I charge separate for roofs.
Wash and wax $12 per foot
I offer a 10-15 rinse of the roof for free.
If it's dirty and requires more attention. I charge $5 per linear foot.
Also I don't deal...
Degreaser will etch the exterior. However the drip marks left by degreaser can be buffed out with compound and a buffer. Good luck.
Medium aggressive polish light to medium oxidation. Google a...