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jimmydo2_gw

10x12 HFGH Update

20 years ago

60 Days Left Till I need my Greenhouse functional, I thought I would Post an Update of how its going.

I will refer alot to part numbers, so for someone who has not built one of these, this is probably gonna be all greek to you. For those who have built one, these numbers are probably burned into the back of your brain!

First off, my Kit came without instructions (Purchased in april of 2006), but when they sent me the instructions, they said "Updated 05/06", so some of my Problems may be related to the instructions being newer than the Kit.

So far other than the Instructions, the only part missing is one Number 32 brace

First off the whole Part number 7 issue, the new instructions do not say to find the difference between 7a and 7b. But I did find out later there was a difference in my kit. The holes on the top and the bottoms of the stud were all the same, but the placement of the middle holes do vary, and their placement effect which number 30 brace goes on top on the sides, but not really a big deal.

I am just about to start framing up the roof.

The Frame without the roof is extremely solid, I am quite impressed with the strength so far

I have not decided if I am gonna build it on the ground, and lift it up, or do it as another builder did, on top of the frame.

When I built the foundation/floorplates parts 43/44 did not fit flush when bolted togethor with parts 45 and 46, so I had to redrill the holes, to remove the gaps between the floorplates.

I used Gardenerwantabe's Corner Reinforcements, but cut the angle aluminum, and Square tubing 12 inches long, since the stock was 48 inches long.

I used Oray's short EMT tubing cuts to reinforce the Studs to the floorplates.

The floorplates themselves are imbedded in a 10-1 mix of Dirt and cement(This was recomended to me by another member here to create a Barn Floor), which will be floor of the greenhouse. (Yes I actually followed the instructions for the foundation, and actualy buried the floorplates, rather than bolting them to wood) (But then I live in the desert, our dirt here is very dry, only 2.5 inches of rain so far this year)

The instructions still incorrectly state to put the top door track on the Inside of the numnber 7 studs.

I used a 10 foot steel wall building stud to reinforce the uper pair of 31 rear braces. (I put the 31's in the channel of the stud, and then bolted the 31's to the wall through the stud.)

My 78's and 79's are square tubing, rather than angled aluminum, which makes for an interesting mess.

The Instructions actually call for the top 31's to both be attached to the lower holes on the part 79 reinfocements, which makes for an interesting bend, but if you put one of the 31's in the top hole, then it blocks the 80 diagonal from connecting in the corner.

The other odd thing was that the holes in the rest of the number 31's were all spaced wrong (I know this usualy means you did something wrong when all the holes are wrong, but I checked all my studs and they are all perfectly vertical).

The odd thing is that the holes all lined up if I placed the 31's at about a 20 degree angle, it looks funny, but I think being diagonal gives the rear structure more support.

On a side note, all the bolts have been the right lengths, but the instructions still do not indicate the correct number of bolts to slide into the Studs (it should state, 4 long on all the Number 14 studs in the middle), but it does indicate the correct bolt placement for the End studs, (Long bolt, Longer bolt, Long bolt)

I can not get full functionality out of the Harbor freight Automatic vent openers I purchased (I purchased five, and none are working for me), it might be an altitude thing, I am over 3000 feet here, and I can not get them to close at any temperature (Including in my freezer).

Whats gonna happen over the next 60 days

Build the roof and finish the frame

All four vents will be on the Leeward side of the roof

Put two 10 foot EMT tubes as cross braces ala Oray.

I am also thinking about two 12 foot EMT braces to go Lengthwise. (all this bracing could also be used as described below)

Seal the ends of the panels with 100 MPH speed tape

Put thin weather stripping on panels

Install the panels using Caulk and triple the amount of glazing clips

(Another side note here, the new instructions, show them using some new fangled glazing clip (Looks like it might be a peice of plastic)(Perhaps someone who has bought a newer kit could let us know)

Panels that will be experiencing the brunt of our winds, will also be getting some self taping screws.

Install a louver vent (Thanks for the Link Oray)

Install a Box fan with thermostat control ($18 from Lowes)

Move in Water drums as heat sinks

aquire shelving from Lowes (They have a great 24"x48" 4 shelf unit that can be assembled as 4 seperate shelves 18" tall, two of these would provide me plenty of shelving, albight 18" off the ground, but since I will be in a chair that should be just the right height.)

Install a timer controled (20 seconds every 5 minutes during the heat of the day) misting system with one line going along the apex of the roof, and perhaps one line on each side about 2 feet from the walls, suspended from the emt tubing.

Install the Timer controled drip system.

Oh yeah, I need to move the plants into the greenhouse!

My Biggest hurdle this winter will be to keep the greenhouse cool during the daytime this winter (My cheapy, leaky poly tarp greenhouse hit 120 degrees during the daytime last January.

I am wondering if perhaps Shadecloth on the roof year round might be mandatory.

I have a feeling the next 60 days are gonna go realy quick. It is hard to imagine winter temperatures as I am outside working in temps that are still hiting 100 degrees!

If you got this Far, thanks for reading my Ramblings, and if you have any comments or suggestions, feel free to pipe in!

