Thermal Mass 4/2/4 – anyone use it?
I’m doing a new construction spec high efficient house.
I’m concerned about the overall durability with using the Styrofoam on the exterior wall of the foundation that protrudes the 1′ above grade. I still like the idea of having concrete in that area.
I’m looking at this thermal mass system with there 4″ of concrete sandwiched with 2 ” of Styrofoam and then 4″ of concrete with a overall effect of R-value of 19.27
This seems to me like a great solution. Has anyone used this system?