GH with RMH for AP & BSF. Slip Straw & Earthen Floor. Cold climate (8 hardiness)

Hello everyone,

I'm doing a project for a greenhouse in which I'll set up an aquaponic system and Black Soldier Fly production.

I'm in a hardiness 8 zone so I'll need to do something to keep the temperatures stable year-round. The idea is to make a rocket mass heater to heat it up when needed.

The south facing wall will be double glass and the remaining will be build with two layers of wood with slip-straw in the middle for insulation.

There is already a topic about this project but I decided that this part of the forum is more adequate for the debating everything. If you want, you can check our previous conversations, and conclusions, here https://permies.com/t/21366/cob/Increased-insulation-Cob

I have almost everything figured out but I'm unsure about the floor. The frost depth here is something like 1 meter and the yearly average temperature is 9 ºC so I don't want my floor to have connection to the soil because I would be loosing heat to it. Being so, I have to make some sort of isolation. On top of the isolation layer, I wanted to make another layer with cob and use it as additional thermal mass but I'm having concerns with humidity going in the cob...

I also wanted to make some kind of blankets to cover the wall with glass during the night but I'm not sure what's the best materials and/or method to do it.

I'll upload a google sketchup of the greenhouse. It's very basic as I'm just starting to use it but it's enough to give you an overall idea.


Green regards!

Here is the new version of the greenhouse (the one on the left)