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Old 3 Weeks Ago   #31
Cole_Robbie
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Originally Posted by Worth1 View Post
Thanks.
If a person used 4 inches worth of high density foam board it would be R20.
Every inch has an R factor of 5 with this stuff and it doesn't break down.
Another thing to do is put that silver stuff pointing towards the outside.
The stuff is around 40 dollars for a 4X8X2 sheet.

Worth

I have been thinking of ideas for insulating the greenhouse I have now, as well as building another one that is insulated. The most realistic idea I have is to make the north and end walls out of 1/4" OSB with 1/2" foil-faced foam panel inside that.

https://www.menards.com/main/buildin...7271463&ipos=2

The panel is R2.7. I think R3 would be a realistic guess for the osb/panel combo.

The question that requires more creativity is, what if I wanted something retractable? Like a curtain or tarp that would roll up and down over the clear south wall, or possibly even insulated shutters that open and close. I can think off all sorts of crazy ideas, but I don't know the best one to pick.
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Old 3 Weeks Ago   #32
Cole_Robbie
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This stuff is about the same price and has an r-value of 3.2 :
https://www.menards.com/main/buildin...481117&ipos=16
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Old 3 Weeks Ago   #33
Cole_Robbie
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https://www.amazon.com/Industrial-Gr...Y81YT25D3DXD7N

I like the insulated tarp idea. But I am wondering if I could make my own, to make a thicker version.
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Old 3 Weeks Ago   #34
Worth1
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Originally Posted by Cole_Robbie View Post
https://www.amazon.com/Industrial-Gr...Y81YT25D3DXD7N

I like the insulated tarp idea. But I am wondering if I could make my own, to make a thicker version.
I don't see why not.
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