They re likely to damage the shingles.
How do you remove mildew from roof shingles.
How to clean mold off a roof.
You can find more information on these special roofing shingles here.
Remove black stains from roof shingles to preserve the appearance of your home s roof.
How to remove algae from asphalt shingles.
But that would only make sense if the shingles were worn out.
However at the time of this writing they do list a number of companies that.
If it s dirt the dark stain will remain but if it s mildew the stain will go away.
One way to determine if it s mildew is to put a few drops of chlorine bleach on to the black mark.
First you need to ensure that roof shingles and tiles are not broken chipped or damaged as water applied at a high pressure is likely to amplify the damage and seep through any cracks.
This unique advance in shingle technology gives long term fungus protection for the entire roof.
It s easy to let a mold problem sneak up on you on in out of the way places like the roof of your home.
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.
You could use regular household bleach to remove the algae from your roof.
Spray wash the roof with a 50 mix of water and bleach to get rid of the algae.
They call it the algaeblock system.
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.
Also when using a power washer you will need to stand on the roof above the mold so you can point the power washer in a downward direction.
3m is not a manufacturer of asphalt shingles just the granules.
To remove the algae from asphalt shingles you have a few options.
No pressure washers please.
You could replace all the roofing with new shingles dark enough to disguise the staining or with shingles laced with copper granules which are lethal to algae.
When that happens it is generally caused by mildew algae mold or dirt stains.
Just because you can t see it however doesn t make it any less dangerous.
Mold stains can form on roof shingles that are in permanent shade.
It is not uncommon for roof shingles to turn black over time.
These black streaks are unsightly and can diminish the appearance of the entire exterior of the home.
A blue green algae known as gloeocapsa magma could be the reason you have the algae which is spread by airborne spores sometimes it can also be caused by an accumulation of mildew mold dirt or defective 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.
