How To Clean Algae Off Of A Flat Roof

Cleaning step 2 make and apply the bleach solution.

How to clean algae off of a flat roof.

Put water over the roof and moss and then put bleach onto the moss this will turn the moss brown in minutes. Protect the soil and plants surrounding your home. At about 2 4 gallons of water per minute a gasoline power pressure should remove moss and algae with ease. Repeat until all the moss is gone.

Drag the rinsing tool in a forward and back motion as if you re vacuuming. Apply cleaner use a stiff bristle brush to apply the cleaner to the roof. Cleaning algae stains 4 gallons of water 1 gallon of bleach 1 cup of tsp tri sodium phosphate or a phosphate free substitution. That places the three water jets at the correct angle to blast off the dead algae colonies.

To clean an asphalt shingle roof to remove black algae stains. Never use a. A pressure washer a pressure washer is an extremely effective method of cleaning your flat roof. Mix the product with water for a 1 7 dilution ratio a gallon covers about 700 to 900 sq.

Mix cleaner mix up oxygen based cleaner with water in a five gallon bucket following the instructions. Step 4 take precautions. If you use any kind of bleach or chlorine solution to wash your. Remove any standing water from the top of the flat roof.

Use a large brush to push away the water and any leaves that have collected on. Put on rubber gloves and a breathing mask before proceeding you so you can. 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. After a few minutes hose the area down with water and check.

Step 3 check for cleanliness and rinse. An added bonus because no chemicals are used it is environmentally friendly. Allow the solution to soak into the shingles for at least 15 minutes. Wet roof lightly wet down the roof using a garden hose.