So my husband and I built our chicken coop from scratch back in June. We have recently been noticing water damage in the wood and some mold. We originally painted the coop with barn and fence paint and thought that would waterproof it enough... We were wrong
... So here's my question. What is a safe way to put deck sealant on the coop to prevent any further damage, and not have the chickens breathe in any of these fumes. When will it be dry enough so they can re-enter? They free range all day and are all done laying all their eggs by about noon. Other than that, they are out of their coop all day. So is this safe to do?
Thanks!

Thanks!