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MY 22.5ft Hemlock Dome Green house  RSS feed

 
Matthew Gorham
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Location: Upper Kingsclear NB, Canada
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three years in the making and finally getting the dome construction underway, hope to have it enclosed by end of the week.

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Michael Cox
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Location: Kent, UK - Zone 8
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Looks fun...

Are you planning on glazing all directions, or just the southern aspect?
 
Matthew Gorham
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Location: Upper Kingsclear NB, Canada
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I plan on glazing all directions and then insulating the base and the Northern triangles.


 
Kelly Smith
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Location: In a rain shadow - Fremont County, Southern CO
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these types of greenhouses always interest me.

im interested to see how this turns out.

 
Matthew Gorham
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You and me both Kelly
 
Matthew Gorham
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Worked until dark last night,

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Lee Daniels
Posts: 63
Location: Eastern WA -- 5b-6a
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Cool!! I'd also be very interested, and interested how you'll control temp and humidity.

Thanks for sharing.
 
Matthew Gorham
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Location: Upper Kingsclear NB, Canada
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my plan is to put a window on the east and west sides as well as two windows near the top of the dome. Currently trying to source temperature activated window openers.

Hopefully this will help regulate temp and humidity, I also have planes to setup a micro controller to monitor soil temp, air temp and soil moisture.

But that is down the road a bit.


matt
 
Kelly Smith
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Location: In a rain shadow - Fremont County, Southern CO
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Matthew Gorham wrote: Currently trying to source temperature activated window openers.

matt


im not sure if this helps or not, but i have seen these types of vents used on geodesic greenhouses:

How automatic vent openers work: Vent openers do not require electricity. The opener has a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling.

http://www.littlegreenhouse.com/accessory/vent2.shtml

i have seen them setup to open inward - that way the wind doesnt rip it off

of course, if you have electricity there, there are far more options.
 
Paul Andrews
Posts: 155
Location: Cornwall UK
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Fantastic. I am also building a geodesic dome greenhouse but work has taken over at the moment but I will get it done soon I promise

Paul
 
Matthew Gorham
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Location: Upper Kingsclear NB, Canada
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One more piece and dome will be enclosed.

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Matthew Gorham
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Last piece installed!!
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Matthew Gorham
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raised bed design

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Matthew Gorham
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Max temp in dome today, two windows open and no door
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Lee Daniels
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Location: Eastern WA -- 5b-6a
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Toasty warm. That is 120* F. I'd verify sensor placement. It should not be in direct sunlight. Circulation fans will help - if you care at this point, prior to plants. Looks great


- L. Daniels
 
Matthew Gorham
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No roof vents yet, sensor is on the north side about half way up
 
Matthew Gorham
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Half of the raised beds installed, still have to insulate wall and ground.
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Kelly Smith
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Location: In a rain shadow - Fremont County, Southern CO
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wow, looks great.

do you think you will need more windows for cooling? maybe some shade cloth over part of it during summer?
 
Matthew Gorham
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I do have plans to add some roof vents like the windows, I am also trying to source a large water tank or shipping tote to hold water. That would help regulate temps.
 
Matthew Gorham
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Added a light for night work!!!
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Kelly Smith
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Matthew Gorham wrote:I do have plans to add some roof vents like the windows, I am also trying to source a large water tank or shipping tote to hold water. That would help regulate temps.

sounds pretty similar to "grow domes" that i see scattered across CO

will you be piping air under the soil to keep it warm during the winter too?
 
Matthew Gorham
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Yeah i may do that if i can scrounge some piping!!!
 
Matthew Gorham
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found a source for a few ibc totes, may put in a small aquaponics systems as well, we will see.
 
Matthew Gorham
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beds are all done, and now time to finish insulating
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Lee Daniels
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Coming along nicely. Is there anything under the raised bed floor insulation? Looks like 1" ridged foam board on top of compacted crushed rock. Any plans to heat the bed? Or just insulate.

- L. Daniels
 
Matthew Gorham
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I may pipe some hot air in from the top of the dome, but currently have no plans for a heating system. Would love to do a RMH, but need to do more research.
 
Matthew Gorham
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Aquaponics tank and bed setup, plumbings next.
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Alex Goozoon
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great project
please how did you layed the dome and ponywall? directly on the ground? or what is it? Have you used cedar wood or some hydroisolation?
Where have you placed the entrance, please?

You used foil for covering, do you think to have greens in the winter, too?

thanks
 
Matthew Gorham
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Location: Upper Kingsclear NB, Canada
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Alex Goozoon wrote:great project
please how did you layed the dome and ponywall? directly on the ground? or what is it? Have you used cedar wood or some hydroisolation?
Where have you placed the entrance, please?

You used foil for covering, do you think to have greens in the winter, too?

thanks



Hey Alex,

I built my dome directly on gravel and it drains very well.. The dome is made out of hemlock which i pretty rot resistant. IT is covered in 8mm poly that is uv protected. I dont think i will be able to grow in the winter but should be able to get 2-3 extra months of grow season.

this is where the door is located,
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Alex Goozoon
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do you have a closer look to 8mm poly you used? or url to check? please
and what about the entrance? south, south-east?
 
Matthew Gorham
Posts: 42
Location: Upper Kingsclear NB, Canada
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entrance is southeast. This is where i bought the poly from

http://www.greenhousepoly.ca/
 
Matthew Gorham
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Update, roof vents are installed beds have been filled with top soil, peat moss and sheep manure. Beds are all planted.
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Alex Goozoon
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Thanks
How big is it?
 
Matthew Gorham
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Location: Upper Kingsclear NB, Canada
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Like the title says, 22.5 across and 12.5 feet tall.
 
Alex Goozoon
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projected my yourself or you bought the plans, please?
 
Matthew Gorham
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Location: Upper Kingsclear NB, Canada
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I purchased plans from http://geo-dome.co.uk/
 
Matthew Gorham
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Installed door today, not square, but a door none the less.

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Matthew Gorham
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Trimmed out my raised beds and starting to see some plants come up, ****IT Works****

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Matthew Gorham
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Dome party
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Matthew Gorham
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Added some clay to my grow bed, and some more grow pics.,
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