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.
How do i kill moss growing on my roof.
Removing buildup and debris on your roof goes a long way in ensuring that moss algae and lichen have less of a chance of spreading.
Create a 50 50 mixture of chlorine bleach and water and spray it generously on the moss.
Wet the moss by spraying with your hose.
The easiest way to do this is to bring a garden hose onto the roof with you.
Moss b ware is 99 percent zinc sulfate monohydrate a proven moss killer and moss deterrent.
First keep your roof clean.
Using your brush scrub the moss off of your roof working from top to bottom.
In fact one way to prevent moss from growing in the first place is to attach zinc strips to the ridge of your roof.
Grab your oxygen bleach solution and apply it to all sections of moss growth.
Go with the slope of the roof always spraying water downward toward the ground instead of going against the shingles.
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.
Use a low pressure setting on your spray nozzle to avoid damaging your shingles.
Use a garden hose to spray water directly onto your mossy areas.
Over time as rain falls zinc residue coats the roof to prevent moss growth.
Hose off and brush all moss loose from your roof shingles.
At least twice a year be sure to clean out your gutters and downspouts.
If you spray upward you run the risk of loosening shingles and causing more damage than the moss.
Wear rubber gloves to avoid exposing.
Prune off or thin out overhanging tree or shrub branches that are growing over or next to the roof to increase the amount of sunlight reaching.
Or you can use a sprayer with plain water to first moisten the moss then refill it with the moss killing solution.
How to remove moss from your roof.
Continue layering the solution as needed to keep the moss damp for 20 minutes.
Sweep or hose off leaves branches and any other debris that accumulates on the roof regularly to avoid.
Homeowners can take two approaches to prevent moss growth.
How to kill moss growth on roof shingles.