Even so you will always need to mount the roof later on in order to remove the dead moss.
Moss roof remover.
Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association.
4 apply a dab of sealant to every nail head and run a bead of sealant under each shingle.
If the water will not reach the peak of the roof from the ground you can spray while standing on a ladder.
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.
Liquid moss killers cover the roof more evenly than dry powders and they let you stay on the ground for the application.
To remove moss you first have to kill it.
3 secure the strip with roofing nails.
Space between the strips.
Follow these steps for how to remove moss.
When the moss is dead scrub it off then install zinc flashing to prevent more moss growth.
Use a solution of bleach vinegar or dish soap for this.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.
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.
6 to kill existing moss and lichen make a cleaning solution of equal parts bleach and water.