How To Remove Stains From Asphalt Roof Shingles

How to remove and prevent black algae stains on asphalt shingle roofs black stains on an asphalt roof caused by algae.

How to remove stains from asphalt roof shingles.

Mix 1 quarter bleach 1 gallon water and 1 4 cup trisodium phosphate. To remove the algae from asphalt shingles you have a few options. When that happens it is generally caused by mildew algae mold or dirt stains. Spray wash the roof with a 50 mix of water and bleach to get rid of the algae.

Removing moss and algae from asphalt shingles. Once it does then you can safely remove it with a leaf blower. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. Allow the mixture to remain on the asphalt shingles for 15 to 20 minutes.

7 rinse the shingles with a garden hose on a low pressure sprayer setting to remove the bleach and water solution. If your household water pressure isn t enough to generate the proper nozzle pressure at the jets the manufacturer recommends boosting it. The mixture of trisodium phosphate tsp bleach and water can also be used for removing stains. You could use regular household bleach to remove the algae from your roof.

It is not uncommon for roof shingles to turn black over time. It can take several weeks to several months for the moss to pull away from the shingles. Methods for removing stains from asphalt shingles. How to remove algae from asphalt shingles.

Many products in the market are now available for removing algae stains such as wet forget and moss out. Preventing algae and moss from growing on your roof is easier than trying to. Gradually it will loosen from the roof shingles.