Step 4 take precautions.
Mold in roof shingles.
You may also worry that mold growth will harm your asphalt shingles and reduce the roof s lifespan.
Missing shingles a heavy storm can blow shingles off a roof especially on houses where the shingles have been weakened due to the growth of moss mold mildew or algae.
The mild chemical reaction caused by rainwater coming in contact with the zinc inhibits the growth of mold and mildew.
Step 3 check for cleanliness and rinse.
Spraying the roof 1.
Step 3 applying asphalt roofing shingles containing a copper additive in their surface granules is an option.
Scrub away the thickest buildup.
Installing zinc strips under a row of shingles near the ridge of the roof will prevent mildew from forming.
In hot and humid climates like tampa algae growth on asphalt shingles can be a real problem.
This will usually occur under chimneys or metal flashing and is because metal particularly copper is toxic to the algae and mosses that frequent roof shingling.
Allow the solution to soak into the shingles for at least 15 minutes.
These stains will discolor your roof and damage the shingles over a period of time if left alone.
Black mold stains streaks and clumps of moss growing on the roof look unsightly.
Cleaning step 2 make and apply the bleach solution.
Mix up your cleaning solution.
Use a long handled brush to scour the surface of the shingles and loosen stuck on.
Protect against regrowth if you look around your neighborhood you might notice spots that are algae free on the roofs of otherwise blackened shingles.
Spray the entire roof thoroughly.
Damaged flashing gaps or holes in the flashing can also serve as entryways for water into your attic.
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.
Put on rubber gloves and a breathing mask before proceeding you so you can.
Extensive mold growth can also expose the interior of your attic or crawlspace to mold spores carrying the problem over to the inside.
Never use a.