How To Remove Roof Algae And Mildew

A mixture of trisodium phosphate tsp bleach and water will also remove stains.

How to remove roof algae and mildew.

Continue spraying until you see runoff then let the chemicals sit for 15 20 minutes to soak in and begin attacking the mold. There are several products on the market specifically designed to remove algae stains from roofs such as wet forget outdoor. 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. In most cases a gentle power washing or brushing with a soft bristled brush will be enough to remove the moss or algae from the surface of the roof.

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. The less expensive solution is to spray wash the roof with a 50 percent mix of water and bleach to get rid of the algae. Roof cleaned with oxygen bleach left and chlorine bleach center. If you re looking for a gentler yet still effective solution clean with other products including tsp bleach and water.

Because it is difficult to totally protect them from the mix spray them down with clean water before. Constant rain and increased heat create the perfect breeding ground for mold mildew and algae. Roof algae generally have a black green hue. Start on lowest row of shingles and work your way backwards to the upper part of the roof.

Bleach shouldn t be used either because it can damage your roof. You may think you have roof algae when really you have moss mildew or mold. Spray the entire roof thoroughly. The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen.

Bleach mixtures can injure sensitive plants. Using a plastic pump type garden sprayer thoroughly soak the affected area with your choice of chemical. In other cases the roof is simply too damaged and new roofing will be needed. Although commercial products clean and kill unwanted growths homemade cleaners offer a cheaper alternative.

One way to clean the roof of algae and moss is with a brush and a little grunt work scrubbing and separating the greens from the roof. For outdoor use look for a bleach free mold and mildew remover. How to use bleach mixtures on your roof. A mixture of trisodium phosphate tsp bleach and water will also remove stains.

This will prevent the solution from draining in your direction. No pressure washers please. Diluted liquid chlorine bleach removes mold from concrete brick stucco and other outdoor materials but the run off may damage.