John Siegenthaler says, if there's ever been a time to get serious about slab insulation, it's now!

A wide variety of opinions on what constitutes proper underslab insulation continue to exist in the North American radiant panel industry. Where do you fall within this spectrum? Do you consider underslab insulation an inseparable component of any successful slab-on-grade radiant floor installation, or a waste of time and money?

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