Hey all... My wife said I can turn our 3 season porch into a greenhouse. It has sliding glass doors on 3 sides and a wood framed roof. I would remove the roof leaving only the framing, install Polycarbonate on the roof joist. Add fans and a furnace. It has a concrete floor but I think I would skim coat the floor to pitch water away to drain. The other option is to leave the insulated roof and use lights like metal halite and led systems... Any Ideas from any one.. The space is about 12'x 25' x 11' and the highest spot and pitches down to 8'. I'm in northern Ohio so heat is a must from October until may. Just looking for anyone who has tried to build there own. Any tips or comments..