Wet down the roof with water from the garden hose.
Remove black stains from roof shingles.
You will need to remove the existing algae by hand in order to eliminate the black streaking altogether.
A spray stain remover solution a scrub brush a garden house protective eyewear rubber gloves shoes with tread a bucket and a ladder.
As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see.
Use a cleaner specially made for killing algae or by spraying a mixture of one part bleach to four parts water with tsp trisodium phosphate or.
It is important that the roof be wet when the cleaning mixture is applied or it may.
Do shingles on your north west or other shaded roofs have streaky moldy stains.
What you do is put it into a pump sprayer spray it on the roof and you need to keep the roof wet with the solution for about 10 or 15 minutes.
Make your shingles last longer.
Algae can be killed and the stains removed using chemical cleaners though they usually return over time.
While doing little harm to your shingles the black streaks caused by the algae are unsightly.
Here s how to clean the.
So black stains on roofs can be removed just choose a quality roof cleaner product or your local roof cleaning professional and make your roof look better.
In recent years roofing manufacturers have begun mixing copper granules into roofing products.
The algae will worsen and become more noticeable each year trapping moisture and causing premature shingle aging and granule loss.
How to remove black stains from roof shingles.
Jimmy shows us how he cleans the black mold stains on a roof using their cleaner roof sparkle make it your self.
Fill a large bucket with 1 gallon of hot water 1 qt.
The algae feed on the limestone in shingles.
Take a scrub brush.
The closer you are to the roof stains the better your roof stain removal products will work.
Black streaks on the north and west facing and shaded.
In order to remove the black streaking from your roof you will need several items.
Lightly scrub the shingles.
Algae stains can be removed by cleaning though they usually return.
Thanks to jimmy from roof sparkle.
Re shingle the roof with shingles that have metal granules to exact the same effect as the metal strips manufacturers of algae resistant.
How to clean roof stains wash your shingles where the sun doesn t shine.
Of chlorine bleach and a quarter cup of.