REMOTE wall — single vs. double EPS layer
I am in the planning phase of a REMOTE wall house with construction beginning in June 2016. I have been talking with a foam supplier who is pushing me toward a single ~5″ layer of foam instead of the two layers of 2 inch I had been planning. There are a number of advantages to the single thick layer approach – reduced labor and a significant financial savings are two of the most appealing benefits. However, I am concerned that having seams in the foam that run straight through to the housewrap will cost me efficiency vs having a double layer of thinner foam with staggered seams. Is this concern valid, and if yes, can I negate this concern with a quality installation job with the thicker foam – careful filling of gaps with mildly expanding foam and a good tape job?