Hi Darrell, if I were to "solidify" the back wall I think I'd cut TechShield panels (foil side facing-in) to fit between the studs, and then secure them with horizontal braces that are bolted to the studs & corners--not sure maybe perforated steel or something. Then to dress-up the outside I might screw siding into the TechShield (I think it's thick enough such that it would clear or be-even-with the studs). I know you said "rigid foam" but thought I'd toss this out anyway... Here is a link that might be useful: Our 10x12 HFGH

Ray, Your pictures are great! My DH and I saw the 10 x 12 GH for sale in the HF magazine for the first time today, so I've been reading this thread and others with much enthusiasm. How do you feel about your HFGH now? I was feeling discouraged after reading other posts, but after seeing your detailed pictures and instructions feel that we can tackle this and be quite satisfied. Lisa

I've built a shelving system along the back wall which makes it extraordinarily strong--it doesn't bow-in at all anymore where it previously moved 1/2 to an inch in a typical South wind. I used 3/4" galvanized pipe for the vertical supports, and 3/4" EMT conduit for the horizontal supports, which for the front-edge of the shelves pass-thru the galvanized cross- and tee-fittings, whose threads had to be ground-down just a little so the conduit would slide-thru. I'm real happy with the way it came together--the trickiest part was getting the installation "staged" properly: 1. Grind-out threads in the fittings for the side-to-side conduits 2. Make the two vertical posts (floor flange, 36" pipe, cross, 18" pipe, cross, 18" pipe, tee) 3. Flatten one side of three 10' conduits, thread these thru fittings and posts 4. Flatten other side of 3 conduits, drill holes, put assy into place, secure sides and floor flanges 5. Weld "L" brackets into one end of short (22 1/2") conduits (twelve of these) 6. Screw short conduits into each fitting and rotate into place 7. Cut cattle panel (2"X4" mesh) and wrangle into place from the side (having taken a side panel out temporarily) Look for "Details" in my photo link below. I think I'm done now with structural issues of the HFGH. Still have to build a potting bench, and we've been shocked to learn how hot the thing gets (over 100 degrees inside in 75deg sun out). So we have to do an exhaust fan/louver intake plus prolly some shade cloth. But the GH seems strong enough now that we shouldn't have to worry about it blowing-down, though the roof vents seem to twist a lot when open and it's windy--may have to make some further mods there. Here is a link that might be useful: Our 10X12 HFGH with Details

Bob...I'd change my priorities. Get rid of the wife first...anyone that rips out a plant, stomps it into the floor, etc. is going to be a pain in your side in the future and I'm certain she's been that in the past. Replace her with a dog...they know how to give unconditional love...then go for whichever greenhouse you want. Learn to be happy again and not obsessed with worries. For years I dealt with someone that would threaten suicide whenever she didn't get her way...or feel properly coddled. After years of enduring that we separated...eventually divorced and thank God she moved to another state. She no longer could get her way with her threats or nastiness. My life has changed totally. I'm no longer the quiet, cautious, think-everything-over-five times and then do-nothing guy. Think it over, get counseling, take it slowly...but if your life is one of worrying about plants destroyed, avoiding nastiness, busted windows from her throwing things in rage, etc...change it and be happy.