Square Foot Gardening Forum
[table bgcolor=#000000 height=275][tr][td]
Green House Floor Insulation? Toplef10Green House Floor Insulation? 1zd3ho10

Hello Guest!
Welcome to the official Square Foot Gardening Forum.
There's lots to learn here by reading as a guest. However, if you become a member (it's free, ad free and spam-free) you'll have access to our large vermiculite databases, our seed exchange spreadsheets, Mel's Mix calculator, and many more members' pictures in the Gallery. Enjoy.

Green House Floor Insulation? I22gcj10Green House Floor Insulation? 14dhcg10

[/td][/tr][/table]

Join the forum, it's quick and easy

Square Foot Gardening Forum
[table bgcolor=#000000 height=275][tr][td]
Green House Floor Insulation? Toplef10Green House Floor Insulation? 1zd3ho10

Hello Guest!
Welcome to the official Square Foot Gardening Forum.
There's lots to learn here by reading as a guest. However, if you become a member (it's free, ad free and spam-free) you'll have access to our large vermiculite databases, our seed exchange spreadsheets, Mel's Mix calculator, and many more members' pictures in the Gallery. Enjoy.

Green House Floor Insulation? I22gcj10Green House Floor Insulation? 14dhcg10

[/td][/tr][/table]
Square Foot Gardening Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.
Search
 
 

Display results as :
 

 


Rechercher Advanced Search

Latest topics
» Tree limbs?
by davidtuthes Today at 3:44 am

» What Have You Picked From Your Garden Today
by sanderson Yesterday at 9:41 pm

» Sanderson's Urban SFG in Fresno, California
by sanderson Yesterday at 9:39 pm

» What are you eating from your garden today?
by OhioGardener Yesterday at 2:30 pm

» The SFG Journey-Johnson Su Bioreactor for composting, No turning
by has55 Yesterday at 9:10 am

» Steves first SFG
by markqz 12/5/2021, 2:43 pm

» Catalog season has begun!
by Scorpio Rising 12/5/2021, 10:34 am

» Mary Mary quite contrary, how does your garlic grow?
by sanderson 12/4/2021, 7:05 pm

» N&C Midwest—November/December 2021
by nrstooge 12/4/2021, 5:02 pm

» cabbage pest??
by sanderson 12/4/2021, 3:26 pm

» Sauerkraut & fermenting veggies
by sanderson 11/25/2021, 6:23 pm

» Kombucha
by anabelarto 11/25/2021, 9:34 am

» Happy Thanksgiving 2021!
by sanderson 11/25/2021, 1:21 am

» Happy Birthday!!
by sanderson 11/23/2021, 4:03 am

» Hi from Las Vegas
by OhioGardener 11/22/2021, 11:35 am

» Another hello, Australia - Perth
by Simso 11/20/2021, 7:47 pm

» Anyone grow okra?
by sanderson 11/18/2021, 10:44 pm

» CANADIAN REGION:What are you doing July to December 2021
by Kelejan 11/18/2021, 9:46 pm

» Closing beds for winter
by sanderson 11/18/2021, 2:30 am

» Steam canning?
by sanderson 11/18/2021, 2:28 am

» Where food comes from - a Poem
by Yardslave 11/17/2021, 11:23 am

» Fitness Trackers/Fitbit Users
by martinjery 11/15/2021, 9:29 am

» 2021 SFG in Brooks, Ga
by sanderson 11/14/2021, 8:42 pm

» November: What to plant in Northern California and Central Valley areas
by sanderson 11/14/2021, 1:53 pm

» California's Drought
by sanderson 11/14/2021, 1:45 pm

» N&C Midwest — October 2021
by sanderson 11/14/2021, 1:25 pm

» Hello from the UK
by yolos 11/13/2021, 11:05 pm

» can you identify this insect
by sanderson 11/12/2021, 11:46 pm

» Ladybug, ladybug
by sanderson 11/12/2021, 8:37 pm

» Famous Gardening Quotes
by sanderson 11/12/2021, 3:55 pm

Google

Search SFG Forum

Green House Floor Insulation?

