Okay, so I have been doing a lot of research on having an enclosed coop. Right now, I have a 10x10 dog run with a wire mesh top, and corugated metal half roof with a corugated metal back wall for a coop. Free standing nesting box, and multiple roosts. I have purchased a deer blind I am working on modifying to become my enclosed coop, as the corugated metal roof is not providing enough dry area for my girls when it rains, and when we DO have severe weather, I am always scrambling to get everything set up to be comfortable for my girls. I am very interested in the deep litter method for when I finally get my deer blind set up, but I have some questions that just seem to get more confusing when I read other threads about DLM. I have a basic understanding of how it works, but DOES IT WORK IN COOPS THAT DO NOT HAVE DIRT FLOORS? I mean, isn't part of the concept that partial composting of the bedding creates some manor of warmth? How does that work without access to dirt? Is it solely the decomp of the chicken poo that helps the DLM work?