01-13-2018, 03:00 PM
I don't have a drain in my unheated garage either but that doesn't stop me from washing my cars and bikes in the garage with the door closed. The floor has a slight slope towards the driveway. When I'm done, I crack the door open and allow the water to find its way out. The garage is warm enough (40's) that any leftover puddles don't freeze. No biggie.
