Thanks, and congrats on your new coop. If you are talking about Blackjack #57 for the coop's floor. Well, I was the first on this forum, to use it. The Blackjack I put down on my coop's floor almost 9 yrs ago, today, looks pretty much like it did when it was first done. IMO. it's the best stuff you can use, to protect a chicken coop's wood floor. In my coop, I just poured on on the floor, and pushed it around with a paint roller. I did not go up the walls with it. But it does cover the bottom 2X4"s of the walls.
I use pine shavings in my coop. I do, however, have sand up by the open front. I figured if any rain blew in past the wire, I rather have damp sand, than soggy pine shavings. As far as any recommendations. One thing I have found, depending on how many birds you have in the coop, is in the winter months if the temp is above 25-30 degrees, cracking open the top monitor windows a couple of inches, helps clear up the air inside. In the winter, I found, that my chickens would spend a lot of time in the coop if there was snow on the ground. And if there 20 or more birds in there, the coop can start to stink. So I cracked open the top windows. The air cleared up quickly, and there was still NO drafty air movement in the coop.