Thanks for the feedback so far, guys. I was thinking along the same lines as a many of you.
What I think I’ll do is walk the roof, tieing off to my car and the deck as anchors. I’ll x-jet the roof @ 1.5-2% with low pressure and some roof snot, agitate with a push broom, and rinse off.
I’ll try to avoid a lot of run-off or overspray, as I just cleaned the windows and don’t feel like recleaning all of them.
We’re in snow country, so I’m not too scared of cracking the vinyl. I think I’ll know after a step or two whether I’m on safe footing, lol.
I’m guessing 1.5 hours for this roof if all goes well. Maybe $350? It’s a really good customer.