Hello,
I built a tiny home (16'x12') on pier blocks, raising it about 12 inches off the ground. It's framed with studs, joists, pressure-treated cross boards, and plywood. I painted and caulked the exterior, and it has a window AC unit and two windows, but no plumbing inside. While it's been a good house, I face a problem with condensation on the walls and floor during winter. We use an electric oil heater, and I suspect it's a ventilation issue. The floor consists of two sheets of OSB (3/4"), a vapor barrier, and snap flooring. I've confirmed there are no leaks from the roof or walls.
I'm looking for solutions beyond a dehumidifier for winter. I'm considering capping the exterior gap since it's on pier blocks, which might help retain heat, but I worry about air stagnation underneath. I can't keep anything on the floor without it developing moisture. Any suggestions?
Quote from: shelbyriffe on April 09, 2025, 11:20:31 PMWe use an electric oil heater
....something like one of these (https://www.amazon.com/DeLonghi-Comfort-Thermostat-Settings-Features/dp/B000TGDGLU/ref=asc_df_B000TGDGLU?mcid=7c5698c3cfa4311da2bf911ace6a88ff&hvocijid=445077649716980266-B000TGDGLU-&hvexpln=73&tag=hyprod-20&linkCode=df0&hvadid=721245378154&hvpos=&hvnetw=g&hvrand=445077649716980266&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9030464&hvtargid=pla-2281435179778&th=1)?
Is the floor insulated underneath? The walls? The ceiling or roof?
What are the sources of air borne moisture? Showers? Cooking? and so on.
If I were your friend and had to give you just one solid piece of advice - insulate the underside of your floor.