Radiant Barrier Roof Decking
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Radiant barrier sheathing emits 3 5 of the heat it absorbs and can reducesummer heat gain in the roof from 16 to 42.
Radiantguard radiant barrier foil insulation installed in an attics can reduce attic temperatures by up to 30 degrees when stapled with a staple gun to the underside of roof rafters by reflecting up to 97 of the radiant heat that strikes its surface thereby reducing heat.
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Radiant barrier roof decking. A radiant barrier can be effective with an asphalt shingle roof only when installed inside the attic either to the underside of the roof decking or to the underside of the roof rafters. In these attic space applications there is an air space below the radiant barrier. The most effective radiant barrier sheathing is a structural roof sheathing panel which consists of an osb panel with heat reflecting foil laminated to one side. It reduces attic temperatures by up to 30 degrees fahrenheit and it blocks up to 97 of radiant heat.
The osb techshield radiant barrier osb is engineered to improve energy efficiency. Radiant barrier applied either under the roof rafters or under the roof sheathing is probably the most common application of a radiant barrier but many homeowners shy away from it because they dont fully understand what radiant barrier is or how it works. This reflection insulation also has high mechanical properties making it perfect for load bearing applications in construction. Other kinds of radiant barriers combine reflective materials usually aluminium foil with materials like plastic films cardboard and kraft paper.
There is a misconception that if the heat is coming in through the roof shingles and. Specifications in selecting your radiant barrier sheathing make sure that the label indicated that the productemittance is less than 01 as measured by astm 1371. Radiant barrier installation attic radiant barrier installation most of the heat entering a home comes through the roof. Some of thefacts they list are.
Another method of applying radiant barrier to the roof in new construction is to use a radiant barrier that is pre laminated to osb panels or roof sheathing. For a shingled roof there isnt really a way to add a radiant barrier unless you were re decking or building a new roof on top of the old one the new roof being metal or tile with the required air space minimum the foil needs.