Kill Algae On Roof

You could replace all the roofing with new shingles dark enough to disguise the staining or with shingles laced with copper granules which are lethal to algae.

Kill algae on roof.

Bleach will neutralize and kill algae off your roof and remove the black streaking. 1 quart bleach 6 sodium hypochlorite 1 gallon water 1 4 cup tsp trisodium phosphate or other heavy duty cleaner don t use a cleaner that contains ammonia or is not. However this comes with risks. How to remove algae from roof shingles here in oregon mostly blue green algae grows on the outside of the house or on the roof shingles.

It must be diluted before applied and plants must be rinsed down. Moss is thick algae is paper thin. The most effective method of cleaning algae and moss from a roof is with a 50 50 mix of laundry strength liquid chlorine bleach and water. Roof moss removal usually requires a broom or heavy stream of water.

This is important in order to not harm the roofing and siding materials. Black streaks green or white spots round lichens mosses green moss that spreads across your roof. 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. Any chlorine solution that drips or is rinsed off the roof can kill your landscaping.

Copper strips prevent the growth of moss and algae. The only way to take care of it is to use a high base chemical solution like zinc sulfate. Oxygen bleach does not harm vegetation. But that would only make sense if the shingles were worn out.

Algae stains don t show up below the metal flashing around chimneys or roof vents because the copper and the zinc coating on galvanized sheet metal are toxic to algae. It takes the right amount of water pressure and often the addition of professional grade cleaning solutions to truly remove algae and moss from the roof and siding of your home. Working on a sunny day will cause the cleaning solution to evaporate in seconds or a few minutes. It s best to clean a roof when it s cool and the sky is overcast.

Whenever it rains trace amounts of metals are washed down the roof inhibiting algae growth. It takes special care to clean algae roof stains and moss off the roof. Roof moss removal and algae tips. Although mold can grow in your roofing materials if water gets trapped somewhere if you see any of the following on top of your roof algae are more likely your problem.

You should never use home remedies or store bought chemical products to clean algae. Apply with a sprayer and allow the solution to dwell on the roof surface for 15 to 20 minutes and then rinse thoroughly with low pressure water. Algae is just a thin film of organic growth that can be removed by washing the roof with certified organic oxygen bleach.