Organic growth treated and killed. Allow up to 30 days or 2 rains to completely rinse any remaining killed algae and fully brighten roof (Gutter downspouts bagged and run-off collected and disposed of)
Organic growth treated and killed. Allow up to 30 days or 2 rains to completely rinse any remaining killed algae and fully brighten roof (Gutter downspouts bagged and run-off collected and disposed of)