Radiant Barrier Foil Insulation under Sub-Floor
Installing rFoil™ Radiant Barrier Foil Insulation underneath sub-floors is an excellent way to stop radiant heat loss to basements, increase comfort, and lower utility costs. rFoil™ is safe, simple, and easy to install especially in under sub-floor applications because this is one of the few times there are no obstructions. rFoil™ is unaffected by moisture and humidity and creates an excellent vapor barrier. rFoil™ insulation provides a radiant barrier to stop heat loss and adds R-Value to existing insulation.
Installation Method
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Unroll rFoil™ horizontally along the floor.
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Staple to corner joists and then again on the side of the joist as in the illustration. Make sure to insulation recesses at least 1/2" into the floor joist cavity.
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Continue to staple along the floor ensuring that rFoil insulation is recessed into wall cavity 1/2" to 3/4".
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Seal all joints with reflective foil insulation tape.
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Install floor deck as usual.
