Facts About Moss on Roofs and Structures

Under its fuzzy green exterior, moss is a destructive pest. It creeps across roofs, loosening and staining shingles. It covers walks and decks making them slick and dangerous to walk on.
Moss can shorten the life of a roof by lifting the tabs of composition roof and promoting rot by trapping moisture on shake roofs.
Overhanging trees promote ideal moss conditions. The canopy of the tree can be thinned to let in more light and help prevent moss.
Keep walkways safe by controlling slippery moss and slime.
Cautions:
- Do not allow mixture to run from eaves or splash from roof to planted areas below
- Cover bushes and desirable plants and lawn if contact is unavoidable
- Product may damage painted metal surfaces and non-galvanized steel roofs
- Immediately wash off any spray that accidentally contacts these surfaces