Reflective Bubble White Poly Insulation : One 4 ft x 125 ft (500 sq ft)
This insulation product consists of 1 layer of 5/32" (4mm) polyethylene bubble that is sandwiched between one metalized, low emissivity surface and one layer of white polyethylene. Because it has a white attractive finish it is used in many building applications. However our recommendation is its use in under concrete applications.
The purpose for installing Reflective Bubble White Poly in a concrete slab application is two-fold; first, it acts as a vapor retarder and second, it provides a thermal break.