Oop! Yes... I just read that, I didn't skim through all the posts.
Mine were making a mess of their water, so I put their waterer up on 2 cinder blocks. No problems since. I still get poop in the waterer sometimes cause one of the chickens likes to roost on the handle, but otherwise it worked...
Do you have a cold hardy breed? It does make a difference in the end. You could give them extra bedding, perhaps some straw or shavings on the floor to snuggle down in off the roosts if they feel like it. Stack some straw bales along the walls of your coop outside, that'll do wonders. Plastic...