I'm in Alaska hoping to successfully create an earthbag floor/foundation for a couple room additions to our yurt (to build on using cordwood construction). What materials would be best to keep the floor as cozy as possible?
Should I lay several inches of foam board down somewhere in the stack? build an insulated
wood floor on top of the uppermost earthbag? Incorporate some type of insulation into the earth bag?
Some concerns are: insulation degradation over time, humidity and moisture control in winter/ventilation, warmth, compatibility in being build next to a yurt whose platform is on pier blocks. I'm building on ground level on top of gravel, so frost heaving isn't really a major concern I don't think. What are your thoughts? Thank you in advance!