Yes, ours is stapled down every few inches and then hubby added those wood slats over the edges, (painted lime green in my photo) so nothing can even get underneath the edge.
The nesting box, (with the laying area on a slant to allow eggs to roll down) has a swivel latch on the right side for that drop down access door, that latch has a clip on it so the raccoons can't open it. In the summer, we prop open the windows slightly, those have hardware cloth.
Raccoons are very clever, as you know, they can manipulate their paws into all kinds of things so you have to think of all the potential possibilities, Google them, inform yourself of all those possibilities, and then prepare for them before tragedy strikes. We lost two when I forgot to close coop door one night, a fox came in at 7:30 in the morning. We now have an automatic door opener that runs on solar power, set to open in AM and then after they return to coop, it's adjusted to the sunrise and set throughout the year. Still has a potential of having a critter sneak in if they time it right but so far so good.
I try not to think about how expensive their eggs are!
