Insulation Boards and Tiles
Insulation boards and tiles are flat (.5 inch to four inch thickness) boards that are made of lightweight, insulating material such as mineral wool insulation, polyisocyanurate insulation (AKA polyiso insulation), or calcium silicate insulation. They fit within ductwork to insulate the duct in order to provide more even, more consistent temperature control, to preserve energy, and to reduce noise. Sized to fit most ducts, most of these boards and tiles can be easily cut with a utility knife to required sizes if need be. Products differ by R value rating, dimensions, material, standards and other considerations.