After much deliberation about what type of coop to build and how to do it, I think I might actually be purchasing an amish-made coop. I have an opportunity to get one at a fairly decent price locally and I think it might be our best option at this point. I had wanted to coat our diy coop's floor with Blackjack rubberized roofing sealant to ensure the longevity of the floor and to keep out as many bugs and whatnot as possible. Do you think I should still use the Blackjack in the Amish coop? Also, I'm totally paranoid about ventilation. The coop has adequate ventilation, but to be on the safe side, I'd like to add more. I was thinking of adding a vent or two near the top, close to the roof line. Is it possible to do that without compromising the coop's construction? Also, what type of vent would be best? The coop is 4x6. Thanks in advance!