Garage with in-floor heat
I live in a northern climate where freezing temps and snow is a common occurrence during the winter months. I am planning to build a new garage using hot water in floor heat. I was told by the plumbing contractor that in floor heat is not advisable unless a ventilation system is installed as well. Along with floor drains. The reason for the ventilation system is to guard against mold growing in the insulated walls caused by the evaporation of water from snow melting off the vehicles. Apparently the water is partially absorbed into the concrete and this heated moisture is transferred to the wall spaces where mold can accumulate. Only constant ventilation will remove this excess moisture. Obviously venting out heated air somewhat defeats the purpose of heating a garage when it’s 30 below and certainly not very energy efficient. The contractors claim seems logical but I have not been able to find any research on this subject and wonder if he is just trying to sell me a ventilation system on top of the in floor heat. Wondering if anyone has run into this problem or if there is any valid studies done that I could review.
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