Your shingles are made of a fiberglass mat that is covered with protective oils tar and asphalt.
Bleach mix to remove roof moss.
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.
Mix 4 scoops or 1 2 cup of oxygen bleach with 4 gallons of warm water.
It s slower acting than chlorine bleach.
Spray the bleach solution over the moss mats so the moss is completely soaked.
Carefully pour some of it into a watering can which is much easier to use when you are ready to apply the bleach water solution to the moss.
Use an extra long paint stirrer or similar item to thoroughly mix the contents together.
Chlorine bleach will kill roof moss but when you rinse if off the roof it may kill the plants growing alongside your house too.
The reason you shouldn t use bleach to remove moss from your roof has to do with the composition of your shingles.
Wind sunlight water etc.
Mix the bleach and water together.
If you want to use oxygen bleach to prolong the lifespan of your roof it will kill moss.
Wait 15 minutes for the bleach to do its job.
Follow the directions on your container of oxygen bleach and mix the right amount of this powdered bleach with water.
You also can make your own moss remover in a large spray bottle with one of these four diy recipes.
8 ounces dawn ultra dish soap 2 gallons of water 1 pound powdered oxygen bleach 2 gallons of.
Apply generously over the remnants of the moss and the roof shingles.
Step 2 fill the reservoir on a garden sprayer with the cleaning solution.
Leave the bleach solution on for 20 minutes then rinse off.
To clean either algae or moss the association recommends putting on protective gear and protecting plants spraying with a 50 50 mix of household bleach and water allowing that to sit for at.
Step 4 use the watering can to drench the moss with the bleach water solution.
Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association.
If your moss problem is extensive and you plan to use a large quantity of chlorine bleach bear in mind that it will accelerate the corrosion of your metal gutters and downspouts.
Transfer your diluted bleach solution to a garden or backpack sprayer.