How To Clean Algae Off Of A Flat Roof

Use a large brush to push away the water and any leaves that have collected on.

How to clean algae off of a flat roof. Remove any standing water from the top of the flat roof. At about 2 4 gallons of water per minute a gasoline power pressure should remove moss and algae with ease. Drag the rinsing tool in a forward and back motion as if you re vacuuming. Put water over the roof and moss and then put bleach onto the moss this will turn the moss brown in minutes.

Step 3 check for cleanliness and rinse. Mix the product with water for a 1 7 dilution ratio a gallon covers about 700 to 900 sq. 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. After a few minutes hose the area down with water and check.

Cleaning step 2 make and apply the bleach solution. 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. Protect the soil and plants surrounding your home. Wet roof lightly wet down the roof using a garden hose.

That places the three water jets at the correct angle to blast off the dead algae colonies. Use a water brush to sweep away excess water and dead moss. Step 4 take precautions. Never use a.

To clean an asphalt shingle roof to remove black algae stains. A pressure washer a pressure washer is an extremely effective method of cleaning your flat roof. An added bonus because no chemicals are used it is environmentally friendly. Cleaning algae stains 4 gallons of water 1 gallon of bleach 1 cup of tsp tri sodium phosphate or a phosphate free substitution.

Mix cleaner mix up oxygen based cleaner with water in a five gallon bucket following the instructions. Repeat until all the moss is gone. Put on rubber gloves and a breathing mask before proceeding you so you can. Apply cleaner use a stiff bristle brush to apply the cleaner to the roof.