3 posters

Go down

Green House Floor Insulation? Empty Green House Floor Insulation?

Post  marcia@thekats 5/25/2012, 7:35 pm

I am planning on a greenhouse purchase and live at 6000' in Montana and want to insulate the floor. This would be a hobby greenhouse. Does anyone have an idea of a good way to insulate the floor?
marcia@thekats
marcia@thekats

Posts : 1
Join date : 2012-05-25
Location : Hobson, MT

Back to top Go down

Green House Floor Insulation? Empty Re: Green House Floor Insulation?

Post  dsfin 5/25/2012, 11:52 pm

Hello Marcia,

I've got some past experience with greenhouses at the commercial level.

First, I would say that you really DON'T want to insulate the floor of a greenhouse!!!
Think of the floor as a potential heat sink (heat storage) that will collect heat during the day and release it at night.

But I understand your question. Though I don't have experience at that elevation (6000ft), I realize your issue as you have cold nights and probably very cold winters and you want to capture and retain as much thermal energy the sun will provide.

There are some interesting ideas that could be utilized on larger greenhouses (those with a better ratio of floor square footage to the interior volume within the greenhouse). But I don't think those ideas or methods make sense (cost is high & affect is minimal) for a hobby greenhouse.

But never the less, there are some things you can do!!! For the floor treatment I would recommend first a layer 3-4" of crushed rock as the floor (for drainage). Then cover that with black ground cloth/plastic (to help absorb the the heat). Not sure if you will be growing on the floor or will be utilizing benches, but the black covering on the floor will help with trapping heat into the floor.

Aside from the floor, if you plan to have some sort of bench system in the GH, you also can utilize 55gal drums (also painted black) filled with water. Realize that the drums of water take up precious space in a GH, but could work well if you build your benches over the top of them! The drums of water will retain heat as well.

Another suggestion I can offer to you is dependent on how your GH will be constructed. The suggestion is to vertically line the perimeter of the GH with 2" thick Styrofoam. 2" thick and 2ft deep from the floor level down. Another similar method would be to provide a concrete foundation (2ft deep) for the GH to sit upon. Either will help your floor to retain more of the heat it absorbs. Some heat will escape the floor heat sink along the perimeter of the GH otherwise.

Other insulating ideas:
1) Dbl layer poly covering (inflated).
2) Styrofoam or other insulating materials used around the perimeter above the ground on the sidewalls and endwalls.
3) Or better still, a GH that is oriented east & west (the length of the GH) and then totally insulate the north wall. A GH that is oriented this way captures more light and heat than any other configuration.

Hope that helps!!!

---Dave
avatar
dsfin

Male Posts : 51
Join date : 2011-03-10
Age : 64
Location : Milton, WA; PNW - Zone 7-9

Back to top Go down

Green House Floor Insulation? Empty Re: Green House Floor Insulation?

Post  Turan 5/26/2012, 12:21 am

Green House Floor Insulation? 396615 Marci

I live south of you in the Gallatin Valley. My greenhouse is not double walled and leaks like a sieve so I have not tryed to keep plants growing in it all winter. Other people do though. I have not heard them speak of insulating the floors, they plant in the floor. What these greenhouses have is a double film that has a fan that keeps the walls inflated, thus insulating a lot. Black barrels filled with water with boards across make great dual function plant benches. Planting in the floor for the winter are covered also with a thin floating row cover.



Check this out http://www.madisonfarmtofork.com/mf2f-geothermal-greenhouse.html
Turan
Turan

Female Posts : 2603
Join date : 2012-03-29
Location : Gallatin Valley, Montana, Intermountain zone 4

Back to top Go down

Green House Floor Insulation? Empty Re: Green House Floor Insulation?

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum