Ahoy horror-trashcan! Yes, nail or use screws with washers and try to go up the sides 3 to 4 inches. Make sure you use small hardware cloth like 3/8 or so as coons, possums and weasels will reach thru and pull chunks of chicken through those larger holes such as chicken wire. Do you plan on keeping your chickens inside the coop all the time, or do you have a fenced run outside the coop area? I built my coop on top of an old boat trailer so it is up off the ground. The floor is that extruded metal with screwed on large holed hardware cloth. Poop can be washed through the floor or removed via hand tools. Best of luck. I lost two of my new hens to a possum that dug under a smaller first coop on the ground with 2x4 inch mesh fence. He ate his fill and then slept in the nest box and that is where I shot it.