What is the best flooring for a darkroom. I am hoping to finish out a room in my basement to be my darkroom. Not wanting to wait, however, I am using a windowless room in my office right now. Works great. However, I was not too careful about the floors, waxed tile type floor. I now have bir orange-brown spots all over the path from the developer tray to the stop bath. And they do not come up. Not with the usual cleaners. Not with straight bleach. 1) Any suggestions on cleaning this stuff off the floor? 2) With this in mind, what makes the best floor material for a darkroom, for when I start the basement? Thanks.