How To Clean Algae Off Roof Shingles

Both algae and moss can be easily removed from asphalt shingles with a 50 50 solution of chlorine bleach and water.

How to clean algae off roof shingles.

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. Simple cover your plants just as painters do. After 15 to 20 minutes rinse the solution off with a sprayer that has enough force to dislodge algae and moss without damaging the shingles. There are several products on the market specifically designed to remove algae stains from roofs such as wet forget outdoor.

So it pays to clean your shingles as soon as you spot algae growth. Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association. But that would only make sense if the shingles were worn out. But once the algicide wears off your roof hosts an all you can eat buffet for the neighborhood algae spores.

For deep stains let the roof dry then reapply the cleaning solution and rinse it off again after no more than 30 minutes. To learn how to prevent moss and algae from getting on your shingles keep reading. The most effective method of cleaning algae and moss from a roof is w ith a 50 50 mix of laundry strength liquid chlorine bleach and w ater. It s best to clean moss off a roof as soon as you notice it s growing there.

Using shingles that have been treated with algicide keeps the growth at bay for about 10 years thus the 10 year algae warranty. Heavy moss growth can actually form dams that can cause water to back up under the shingles and damage the roof deck.