I love mine, am adding on to it in the fall and changing the door.

Great pictures! Fortunately, the tree in our way died about a year before we put up our greenhouse (still had to cut it down, though!) We had a furry OSHA inspector too (all extra paws and hands were greatly appreciated.) I love my 10x12 HFGH, enjoying it for my third year. It's totally stuffed with plants, year round.

"- We will add more clips to prevent the panels from flying off in the wind - a major concern."
Sounds like you've read the archived threads here about the recurring problem of lost HFGH panels. In addition to extra clips (we did that too) it's pretty easy to add self-tapping screws to the panels, as even more protection against panel loss. The 10x12 is pretty tall and makes an even worse target for wind damage, but there are some scary threads archived here about wind-damaged 6x8 HFGHs as well. Here are some photos showing how we screwed the panels into the aluminum frame (thanks to previous GardenWeb forum members who suggested this improvement.)
Part Six, Adding the Panels

"- Depending on the temperatures, may add a blind on the western end to prevent sunburn and excessive late afternoon heat."
I definately need shadecloth on the roof, west end, and south side (my succulents and cacti cook in there without it.) I also believe that adding shadecloth has helped to increase the lifespan of my HFGH panels in our sunny climate. (I used Aluminet shadecloth.) Some GardenWeb HFGH owners have reported problems with the HFGH panels deteriorating after exposure to sun, but others don't seem to have this problem. My panels have yellowed, but I see no other signs of deterioration (fingers crossed.)

"In winter, may add water jugs as heat sinks in cooler weather."
In theory it seems like this would help, but the general consensus seems to be that you'd need very large containers of water to retain enough heat to truly benefit you into the wee hours of a cold morning. Most small greenhouses can't afford to give up the high percentage of space required to make this work, but there's lots of good reading on this topic in this forum (posted by folks who are much smarter than I am.)

"- Wish list: shelves, solar fan, temperature activated window control"
Just a warning, the HFGH solar fan is not powerful enough to adequately cool your greenhouse (sounds good, but doesn't quite work.) If you do a search in this forum for HFGH solar fan, there's a thread with a knowledgeable poster sharing his calculations that a 6x8 HFGH would need three of the HFGH solar fans to exchange enough air to drop the temps (if my memory is right.) There are also some posts from folks saying the HFGH vent openers don't last long at all, and it's best to research and purchase other brands that have a better track record.

Good job, congratulations, and happy greenhousing!
Sheri

Hi Sheri - I did read your blog, and got several helpful hints even tho you built the larger GH.

Your photos of the self tapping screws made me rethink attaching the panels, particularly near the door. The clips are pushing the door frame out of square, causing a 1/4" gap at the bottom, so I may simply switch to screws. We're also considering using the aluminum tape to seal the panels directly to the frame, particularly for edges that out of direct sun. Has anyone tried this?

I need to get a feel for the kinds of problems I'll get - tho at this point I may move a lawn chair in there... it's the end of July and tonight it will drop into the 50s !

Sorry to hear about the clips problem you describe, on the panels near the door, wonder if that's a 6x8 problem? I'm sure there are some minor differences in the kits, and I don't recall bumping into that problem before.

Although I found the aluminum tape to be wonderfully sticky when new, after about two years it started to peel in some places, and after three years, much of mine is falling off (even on the sides of the greenhouse that don't get bad sun.) I need to replace all of it that I've used to seal my panel ends (I keep putting it off...) So, just a heads-up on the long-term dependability of that stuff, it might bear watching.

We are finally into our monsoon season here, and enjoying the cloudy afternoons and relief from endless days of full sun and hot temps. But, no 50's temps here yet...!

Hi Sheri

I ordered my HF 8X10 and have been reading your blog very carefully. I just saw your post about the aluminum tape not lasting. Do you have an alternative in mind?

John in Mobile

Howdy John,
Sorry for my slow reply! I can't figure out how to have GardenWeb email me when there's a reply to a thread I have posted to (sometimes I need a bonk on the head.)

I haven't tried this product, but Charley's Greenhouse sells a vented polycarbonate tape specifically designed for sealing the ends of poly panels. I would hope it lasts longer than regular inexpensive aluminum tape from the big box stores, due to the higher price, but I really don't know. (Maybe someone else will pop in here with a comment.)
Charleys Greenhouse polycarbonate tape

You may be able to find other suppliers of similar products by Googling for polycarbonate tape. Also, plain 'ol aluminum tape might last longer in climates with less severe temp changes than we have here. (I think teens in the winter and over 100 in the summer is kind of harsh for many materials.)

I put up my 6x8 yesterday. There are a whole lot of parts but it all seemed to go fairly well. I sealed the edges of the panels but that was the only modification, I'm happy with the sliding door. I may look into a stronger attachment than just the metal clips eventually. It's storming today so I will see how well it holds up before I even get my dang plants in it.