Removing Algae From Metal Roof

Copper is more toxic to moss and algae but zinc is.

Removing algae from metal roof.

Algae is just a thin film of organic growth that can be removed by washing the roof with certified organic oxygen bleach. Never mix dangerous chemicals especially with compounds that contain bleach and ammonia. The industrial grade roof cleaner does a really good job of getting rid of algae and lichen based residue which certainly makes it more capable than some of the other existing options. Zinc strips left have been used for many years as an algae preventative.

Pressure washing can even tear shingles off your roof. Preventing algae from coming back if you want to make sure algae doesn t come back after you have cleaned your roof then install a strip of zinc or copper coated sheet metal on each side of your roof just under the ridge. To remove difficult algae spots use only a wet cloth sponge or low pressure washer. To keep the algae from coming back insert 6 inch wide strips of zinc or copper under the row of shingling closest to the roof peak leaving an inch or two of the lower edge exposed to the weather.

If you wish to prevent reoccurrence of fungus think zinc. Another noteworthy feature of the gp66 is universality. To be effective 2 4 of metal should be visible on the roof. Copper strips prevent the growth of moss and algae.

Attached near the peak of the roof. It s not just for roofs. Moss is a thick organic growth. Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it.

Spray this mixture onto the roof and agitate it with a soft bristled brush to get it clean. Stop a moss problem from returning by installing strips of zinc or copper coated sheet metal just below the top ridge on both sides of the roof. That way whenever it rains some of the metal molecules will wash down the roof and kill any algae trying to regain a foothold on your shingles. However the force of the water can cause your shingles to lose their protective granules.

When it rains a slight amount of zinc dissolves from the strips and coats the roof inhibiting algae and fungus. You might think that pressure washing is the best way to remove algae. For it to be effective two to four inches of the metal needs to remain visible on the roof. Most of these substances can be removed by a mixture of cup tri sodium phosphate and 1 gallon of water.

To remove algae and moss growth from the roof dissolve one cup of ammonia for every 5 gallons of water used and work from the top to the bottom.