I'm wondering about using corrugated roof panesl (either the metal, or possibly the plastic) on the new coop we're building and how they handle snow? We get quite a bit of snow, and live in an area where we can get significant amounts (upwards of 12in) over-night when the lake-effect kicks in. I'm assuming it works well, provided that the roof pitch is adequate, but would like to get feedback from someone(s) who may have used it. Thanks!