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There are two common methods in which radiant barrier is installed in roofing applications in new construction. | |
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Draped Over Roof Trusses - Material is draped over the truss before roof decking is installed. Allowing the material to sag about two inches will provide an air space on both sides of the foil resulting in a slightly better performance. |
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Attached to Roof Decking - Roof decking is available with aluminum glued to the bottom side. The decking is installed with the foil side facing the attic space. As an alternive, radiant barrier material can be stapled to regular 4x8 sheets of OSB or plywood. |
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House wraps
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Radiant barrier is becoming a popular alternative to ordinary house wraps. Perforated radiant barrier can be installed in place of a typical house wrap and provide the same basic functions as well as reflecting heat. The only requirement is that there is an airspace on at least one side. This is typically the case anyway with brick veneers, vinyl siding, or lapped wood siding. |
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Material Selection
Radiant Barrier foil - Make sure the product you purchase is double sided (aluminum foil on both sides). It is generally available as perforated and non-perforated and comes in different strength/grades. The type you need depends on your geographic location and particular application.
DIYRadiantbarrier.com is proud to now offer an ultra high strength, double sided, perforated radiant barrier material for sale. This material is available in 500sf rolls (48" x 125ft). Buy as many as you need at the low low price of $61.49 plus shipping.
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