In this post, I’m going to explain in brief how to install trailer insulation in a Tiny House trailer. This process is a bit tedious, but it’s also totally worth it in the end! The floor is always the coldest part of a Tiny House. Heat rises, and because our foundation is actually a few feet from the ground, you also have to consider the wind that is constantly sweeping under your home. Insulation helps with that, but if we’re parked for a long period of time, we’ll also install a Tiny House skirt.
How to Install Trailer Insulation
Now… there were questions about the orientation of those insulation boards. Shiny up or shiny down? After a little bit of research, it sounded that the shiny side should be facing up to keep warmth inside (we will head north during winter after all). Let us know if you think differently!
After placing the insulation boards, I used great stuff expanding foam to fill the gaps. It’s important to create an insulating barrier. Otherwise, our feet will freeze!
One thing that I learned is that one can of expanding foam doesn’t get you very far! I was on my way back to Home Depot after the first couple insulation boards to buy a whole bunch more. After a while, I got the hang of it.
Bonus video: cutting a few trailer insulation boards, just because!
Cutting foam boards can be done in a few different ways. We tried doing this with the table saw, but it made too much of a few. I felt like I was inhaling pieces of insulation! Our preferred method was to use a sharp knife and straight edge. Sometimes we even sharpened a metal spatula to cut the boards more accurately.