How To Remove Black Stains From An Asphalt Roof

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 other detergent added in a garden pump up sprayer.

How to remove black stains from an asphalt roof.

Bleach may kill the top layer of algae and lighten the stains but it doesn t kill the underlying algae. Fill a large bucket with 1 gallon of hot water 1 qt. Wet down the roof with water from the garden hose. It is important that the roof be wet when the cleaning mixture is applied or it may.

A mixture of trisodium phosphate tsp bleach and water will also remove stains. Here are a few. In order to remove the black streaking from your roof you will need several items. Allow the bleach to remain on for 15 to 20 minutes then rinse it off with a hose.

Finally there are lots of special products made just for removing algae from asphalt shingles that work really well. If the streaks don t bother you or you re not ready to invest in a new roof install zinc or copper strips available at roofing centers along the top course of shingles. Be sure to have a friend or family member with you to ensure that you are safe while your climb up and work on your roof. How to prevent black streaks roof mold.

Algae can be killed and the stains removed using chemical cleaners though they usually return over time. Oxygen bleach lightens stains as well and is less harmful to the environment but it doesn t produce as immediate or dramatic an effect as chlorine bleach. When rain hits the strips it produces a solution that runs down the roof and keeps algae moss and fungus from growing. How to remove black stains from roof shingles.

Roof cleaned with oxygen bleach left and chlorine bleach center. A spray stain remover solution a scrub brush a garden house protective eyewear rubber gloves shoes with tread a bucket and a ladder. Chomp pro algae mildew stain cleaner. 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.

The closer you are to the roof stains the better your roof stain removal products will work. So the algae colony gets right back to work.