Location: Southern alps, on the French side of the french /italian border 5000ft high Southern alpine climate.
posted 6 years ago
If you are talking about the burn tunel, not long enough, for sure. May be a foot or two at max. If you're talking about the flue, Some went up to 40 horizontal feet with an eight system. Remember tho, to insulate your cob floor from the surounding ground, as it will act as a heatsink otherwise. Sides and bottom insulation, as well, chich can wistand the weight. Over here, for concrete slabs, we use styrofoam.