Since Dual Plane Attics worked so well in residential attics, what would
happen if you expanded that concept to industrial walls and roofs?
The answer was amazing. A shop
that once got over 110 degrees now stays below 88 degrees. 88
degrees may be hot for people outside of Phoenix, but it not bad in a
shop that doesn't uses air conditioning.
The following video show an outside
wall temp of 162 degrees and an inside wall temp under 92 degrees.
That's 70 degrees of temperature being blocked.
That's why this is working. This
shop has almost R-100 insulation and the slab temperature is controlling
inside temperature.