Thanks for the greenhouse design. As much as I would like to use polycarbonate, I'm reluctant because I don't want the hassles of getting a building permit. I called the county building department the other day and they told me if it had rigid material ("like fiberglass") it would require a permit (I think it would be exempt if I made it 120 square feet or smaller, but I am thinking more like 600 SF). I saw the
Superpoly that someone else posted here a while back but am now wondering if it would hold up in winds like this. My 20' x 30' "shed" was covered with tarps tied down really good last night but is a joke this morning! I guess if I had supports closer and had them nailed down to the rafters and walls with laths it would have done okay....
