Used Renovo the other day. Had to do it in sunshine which wasn't ideal but anyway...
Great product to use - make sure you buy the fabric cleaner and NOT the vinyl cleaner like I did
After finally getting the right stuff, I just followed the instructions to the letter. Brushed and vacuumed the hood first - paying atterntion to the gutter above the windows.
Applied the cleaner starting in the middle letting it dwell as per instructions.
I wasn't brave enough to use the pressure washer, so used the garden hose with a spray adapter. It took ages for the soap to disperse completely which surprised me.
Cleaned it twice though as I felt there was still grime coming out.
Hood was allowed to dry out completely and then I applied the Ultra Proofer some days later. For me x1 litre wasn't quite enough to do the roof twice so another bottle is on order.
But water beads up lovely now