You can bury the ground contact wood (or cement blocks) so they are less than an inch high. It won't be as much protection but will help enough to be worth doong. You might still check and redo the stain on the legs a little more regularly.
Chickens exude (through respiration and poop) more moisture relative to their size than most animals. And at least their share of ammonia. And have very small lungs relative to their size so are very susceptible to respiratory stress (such as dampness and ammonia). It is essential to their...