Nice job! Looking forward to more photos as you move along. Looks like you've done your homework. Here is a link that might be useful: Building our HFGH

That is a nice link you posted there. I am sory but I do belive the webpage title greenhouse.gov actually means "green"-house as in energy efficent not Greenhouse for storing/growing plants. The only place I read where they say not to insulate the floor was if I was trying to cool the house. As I said earlier I am using this greenhouse for winter protection. The R values that they use in Austraila are measured differently then here. I can only imagin that R 1.5 would be close to the same as our R 13 for exterior walls and R 30 is normal for cielings here but they call it R 2. Below is from the Department of Energy link..... Insulation Priorities It is most important to: Insulate your attic to the recommended level, including the attic door, or hatch cover. Provide the recommended level of insulation under floors above unheated spaces, around walls in a heated basement or unventilated crawl space, and on the edges of slabs-on-grade. Use the recommended levels of insulation for exterior walls for new house construction. When remodeling or re-siding your house, consider using the levels recommended for new construction in your existing walls. Next Section - How Does Insulation Work for You? Here is a link that might be useful: Department of Energy

Good morning Jeymac, Iâve been happy with the solution of putting wood framing along the inside of the base channel. I do think it strengthens it somewhat (prevents the c-shaped channel from flexing as easily.) Also after years of living with the greenhouse, I think the bottom of that channel would have been a great catch place for bits of gravel, plant leaves, dust, bugs, and other greenhouse debris. Having the wood there makes it look cleaner, and it really does stay a bit cleaner too. Iâm sure my wood does not look as pristine as it did, years ago, after I slobbered water all over the benches, week in and week out. But I never notice it, back there under the benches. Neither my husband or I can recall what Gardenerwantabeâs base braces looked like, although I bet at the time we looked at those photos and considered that. We must have decided they were not critical, along with the wood we used, as we are both drawing a blank on what his braces were. I guess we are getting old? I donât really have any knowledge of anyone else using braces on their base to strengthen it, so I donât think itâs a deal breaker, but I do understand the wisdom of thinking through any options for adding strength as you go. I donât have a great source of larger photos for the details of joining two greenhouses together, although I try to watch for that on the web, since the question of joining two greenhouses comes up fairly often. There have been a few folks who have mentioned doing this on GardenWeb, but I donât think any have posted step by step close up shots. Funnylady has been super nice when we have emailed, and I hope she can give you more specific answers. If you folks do join two together, you might consider doing a thread on Gardenweb with the nitty gritty details of how you joined them....Iâll bet others would thank you, down the road! So many times, I find that everybody who builds one of these seems to find their own way for resolving some of these questions. I know we did, too; we researched everything we could ahead of time, but often ended up finding our own solution, based what seemed practical at that moment...what we could find in the garage to use...and/or what we could find in the aisles of Lowes. In other words, on most any of these modifications, youâll find there is more than one way to skin the cat...and the way you find may well be a better solution than what other folks have done. I didnât make any notes about the length of the bolts we used with the EMT, but since the EMT is ¾â, weâre guessing maybe 1 ¼â bolts. Just enough to slip through the drilled EMT and add a washer and nut. Best of luck with your build!

Here's some more pictures of the bracing. As you can see the weather is better today so I was able to work. Tonight after the kids go to bed I'll seal the ends of the panels with caulk so they can cure. This is the side wall where the corner braces and side wall braces connect. They are anchored at the top of three center most studs. Showing where the ones connect on the back wall And a closer view on the back wall. Bracing this wall is mandatory as far as I can tell. Far too much give in it as designed. This thing is rock solid now. Its going to take some major wind to hurt it. I'm a huge fan of this green house and the design (for the most part). The track design to hold the bolts makes adding stuff down the road super easy. I'm already thinking of adding bolts to let me attach shade cloth to the inside of the roof. Grommets in the shade cloth and fender washers would allow you to attach the cloth right to the ceiling snugly. The back wall at the peak is just begging for a fan too. I won't caulk the panels in so I can take them out to add things to the structure as needed. Oh the options are endless!!!!!!!