Remove Black Stains On Roof

Do shingles on your north west or other shaded roofs have streaky moldy stains.

Remove black stains on roof.

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. The closer you are to the roof stains the better your roof stain removal products will work. Take a scrub brush.

Your stains are probably caused by the airborne spores of a blue green algae known as gloeocapsa magma which is often mistaken for mold or mildew. The first stains usually appear on the north facing sides of a roof which receives less light and in. The oxygen bleach starts to go ahead and attack the roof algae and it does its best to kill it and take away the stains. These roof invaders require a moisture rich environment usually supplied by dew and shade.

While doing little harm to your shingles the black streaks caused by the algae are unsightly. Here s how to clean the. How to clean roof stains wash your shingles where the sun doesn t shine. It is important that the roof be wet when the cleaning mixture is applied or it may.

In order to remove the black streaking from your roof you will need several items. Lightly scrub the shingles. In recent years roofing manufacturers have begun mixing copper granules into roofing products. Algae stains can be removed by cleaning though they usually return.

Of chlorine bleach and a quarter cup of. The algae feed on the limestone in shingles. Wet down the roof with water from the garden hose. Make your shingles last longer.

Algae can be killed and the stains removed using chemical cleaners though they usually return over time. How to remove black stains from roof shingles. An internet search on how to clean black streaks on your roof will turn up several different homemade formulas as well as commercial brands for getting rid of roof algae. 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.

How to remove and prevent black algae stains on asphalt shingle roofs algae resistant shingles. The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. Black streaks on the north and west facing and shaded. A spray stain remover solution a scrub brush a garden house protective eyewear rubber gloves shoes with tread a bucket and a ladder.

Most formulas contain chlorine bleach and or trisodium phosphate tsp and water.