Removing Algae From Metal Roof

Zinc strips left have been used for many years as an algae preventative.

Removing algae from metal roof. When it rains a slight amount of zinc dissolves from the strips and coats the roof inhibiting algae and fungus. However the force of the water can cause your shingles to lose their protective granules. It s not just for roofs. To remove difficult algae spots use only a wet cloth sponge or low pressure washer.

Moss is a thick organic growth. 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. For it to be effective two to four inches of the metal needs to remain visible on the roof. Roof moss removal usually requires a broom or heavy stream of water.

Spray this mixture onto the roof and agitate it with a soft bristled brush to get it clean. Never mix dangerous chemicals especially with compounds that contain bleach and ammonia. Copper is more toxic to moss and algae but zinc is. 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 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. Another noteworthy feature of the gp66 is universality. Copper strips prevent the growth of moss and algae. If you wish to prevent reoccurrence of fungus think zinc.

Attached near the peak of the roof. 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. You might think that pressure washing is the best way to remove algae. Most of these substances can be removed by a mixture of cup tri sodium phosphate and 1 gallon of water.

To be effective 2 4 of metal should be visible on the roof. Algae is just a thin film of organic growth that can be removed by washing the roof with certified organic oxygen bleach. Some homeowners also try to get rid of algae by using bleach. Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it.

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.