Turkey Creek
5 year old buck +
I am building another walk in cooler, probably 8' x 12'. Here is a question I am pondering. I am going to use foam board because it fits my design and needs the best. However, I am wondering would the R value be higher if I use 2 layers of foam board with the a closed air pocket between them or would the insulation R factor be higher with a solid wall of foam board? From my understanding air makes the best insulation as long as it is in a "sealed" void.