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.
Roof moss killing solution.
Add more of the oxygen bleach solution as needed to.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye.
Moss b ware is 99 percent zinc sulfate monohydrate a proven moss killer and moss deterrent.
Rinse your roof with cold water.
Let the solution remain on the moss for 20 to 45 minutes which should be long enough for the moss to die.
7 protect nearby shrubs and lawn with plastic tarps.
Space between the strips.
Using your brush scrub the moss off of your roof working from top to bottom.
Apply generously over the remnants of the moss and the roof shingles.
The easiest way to do this is to bring a garden hose onto the roof with you.
Continue layering the solution as needed to keep the moss damp for 20 minutes.
Or you can use a sprayer with plain water to first moisten the moss then refill it with the moss killing solution.
Hose off and brush all moss loose from your roof shingles.
In fact one way to prevent moss from growing in the first place is to attach zinc strips to the ridge of your roof.
Apply w ith 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 removal products and diy solutions some readymade cleaners like wet and forget liquid mold remover 30 walmart can be mixed and applied per manufacturer s instructions and left to kill the moss with no rinsing required.
Here are a few moss removal solutions for your roof that you can buy or create yourself.
Mix 4 scoops or 1 2 cup of oxygen bleach with 4 gallons of warm water.
4 apply a dab of sealant to every nail head and run a bead of sealant under each shingle.
6 to kill existing moss and lichen make a cleaning solution of equal parts bleach and water.