I read a post where a person (smaller quilt) taped the backing up inside her shower enclosure. She spray basted the layers in there and then just washed down the shower stall. I may try it on a small quilt and see how it works since we have a ceiling fan right outside the shower enclosure. For larger quilts I am eyeing the back of my garage door. As long as no one uses the automatic garage door opener, it should work.