Hey everyone, I'm almost ready to install my windows in my 16x20 cabin in willow. I have 4 wood windows and 2 vinyl. I have a couple questions. Should I tyvek before I install windows? I'm guessing so. Also, is it necessary to wrap the opening with that sticky building paper?? Or is it alright to simple hoist it in, shim to fit, foam seal and be done? I Have 2 foot over hangs. Thanks!