Hi Crasmussen. I'm not sure if blue foam (or any other foam) on the walls, would be a good idea - and/or even more importantly - work. Maybe! Personally I use the blue foam for insulating *me* from the cold yurt. When need be. When not, it lives under the couch. Maybe if you didn't have high humidity. Or took the foam pieces out and gave them a good hot sunshine "bath" every few months to kill the mold - but what a pain/job that would be.
However. It may work for your situation. I really believe every yurt set-up is unique. We can learn from each other, but mostly you have to see what works best for you. (Hence the critical-for-happiness yurtitude of ...experimenting ... and making do... and understanding we are all just tiny, unimportant specks here for a short time so (as a bumper sticker I saw yesterday said). "Plant Seeds and Sing Songs". And model for your kids, the kind of person who adjusts to nature, not attempts the (often destructive) vise versa. Hopefully your kids will learn to problem solve, that although they may be specks*, they are not snowflakes, and be better for it. (IMHO). (But you are a sweet parent for caring so much about your kids. They are lucky.
*actually, that we are just specks is not something one should learn from a parent, I guess. Lol
Yurt living (at least from what I've seen, read, and experienced) is never the "set it and forget it" living Westerners think is normal and entitled to.
Agree 200% dry wood is critical. Glad you figured it out so quickly. You can stick in a green piece to slow down a burn, which is also sometimes helpful.
Other best tip: Circle the yurt on a windy day, find the drafts, and plug them. Do that a few times, your yurt may be shifting a bit in the wind. The windows and doors are problem areas for me. I plan on adding a strip of foam this summer - between the bottom canvas layer and wooden base - like others have suggested.
Tip 2: HOT WATER BOTTLES! ($5 @ Walmart). Few off grid things are nicer than a pre-warmed bed.
Tip #3: Thrift stores for extra, gently used slippers, down jackets, warm blankets, etc.
I'd also be nervous about adding a stone wall (by the already heavy stove) without a REALLY good, secure foundation under that part of the yurt. Of course then the yurt would be even more tied to the ground, which could be a good thing. Or a bad thing - should that foundation shift in winter. (Yikes. Guys? Thoughts?)
See - this is exactly the thing. We move towards Western solutions and away from what makes a yurt, a yurt. Often doesn't work and just creates other problems.
Very appreciative to Jaffo for giving us this platform for sharing thoughts.