Radiant Barrier In Concrete

Ask The Expert – Q & ACategory: Radiant BarrierRadiant Barrier In Concrete
RIMA Expert Staff asked 12 months ago

Can you tell me anything regarding the radiant barrier use under concrete? Some of your members manufacture under concrete insulation in varying forms – some with a radiant barrier some without. Some say you can’t install a radiant barrier under concrete – some say you can. Aside from installing it correctly so the aluminum is not destroyed by the concrete — does a radiant layer still work under concrete?

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Best Answer
RIMA Expert Staff answered 12 months ago

The answer is no — a radiant barrier installed under a concrete slab will not be able to function as a radiant barrier. Radiant barriers need air space in order to reflect heat and there would not be an air space under the slab.