it would save me quite a lot of labor if I could just buy a greenhouse kit, but I seriously question if twin wall polycarbonate in an aluminum frame would be adequate if i would like to grow plants year roundI had planned on triple wall and a treated wood frame that I build myselfopinions? tx!
Double is good, triple is betterPhotoperiod (length of daylight) is important, and you are quite far northThe short winter days will annoy the plants, but not kill themAs the size of the greenhouse increases, so does its thermal mass, and you want the greatest thermal mass that you can afford8 x 6 is awfully smallIt may be a small volume, but the heater is gonna work a lot to keep it at the req'd tempSmall thermal mass means that it will lose heat quicklyIn NW IL, I run a 25 x 25 greenhouse with double-paned polycarbWe got down to -30 FThe plants chugged right on through This includes my cycads, orchids, and agavesIs your greenhouse a lean-to or does it stand alone? How will you prepare the floor to protect against the cold? Lots of stuff to consider.
Have you tried googling it, or going to their website and searching or maybe emailing the company?
