Word,
I just have my own way of doing things and it may not be the best way. If dawn is not rinsed of throughly it will leave a residue.
So I usually wash and wipe a small section at a time. Keep the rinse water clean. I just stick where I am successful because I am getting older. Besides I can quit the roof any time I want and do a little each day.
Right now I am just doing it 1-2 times a year althought I do rinse of the roof quite a bit.
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