What is a “moisture sandwich”? In a new e-book from The Construction Specifier, Ted Winslow of CertainTeed Insulation explains how tight-envelope construction techniques have led to a steep reduction in air movement through walls. This means moisture gets trapped inside wall cavities without sufficient means for it to escape, leading to reduced drying potential for a wall’s interior. This “moisture sandwich” is occurring with increasing frequency as architects incorporate … Continue reading Use of vapor retarders to reduce moisture covered in new e-book