How To Get Rid Of Black Algae On Roof

You cannot control whether the wind deposits spores onto your roof but you can prevent the spores from developing into algae.

How to get rid of black algae on roof. 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. That places the three water jets at the correct angle to blast off the dead algae colonies. But here s what you can do to clean it up a little bit. 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.

To be effective 2 4 of metal should be visible on the roof. Pressure washing can even tear shingles off 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. To keep algae from coming back once your roof is clean install a strip of copper or zinc coated sheet metal along each side of the roof just below the ridge.

This algae creeps its way upward on roofs gradually turning shingles dark brown or black. Most formulas contain chlorine bleach and or trisodium phosphate tsp and water. Spray wash the roof with a 50 mix of water and bleach to get rid of the algae. You might think that pressure washing is the best way to remove algae.

And it s only going to get worse as it gets older. An internet search on how to clean black streaks on your roof will turn up several different homemade formulas as well as commercial brands for getting rid of roof algae. No pressure washers please. How to get rid of roof algae prevention is always the best option for dealing with roof algae.

However the force of the water can cause your shingles to lose their protective granules. Use some oxygen based cleaner usually in a powder form mix it in a five gallon bucket with water. No pressure washers please. A skilled roofing expert who works with commercial flat roofs can easily help you rid your flat roof of mold or algae and keep it away.

Even with a fairly new roof like this it won t be long before the dark algae stains start making it look really bad. A roofing professional will be able to not only clean the area but also inspect the flat roof to ensure there isn t a bigger problem at the root of the growths like negative slope or severe ponding. Mix the product with water for a 1 7 dilution ratio a gallon covers about 700 to 900 sq. Pour it into a pump sprayer strap yourself into a full body harness tie it down and climb to the roof.

While copper is more toxic to algae galvanized sheet metal is much less expensive. It s easy to spot along some east west streets with lots of trees and sometimes it s present house after.