Rick from Troy, Mi writes
I know that they make a specific product for roofs but since I have a gallon of the concentrate I was hoping that is could be applied at some safe ratio for application on a roof.
Lilly Miller Moss Out For Lawns Concentrate is only labeled for lawns and would likely cause severe staining on shingles. You can use Moss Out Heavy Duty Cleaner to kill moss on the structure, and on other surfaces such as brick and stone.
Answer last updated on: 08/17/2014
