Under, or pre-laminated to, roof sheathing: Place the radiant barrier under the roof sheathing, with the foil side facing down.Rafter/truss installation: Drape your radiant barrier over the trusses, making sure the foil faces downwards.Let’s take a look at the most common methods of installation. Radiant barrier insulation can be used throughout your home, including in your attic, rooms or crawl spaces. Not sure which type of insulation to use? Contact us! This allows air to get trapped inside, which increases the R-value.Īnother difference between the two is that reflective insulation prevents moisture and condensation - especially when used in metal and steel buildings. The foil surfaces cannot touch due to the structure of the bubbles and foam. Reflective insulation has a middle part made of foam, bubbles or fiberglass enveloped by two or more surfaces of foil. When installed to face an enclosed air space, the radiant barrier turns into a radiant barrier system or reflective insulation with a measurable R-value. Radiant barriers consist of a single thin surface of metalized film with a reinforced middle part, also known as woven scrim. Although they have the ability to reduce heat gain and loss, they have no inherent R-value because they cannot absorb heat and transfer it across air space. Radiant barriers are exactly what the name implies - barriers rather than typical insulation. What makes them different from one another?
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