Apply with a sprayer and allow the solution to dwell on the roof surface for 15 to 20 minutes and then rinse thoroughly with low pressure water.
Moss on roof shingles bleach.
Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association.
Add more of the oxygen bleach solution as needed to.
The reason you shouldn t use bleach to remove moss from your roof has to do with the composition of your shingles.
What bleach does to your roof.
The most effective method of cleaning algae and moss from a roof is with a 50 50 mix of laundry strength liquid chlorine bleach and water.
In the pump sprayer pour a mixture of roughly 1 3 a gallon of bleach to 1 gallons of water.
Before applying a moss remover cleaner use a scrub brush 3 15 the home depot or a long handled soft bristle brush to gently scrape or pluck moss from the roof shingles or tiles.
Once the moss has been thoroughly eradicated from the roof take steps to keep moss from returning.
Chlorine bleach will do the job but it can damage or discolor certain types of roofing such as wooden shingles.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.
Mix 4 scoops or 1 2 cup of oxygen bleach with 4 gallons of warm water.
Algae will disappear and wash away with subsequent rains the association advises.
Hose off and brush all moss loose from your roof shingles.
Remove the harness system from the roof.
Spray the bleach mixture on the roof.
According to tim carter author of the nationally syndicated column ask the builder bleach will kill the moss growing on your roof.
Oxygen bleach however will kill the moss without harming your roof.
Spray any plants and grass underneath the roof with water again once the process is.
Cleaning asphalt shingles of clumps of moss or algae that have taken root in the roof can feel like an overwhelming endeavor.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye protection.
The bleach will kill the algae or moss but rinsing won t necessarily leave the roof sparkling clean.
The most effective method of cleaning algae and moss from a roof is with a 50 50 mix of laundry strength liquid chlorine bleach and water.
At keeping it clean we ve seen just about everything when it comes to roofs and moss removal and we can tell you upfront that using bleach on your roof is rarely a good idea.