Combined with hot temperatures, extreme moisture, bodily fluids, and bacteria, how does a typical sauna not completely rot or develop mould? Seems like the wood would be turned into mush with all of these factors.
Humidity is not even that high. Its up to 100 Celsius in there, no amount of water will create significant relative humidity to hurt wood. Bacteria and mold are killed at that temperature, so they can not damage the wood either.
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