I built an elevated coop, because I wanted a dropping floor that could be hinged on one side and lowered on the other for easy cleaning. Well I built it and used some extra decking composite boards that I had left over from building my deck. However, combined with the pressure treated 2X4's and the size, it is so freakin' heavy that I have to keep it propped up with a 8x8 post block, and had to put up a 2X4 across the back so stop its decent. So I still like the dropping floor concept, however, if I could do it all over again, I would just use a thin piece of plywood and cover it with some cheap lanolium and then just be able to latch it and lower and raise it without all the crap I have to go through currently.