I live in New Hampshire and I am making plans to build a new coop. The coop I am planning will have some sort of transparent roof. We get a lot of snow here, so whatever the material, it has to be strong and not shatter in freezing temperatures! Anyone have any ideas? I was thinking acrylic sheets, but i'm not sure how they'd stand up to the cold or weight of snow, as well as if they would crack or not when putting a screw through them to attach to the roof gables.