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.
How do you get rid of moss on a roof.
Allow the bleach solution to remain on the roof for 10 to 15 minutes.
Maintain a consistent flow of moss killer down the line.
Do not let the bleach solution remain on the roof any.
Blow the roof once or twice a year to eliminate any dirt debris leaves and branches which can create moisture leading to growth of moss.
In this video this old house general contractor tom silva explains how to remove roof moss and prevent it from coming back.
Place a stiff bristle scrub brush on a pole or broom handle.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye.
3 secure the strip with roofing nails.
Do it carefully to avoid damaging the shingles.
Hose off and brush all moss loose from your roof shingles.
But that would only make sense if the shingles were worn out.
The easiest and cheapest way to kill and prevent moss algae is by using a copper sulfate solution.
Billnovember 19 2017 at 8 04 am.
You can as well use blowing and hand cleaning to remove moss on the roof.
Clean the roof on a cool overcast day.
To apply dry powder moss killer place an extension ladder against the house and climb to the roof.
When you inspect your roof and discover signs of moss dampen it with water and get rid of it with a nylon brush.
Carefully climb onto the roof using a ladder.
Dispense the moss killer in lines about 2 feet apart parallel to the roof ridge.
You could replace all the roofing with new shingles dark enough to disguise the staining or with shingles laced with copper granules which are lethal to algae.
2 slide sacrificial zinc strip underneath the loosened shingles.
This is oof cleaning products which should be left to absorb into the moss for at least 20 minutes will not evaporate as quickly as they would on sunny days.
Moss can be removed physically with water and a stiff brush on a pole or a scrub brush chemically or a bit of both.
From the ridge of the roof brush downward.
Power wash with low pressure.
Scrub the moss and lichen from the roof with a long handled scrub brush.
Experts recommend that you save roof moss removal for a cloudy day.