Teardrops n Tiny Travel Trailers

What type of different insulation are you or have you folks been using for your teardrop building?

I see some using plain building insulation without backing of any kind thus the question arose. Made me wonder about the durability of it.

Also what is the best type of insulation to use? Is there anything better besides styrofoam?

Classic Finn

Foil faced polyisocyanurate ( probably butchered the spelling)
It's a yellow board with a foil facing on 1 side comes in 4x8 4x9 and 4x10 sheets I have seen it from 1/4" to 3" thick.
The foil acts as a vapor barrier and will reflect the heat back in or out depending on how it is oriented. Placing the foil in and the heat will be returned to the cabin or so they claim. It is tough and durable but has about the same characturistics as the closed cell foam board. Some contains fiberglass strands that can be an skin and eye irritant when cutting and machining so wear gloves and eye protection. A dust mask would be a plus also. There is a companion foil tape to seal any joints and could br taped to the wood support members to eliminate air infiltration.

I used hot water heater wrap and double back bubble foil insulation

i used foam sheets and cellulose blow in type..I didn't blow it in, I laid it on thick.

Polystyrene sheeting for me, I wanted it to be an exact fit so I got some cut to the correct thickness, 19mm in the walls and 42mm in the ceiling. It adds a lot of strength this way as well so I could cut down on number of spars for the roof and their size

Cheers
Steve

The Pink foam. and rolled insulation in some spots I couldn't get the pink stuff or needed to fill a small void.

I USED THE 3/4 BLUE FOAM.MINE WAS TO KEEP THE HEAT OUT.WHEN ITS COLD OUT IM HEADING TO THE HOUSE.