Understanding energy consumption and moisture movement in the homes we build is hard enough; rampant half-truths and misconceptions only make it harder.
You can't gauge the truth of an opinion by the frequency of its repetition. Exhibit A: Builders' opinions concerning energy, insulation, heating, and cooling. A fair percentage of these beliefs — derived in part from product marketing, obsolete recommendations from "experts," and oft-repeated tales heard at lumberyards — prove upon examination to be half-truths or outright misconceptions. But like Whac-a-Mole pests, they just keep popping up.