Its recommended anyone cleaning moss off a roof should do it on a cloudy day.
How to get moss off roof of house.
But that would only make sense if the shingles were worn out.
Most roof cleaning products require at least 20 minutes for it to absorb into the moss.
Consider filling a bucket with warm water and dish detergent and soaking the bristles of your brush for a more effective clean.
It doesnt harm plants or grass so it doesnt matter if there is run off from the roof.
However there is more than one way to.
In this video this old house general contractor tom silva explains how to remove roof moss and prevent it from coming back.
Wet the side of the house with a garden hose.
Use a scrub brush to remove surface dirt and mold.
Clean the house siding to remove any moss that may already be growing on the surface.
A layer of green moss might look cozy and rustic atop your house but it can be bad news for your roof.
Use sodium percarbonate its a granule which produces oxygen when mixed with water.
Follow these three straightforward steps to clean off all moss and keep it from coming back.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.
1 slide a margin trowel under shingles to unstick them from the ones below.
How to get rid of algae on the roof 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.
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.
Use the tool to gently lift away matted moss that has gathered on the flat sections of the shingles.
It also kills the spores which enables the moss to spread.
Scrape off the moss.
When applying roof cleaning products onto a roof on a hot sunny day it will quickly evaporate and you won t get the desired result.