How often do you wash your roof?
Got up there today and gave it a good scrubbing then scrubbed the rest when I got down. Truth be told I haven't wash it since I bought it in 2013. Once a year? Twice? How many?
Forum Discussion
Once a year with TSP the 2 coats of Mop 'n Glow. 23 year old Filon roof. After using TSP you'll need to wash the sides right away.
