[DelaWhere]

>>>I like mine attached to the house, and you will get heat from it, if you open a window or door.<<<

Excellent advice...

They make a polycarbonate sheet that is two layers with spacers that create air pockets. Considerably reduces heat loss and is much stronger.

If you make a freestanding gothic arch greenhouse, it will shed snow quite well, and most building codes consider a pipe frame, polyethylene covered greenhouse to be a 'temporary structure' and permitting is usually not required nor is code applicable... But in those Demo-Can't controlled places, the Liberal 'Rats control everything...

Hey, maybe that is why I am a Republ-I-Can.

Seriously, I would put one on the South side of the house, shed, barn, hillside. On the house, Granny is absolutely correct - adds heat to the house in the sunny winter day. Open top AND bottom of a window, and the heat will come into the house through the top and cooler air will go into greenhouse via the bottom.

Something like this:

[CottonBall]

If you make a freestanding gothic arch greenhouse, it will shed snow quite well, and most building codes consider a pipe frame, polyethylene covered greenhouse to be a 'temporary structure' and permitting is usually not required nor is code applicable... But in those Demo-Can't controlled places, the Liberal 'Rats control everything...

Even here, we can get away with a temporary structure like that. I just heard of a guy that has a 3000 sq. ft 'woodshed', complete with furniture and doors! I hope he never gets inspected...

Thanks for the greenhouse info - I will hopefully be putting it to good use this summer. I may have to attach it to the back deck, though, because both sides of the house will be shedding massive amounts of snow throughout next winter - and crush the poor little thing!

[DelaWhere]

A cross section of a sheet of double wall polycarbonate would look like:

You can even go to the 'Cadillac' with Lexan which is almost indestructible. (thicker sheets of it are bullet-proof)

The trapped air serves as an insulation and increases the R factor considerably. (R is a measure of resistance to the transfer of heat - Like regular insulation may be an R-6 or R-24 and are used to determine heating/cooling loads.)

[TenthAmendmentChampion]

I’m showing that to my husband. Nice work.

[nw_arizona_granny]

That is a nice greenhouse and it needs to be about 3 of them, joined so they are one long one.