Linoleum flooring in the coop??

[Hokum Coco]

FWIW, our coop has an OSB floor. It was originally built for dogs about 3 years ago but never really used much. It's been used for chickens for a little over a year with no break-down issues. We did paint it with DeckOver, a thick, rubbery-like deck paint. There is no water that gets inside, windows are awning-type that open out, the waterer is in the run. The droppings are contained mostly to the poopboard and the floor is covered with deep bedding.

If you can keep the OSB dry, you shouldn't have any problems. Covering with linoleum with give extra protection.

Thank you for sharing you true life experience.