Radiant Barriers

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Radiant Barriers

Solar energy is absorbed by a roof, heating the roof sheathing and causing the underside of the sheathing and the roof framing to radiate heat downward toward the attic floor.

When a radiant barrier is placed directly underneath the roofing material facing an air gap, much of the heat radiated from the hot roof is reflected back toward the roof. The low emissivity of the underside of the radiant barrier means very little radiant heat is emitted downwards. This reduces the amount of heat that moves through the insulation into the space below.

Don’t have items touching the radiant barrier. Radiant barriers must face an open air space to perform properly as they transfer heat only across air spaces. If other materials touch it, heat will be transferred by conduction.

Radiant barriers work in the Dallas-Fort Worth area but open-cell foam insulation sprayed under the attic roof is generally a more effective heat control for this area. The foam seals the attic and conditions the attic space, allowing that space to be used for other purposes such as storage. Foam is particularly important when the air-conditioning ducts are in the attic as they are in most DFW homes..

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Do you need an energy consultant, energy auditor, green builder, or green remodeler in North Central Texas or the Dallas-Fort Worth area? Contact Terry JensenFrugal Energy, LLC 972 251-1532 or 817 443-2553

Note: The opinions expressedherein are exclusively those of the writers or other participants and do not necessarily reflect theposition of CyberParent,LLC. They are not intended to take the place of advice of ahealth, legal, or other professional whose expertise you might need to seek.This website explains green building and green remodeling for a climate zonecomparable to North Central Texas or Dallas-Fort Worth, Texas, It isimportant to hire a green builder and an energy consultant who are experts inenergy-efficient building in your climate zone and who use the most up-to-dategreen building information.

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