Overall I love this greenhouse for the price $480 with the coupon, about $300 of accessories and reinforcemnts, and I am going to have a fully automated 120 Square foot greenhouse for under $1000

Comments (14)

  • 20 years ago
    last modified: 11 years ago

    Sound good Jimmy. I knew you would GetR done.
    I would call HF and tell them you want to return the openers, sounds like they are faulty

  • 20 years ago
    last modified: 11 years ago

    I was thinking about returning them, but sinc They were all bought at three different occaisons, I want to take them down to sea level and test them down there first, It would not do any good to replace them and have them do the same thing.

    I was wondering if there is anyone out there using a different brand of openers, at elevation?

    I would hate to drop $250+ for a different brand of Opener, only to have the same probem

  • 20 years ago
    last modified: 11 years ago

    Sound good Jimmy. I knew you would GetR done.
    I would call HF and tell them you want to return the openers, sounds like they are faulty

  • 20 years ago
    last modified: 11 years ago

    54 days to go, and I just spent another $160 for the greenhouse. I dunno if I can count it to the actual cost of construction though, since it is for my watering system, and no mater what greenhouse I built, I would have to spend this money.

    But now I have everything I need to run 1/2 inch drip line around the perimeter of the greenhouse, as well as three mysting lines, on two seperate timers, the misters are on seperate timers (stations) from the watering, so I can use the misters for Temp control, humidity control, or plant misting, as needed.

    Now I just need to talk one of the Nieghborkids into making me a POtting bench out of the Kitchen Sink I found in my sideyard ;)

  • 20 years ago
    last modified: 11 years ago

    We want to see some pictures of that thing when you get it done.

    GET-R DONE JIMMY GET-R DONE

  • 20 years ago
    last modified: 11 years ago

    Wilco!

    not sure how soon that will be, I over did it last week, so I am running slow this week.

    I almost made a bit of a mistake, I brought all the panels into the Living room to tape them in the evenings, and almost peeled off all the Protective film... but the part numbers are on the film, I am sure I could have figured it out, but still it would have been annoying

  • 20 years ago
    last modified: 11 years ago

    Allright up till now I had though the most tedious and repetitive part of building the greenhouse was making the 6 inch EMT reinforcements for the Foundation... But there is now a New winner...

    Taping the panels, wow, 75-90 yards of taping, ouch my fingers are very sore.... but that may be nothing compared to the aproximately 160 yards or Caulking I will be doing sunday!

  • 20 years ago
    last modified: 11 years ago

    Well I have a Box now ;) it took 4 people 8 hours, but We got all my Panels installed, all panels have a clip every 18 inches or so, are caulked around all the edges, and have screws on the top and bottom (where possible)

    Now, I need to get my Vent openers tweaked (The HF Openers are Gas Charged, not wax, so they are affected by altitude)(I have had to open them up and remove some of the oil from each one, and get them working for my altitude), after they are tweaked I can install them. I will be installing my Louvered panel tomorrow. It is too hot inside, even with the doors open to do any other work inside the greenhouse right now.

    Once that is done, I can finish the electrical and water hookups

  • 20 years ago
    last modified: 11 years ago

    Jimmy how did you drain the oil. Did you actually unscrew the ends. Did HF suggest this.This is something that I have never heard of before. I assumed that they had wax like all the others.

  • 20 years ago
    last modified: 11 years ago

    I am at 1,700 feet, have two HF vent openers, and both work fine. You should note that if you simply put them in the freezer, they will not close as the spring keeps them open. They need some kind of weight to compress the spring and close them.

  • 20 years ago
    last modified: 11 years ago

    The instructions that came with mine said to remove them in the winter if you don't keep heat in the GH because temperatures below freezing would damage them.

  • 20 years ago
    last modified: 11 years ago

    I will have to keep my openers installed year round. We have a weird climate, and without opening the vents during the daytime, I could easily get temps inside the GH exceeding 110 even during mid winter!.

    The good news is, the point of this greenhouse is to keep my Citrus from experiencing temps below 32, so the openers should never feel temps below 32

  • 20 years ago
    last modified: 11 years ago

    Oh wow, this little lifters are stronger than I expected.

    I over filled one of the lifters and it ripped the brass endcap right off. It did not strip the threads, but actualy tore the metal just above where the threading stopped !

    Also a Note for people who are going to be caulking, we used about 10 Tubes of Caulk

  • 20 years ago
    last modified: 11 years ago

    Harbor Freight did not suggest this. Lets just say that Harbor Freights Tech support was, um Harbor Freight... I have to admit it was nice, they Cross shipped me new ones, which performed the same as the old ones.

    I found an overseas manufacturer of similar "budget vents", I think they were called Thermofor, who was very helpfull, and gave me a suggestion.

    I unscrewed the endcap that has the adjustment screw, and press the plunger till the seal almost comes out, then the oil will start to leak if you press softly on the plunger (If I pressed hard the seal comes all the way out, and you get a big mess ;) then close the whole thing and test. THrough trial and error, I now have all five of my HF openers opening between 65 and 75 degrees.

    Gato, I am not sure why mine did not work, and yours did, I am only 1300 feet higher than you, but I had a Total of ten from HF (The first five and the second five). Even at 38 degrees they were open five inches under load before I modified them ;)

    I would not recomend that anyone else try this, because I am sure it voids the warranty. (I tried it on just one first, then got bolder and tried the rest.

    I did spill all the oil out of one, and I replaced the oil with Cooking oil, even this one is now working ;)

    so I guess I will have to wait and see if opening them is gonna cause any long term ill effects.