Your roofers will need to remove all the shingles on your old roof or they may need to remove the largest chunks of moss with a pressure washer and then apply the new roof.
How to apply moss out on roof.
Grab your oxygen bleach solution and apply it to all sections of moss growth.
Put on personal protective gear to cover all areas of skin and eyes due to the corrosive nature of lilly miller moss out.
Without moisture roof moss dries out turns dark and dies.
Then spray the roof beginning at the ridge and working downward.
Dry corry s moss b ware granules and the micro granular lilly miller moss out.
Hose off and brush all moss loose from your roof shingles.
Add an extension spray pole and you can easily handle all two story homes without a ladder.
To apply dry powder moss killer place an extension ladder against the house and climb to the roof.
Maintain a consistent flow of moss killer down the line.
Attach strips of zinc 37 the home depot or zinc coated metal flashing strips just below a roof s peak or ridge caps.
When it rains water flows over the metal strips leaching out moss retardant zinc particles which attach to roof shingles and or tiles to stop new moss from forming.
Roofs and structures come in easy ready to use shaker canisters.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye.
Connect spray nozzle to garden hose.
When you are ready to spray turn the knob on the front so that the arrow pointd to the mix position.
It is best to do this on a calm overcast day.
Carefully get up to your roof and brush downward to knock the moss loose.
When you are.
When spraying be sure to soak the targeted site thoroughly.
Dispense the moss killer in lines about 2 feet apart parallel to the roof ridge.
Moss algae mold and lichen cleaning chemicals can easily be sprayed from ground level.
Highly effective non staining roof moss control products come in easy to use dry and liquid formulas.
Turn on the water from the faucet.
It is only advisable to use a pressure washer because you no longer need to worry about the condition of the old roof.
Continue layering the solution as needed to keep the moss damp for 20 minutes.