is not. The streaks look like mold but they re actually algae colonies that form in your shingles and feed on moisture and the limestone filler agents in the shingles.

Using shingles that have been treated with algicide keeps the growth at bay for about 10 years thus the 10 year algae warranty. Mold or mildew makes black ugly streaks on a roof. Though often attributed to an accumulation of dirt defective shingles mold or mildew. If it is slimy or any sort of residue comes off on your hand repeat the above steps.

You must let the roof dry before a second application of mix. However the black streaks you re seeing are really colonies of blue green. How to clean algae or mold off your roof shingles living in a humid area of the country like florida you ve probably seen your asphalt shingle roofs with unsightly dark streaks on them. Cleaning due to evidence of permanent asphalt shingle damage caused by high pressure powerwashing.

To clean mold off a roof start by putting on rubber gloves a breathing mask and goggles to protect yourself from the harsh cleaning chemicals. Inspect the roof for any remaining fungus. A layer of green moss might look cozy and rustic atop your house but it can be bad news for your roof. Mold won t form on a roof because it s allergic to sunlight and as soon as the ambient temperature surrounding the mold becomes dry the mold dies.

Then use a long handled brush to scour the surface of the shingles and loosen stuck on mold while it s dry and brittle. A blue green algae known as gloeocapsa magma could be the reason you have the algae which is spread by airborne spores. If you re reading this chances are you re looking for roof cleaning tips because your shingles are no longer looking new and attractive. Not only is it unattractive it can actually shorten the life of your shingles so you really should get rid of it.