I turned on an electric heater inside while still in the garage before departing to warm the core of the trailer, and after 90 minutes of driving in below freezing temperatures, the trailer was still quite warm inside when we arrived! Walls are made if 1/2" beveled cedar siding, tyvek house wrap, 1 1/2" EPS foam core insulation, then either 1/4" or 1/4" interior ply glued and stabled to the 2x2 and 2x3 frame.
After we deployed the pop-top to make dinner in the indoor kitchen, we did lose some of the heat as instill need to install a neoprene sleeve around the opening on the rear hatch, this will be the next step before we venture out on an overnight. I also need to install a carbon monoxide sensor for the propane stove and possibly consider a small propane heater as the electric heater I have tends to trip the alarm on the inverter when it starts up, but that is a topic for another post. I also am considering an induction cooktop so that we can be truly "net zero" on energy use and also create a healthier indoor environment by not burning propane indoors. This would require a larger battery, inverter, and additional solar panels.
After dinner and a very cold beer we got to take in an extraordinary moonrise and sunset, then headed home as the temps dropped back into the teens, brrrr.
Overall, I was quite happy with the winter performance of the insulation and very pleased with how easy the trailer was to pull in the snow. The VW Tiguan did amazing, didn't slide or lose traction at any point, even on then icy inclines. Can't wait to head back to the snow!
