Post
by TXGOAT2 » Thu Nov 18, 2021 10:04 am
Moisture is destructive. In this area, relative humidity can go from 10% to 100% overnight. In an uninsulated, unheated building in fall, winter, and early spring, items like tools and cars and electric motors will get cold during a cool, dry period, and when the next warm, moist front comes in, they will become soaking wet, inside and out. Uninsulated sheet metal roofs will get wet on the underside and drip water, metal framing will drip water, and cold concrete floors will become wet. I have not had this issue with a fairly tight, insulated metal building. If an object, especially a metal object, is at a temperature below the current dew point, it will get wet from condensation. Most heaters do not dry out air, and many actually add moisture. Any unvented, open flame combustion heater will add moisture to the air. My barn is too tight to use any open flame heater in it. The humidity becomes so high that it's like walking into a sauna. I solved the problem by going to a gas heat HVAC unit that does not emit any combustion products into the building. That also offers some limited protection from fire or explosion if combustible fumes are present in the building. Ideally, a car with wooden structural parts would be assembled with kiln-dried dry parts in a very dry environment. That way, in most cases, ambient moisture is such that it tends to tighten joints. But if you build your car in Houston and drive it to Yuma, it will loosen up. When you get back to Houston, it will tighten up again.That's one drawback to wood construction. In my opinion, loose beats rotten, and a few squeaks in dry weather beats rust, mold, and wood rot.