Does anyone have much experience or knowledge concerning the application of solutions to prevent algae growth on clean shingle roofs ? Also, what is the best information to give to homeowners concerning this ?
Application is the same,...the strength is way lower than what you would use to clean with. 1-2% would probably be enough for maintenance spraying. Maybe not even that much. Tell the home owner if it's not prevented, it will look bad in a few years. Educating the customers in your area begins "NOW"