YurtDwellingMama, our yurt is too new for mold problems yet, but cleanliness has to be part of the mold problems of the other yurts I know here. The yurts that have mold problems also are not the cleanest yurts. No one here has running water, but it rains a lot and coming up with a rainless day to wash a yurt during the winter when mold starts growing is difficult. I personally think that protecting the yurt from the rain by the foundation is something important. I would also love gutters for our yurt, but haven't seen enough to be able to figure out how to make them. I know Colorado yurts can have gutters, but there photos don't show enought for me to determine what they are made from. Do you know how the yurt gutters are made?
I don't think a stove vent would be a good solution for year-round cooking and humidity within a yurt. A stove vent would need sufficient electricity and if you're off-grid, that may be hard to come up with. Do you have music or run the stove vent? Or turn use candlelight? And then there is cutting a second ventilation hole into the yurt and possible leaks from that hole. For the yurts here, the stove pipe is the place most of the yurts leak.
If I recall correctly, your yurt is a Pacific Yurt. That may another part of the difference in cooking not being a problem. That would mean your roof cover is vinyl and you've got poly covering the walls, with a modern reflective insulation. All of the yurts here have 100% wool insulation. I know of eight Mongolian yurts, one Kyrghystan yurt, and our home-made yurt. We wanted ours to be all natural, so we used wool for insulating it. Our outer cover is 100% cotton and I don't know what the others have. Their covers could be a cotton/poly blend or could be cotton. 100% cotton canvas is hard to find here. We had to order ours from another country and I don't know that anyone else did that. Most people went to sailmakers for their outer covers, and they use cotton/poly blends. I don't think you can actually have mold growing within your insulation like we can get with the wool. I think your walls will be your only worry besides surfaces. Modern yurts definitely have their advantages in that. Our "kitchen" porch cover is vinyl and humidity is the big reason for that. As long as I look at it every week or so, I can easily wipe off anything that is starting to grow on top of it. We aren't sleeping in it, so we decided it was okay there. Pacific yurts are VERY nice, they just are really expensive, plus we'd have an import tax on them, and they are not really what we wanted. But we didn't want a Mongolian yurt either because we wanted height and Mongolian yurts have all sorts of implications of using their minimal wood resources for an export product and Mongolian yurts have become a pretty big export product. Then there is the fact that you still have the import tax when it comes here. We didn't have the import tax on our cotton canvas because the country we ordered it from is a "free-trade" country. The raw cotton was probably taxed, but we decided to just ignore that fact.
And now I'm getting way beyond mold. Do you know anything about the Colorado Yurt Company gutter system?
: madrone - : SAHM to 12 y.o. DS, : 9 y.o. DD, and : 4 y.o. DS