What is foil faced insulation?

Foil Faced Insulation. Foil faced insulation is the best type of insulation for retaining heat in the winter and keeping heat out in the summer. This insulation product is designed to slow heat transfer and enhance acoustical performance. It also works as a barrier for methane, radon, vapor, termites and other vermin.Click to see full answer. Keeping this in consideration, how does foil faced insulation work?Foil Faced Insulation. Heat is transferred through three methods: conduction, convection, and radiation. These materials work by slowing the speed at which heat is conducted to a cooler surface. RadiantGUARD® foil faced insulation is completely different.Likewise, does foil insulation really work? This works well for most insulation materials, because conduction is the main way they prevent the movement of heat. Foil insulation works slightly differently, however. It means that foil insulation is going to have a higher U-value, but may well perform better than expected in the real world. Then, what is the difference between Kraft faced and foil faced insulation? What is the difference between unfaced and Kraft-faced insulation and how is it installed? Unfaced means the insulation lacks a vapor retarder (paper or plastic facing). Kraft-faced insulation includes a paper vapor retarder, which helps prevent mold and mildew.Is foil faced insulation a vapor barrier? Vapor Barrier Fiberglass Insulation Batts Both paper (called kraft paper) and foil faces offer vapor barrier properties. Paper and foil-faced insulation, plus gypsum board and certain latex paints, work well together as a team to stop moisture migration. That’s when foil-faced batts really shine.