How Do You Remove Algae From Roof Shingles

How to remove algae from roof shingles pacific west roofing here in oregon mostly blue green algae grows on the outside of the house or on the roof shingles.

How do you remove algae from roof shingles.

No pressure washers please. There are a ton of leaves dust and algae on my roof. I ll make sure to use a mixture of trisodium phosphate bleach and water to remove the stains and algae. Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight.

There are several products on the market specifically designed to remove algae stains from roofs such as wet forget outdoor. It is only advisable to use a pressure washer because you no longer need to worry about the condition of the old roof. That ll prevent the cleaner from drying out too quickly. We use a softwashing technique at sherwood roof cleaning power washing to clean roofs here in fairfield county.

Hose off the area with plain water spraying at a downward angle. Softwashing to remove roof algae moss. Then use a long handled soft bristle scrub brush to remove the moss from the roof scrubbing from the top down to avoid lifting. Allow the mixture to sit on the shingles for 15 minutes then rinse the roof well with water from the garden hose.

A mixture of trisodium phosphate tsp bleach and water will also remove stains. We use chemical solutions that are approved as safe from shingle manufacturers and a low pressure soft wash technique that doesn t cause damage. Pour it into a pump sprayer strap yourself into a full body harness tie it down and climb to the roof. The only way to take care of it is to use a high base chemical solution like zinc sulfate.

This is the only safe way to effectively remove algae and moss from roof shingles. Roof algae generally have a black green hue. Set the nozzle at the highest pressure setting and hold it 12 inches from the shingles. Then spray the cleaner onto the shingles photo 1.

Rinse from the top of the roof down to avoid re staining the shingles with the dirty water. They re likely to damage the shingles just be sure to wet your foundation plantings first and rinse everything in clean water when you re done. The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen. Thank you for this.

You may think you have roof algae when really you have moss mildew or mold. Hey gotta have a plan b. Your roofers will need to remove all the shingles on your old roof or they may need to remove the largest chunks of moss with a pressure washer and then apply the new roof.