A little late now but I'd still like to know. About 3 months ago I built my first chicken coop. I know that making the walls and floor of the coop with particle board is probably the worst material to make it with but money was the main problem that made me go that route. I made sure to lift the coop off the ground so there is about 8 inches between it and the dirt. I put Thomsons Wood sealer on the wood along with painting the outside of it with oil based paint. I tried to seal up all the cracks with waterproof/resistant silicone. The roof has shingles on it, though if I had the chance I would definitely go with metal. So, with this information can and of you tell me about how long you expect this coop to last? Also, I live in Kentucky so that's the weather we're dealing with.