Leela Olson wrote:
Scott Foster wrote:Does anyone know of a good hoop house plan or an alternative.? I'd like to do something a little more permanent than PVC but at the moment that's the way I'm leaning. I don't have a backhoe or a tractor so anything I do will be done by hand. I'm looking to plant seeds out a little earlier and to start a little nursery. And let's face it when there is snow on the ground, I'd like a place to kick around on the weekend.
I imagine having some water barrels and possibly some compost to keep it above freezing but I don't want to run electricity.
We built this for chickens. It's about 10 x 10. I used plans from John Susckovich's smaller chicken tractor (we built one of those too). We added a tarp for now, and will put on greenhouse film shortly for winter roll up sides and some vents. Install nest boxes too. It is SUPER tall. Something like 10' in center and since there is a knee wall will be great if I decide to turn it into a seedling greenhouse in the spring.
Todd Parr wrote:
I love that one. You adapted the plans from the smaller one to make this?
Leela Olson wrote:This is the John Suscovich model. Farm Marketing Solutions is the name of his site that has plans. It's small though, suitable for knocking your head a lot. Would be good for a tractor for a few chickens raised for meat. I use it for growing out cockerels for my breeding program.
I think it's around 6 x 9
Leela Olson wrote:Our need for a couple of quick structures for winter has led us to the idea of using our dog kennel panels (200' of them!) to build two 15 X 30 or so hoop coops. We will attach 1" or larger diameter pvc conduit (grey) for the hoops, every 2' and put in a center beam and support poles to help shed snow. We will do a gothic peak with elbows.
This will give me 6' of side wall to set up individual breeding pens or cockerel pens if needed. One house will be for girls only, no cocks allowed
Scott Foster wrote: PVC will be cheaper, but the chain link top rail and metal will last a lot longer than PVC. Most PVC isn't intended for prolonged exposure to UV rays.
Mike Jay wrote:
I think I see the door in the back of the greenhouse. Can you have it open outward? Although I may be misunderstanding the problem
Thomas Vincent wrote:Scott,
I have built three cattle panel hoop houses. They are incredibly easy to build but small hoop houses have a few drawbacks you need to be aware of.
First, because of their small interior volume, cattle panel hoop houses are incredibly sensitive to temperature fluctuations. When the sun is shining it is not uncommon for the inside temp in mine to be a full thirty degrees hotter than the outside temp. Conversely, when the sun goes down, if the temperature drops, because of their lack of insulation, the temp inside a small hoop house is every bit as cold as the outside temp.
Ironically, this means that instead of providing a stable growing environment for seedlings, a small hoop house actually can create an environment with greater temp. Fluctuations than if you simply put your flats out in the elements.
Because of this problem I have had to repurpose two of my hoop houses as poultry runs. (Nothing gets wasted) i am currently experimenting to see if adding a second layer of plastic with spacers in between can add a layer of insulation and ameliorate temperature fluctuations. Will have it work? No idea. I will be posting my results on my weblog tinkersblessing.com
Hope that helps
Mike Turner wrote:Built this cattle panel hoop house 2 years ago. 50 feet long by 10 feet wide with a door at each end. Foundation of 2x6 boards staple rebared into the ground with the cattle panel stapled to the board. I remove the greenhouse film in spring and replace with 30% shade cloth. In the fall, the shade cloth comes off to be replaced with greenhouse film. Growing figs, citrus, and vegetables inside.
Robert Hinrich wrote:I realy like Travis Johnsons idea. In fact I am preparing to build a 24x40 model of one. The down side is you must have at least some wood working skills. Here is a great video and this guy has plans. https://www.youtube.com/watch?v=nOGV3ucTLsE&list=PLrbDUR_E5-dMOnQ4RFF6AMHwhO2xCorBl
Thomas Vincent wrote:Scott,
I had actually thought of using a blower. (In the picture of mine you can see a small vent fan that runs off a Tractor Supply solar panel.) but in the end I decided it was adding a layer of complexity I didn't need. The chief advantage of the cattle panel design is its simplicity.
I do like the idea of using water pipes as spacers. Too bad I'm almost finished with the retrofit. Just in time. Night time temps here in the Pacific Northwest are going to be in the thirties tonight!
I am amazed by the elegance of some of the designs on thus thread. Some creative posters out there.
chris thorpe wrote:I grow tomatoes, aubergines, bell peppers and chilies in the summer and salads and carrots in the winter. After reading one of the other posts, I'm thinking of adding shading in the summer as the temperature got up to 55C this year even with the doors open permanently.
Thomas Vincent wrote:Scott,
Finished adding the second layer of plastic on my cattle panel hoop house.
See my blog for pictures: tinkersblessing.com
Mixed results so far. Tried one of those flowerpot heaters last night with three tea candles. Was surprised that the temperature actually went up a few degrees. Unfortunately tea candles don't last very long so the temp this morning was same as outdoors again.
Read a post about prevention of cold air infiltration being critical to retaining heat so I spent the morning sealing up all the cracks I could find. Overcast day today in the forties. Not much solar gain. Inside temp remained same as outside. Tomorrow I plan to replace the roofing felt on my water barrels with black paint. Will add some black ceramic tiles and some black milk jugs as well. Bound and determined to have a passive solar growing space where the inside temp is above freezing in the morning.
Thomas Vincent wrote:Okay, this one's for anyone who's still following this thread. Yesterday I finished adding a second layer of plastic to my cattle panel hoop house. Spent two hours sealing up the seams. Still not hermetically sealed but reasonable. This morning I come out. Seven thirty AM, overcast, outside temp is 41 degrees F inside temp is 39 degrees! It's actually colder inside than outside! .
It's sure got me stumped.
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