The weather warmed up here in Tennessee, and that could only mean one thing: time to get working faster on insulating our trailer! With aluminum being such an excellent conductor of heat, it very quickly turns oven-like inside our tin can as soon as the sun makes an appearance.
We decided to go with Prodex reflective insulation from Insulation4Less after reading some good things about its performance in a shallower wall cavity like those in our Airstream.
To create an air space between the outer aluminum skin and the outward-facing reflective layer of insulation, we first cut and glued hundreds of tiny foam insulation blocks to the inside of the skin. It made for a very neat modern art look by the end, but also took a very long time!
Next we cut the pieces of insulation to size (with the assistance of our four-legged helpers, as you can see in the photos) and taped all the edges to the trailer with foil tape except the bottom (to allow water to flow downward if any leaks arise).
After a few days of this and getting all our first pieces of insulation up, the temperature is much more temperate inside the trailer. You can feel a huge difference between areas that are insulated and those that are not! The bare aluminum can be scorching hot to the touch, but the heat doesn’t seem to transfer inside nearly as much it did before.
Hopefully a good insulation job will mean a lot less time running our heater and air conditioner and more time enjoying the fresh air wherever we may be parked. Good for us, good for the environment!