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What type of insulation should I use underneath my Warmboard subfloor?

insulation subfloor type underneath Warmboard
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What type of insulation should I use underneath my Warmboard subfloor?

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All radiant systems require insulation under the subfloor and Warmboard is no exception. We recommend standard fiberglass batts insulation of minimum value R-19. One important distinction is that foil backed insulation is NOT required when using Warmboard.

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