Radiant Barrier Vs Metal Roof

Insulation radiant barrier roof.

Radiant barrier vs metal roof.

Radiant barriers are utilized to reduce summer heat gain in attics and help to improve the efficiency of green building envelopes. However it is also used in wall systems. What radiant barrier works best on a metal roof. Will a radiant barrier work under the shingles.

Hear tom s email answers. A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic. 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. Whichever your situation may be a conditioned or non conditioned metal structure the bottom line is this.

A radiant barrier will help reduce heat transfer from your metal roof to your attic. The heat that would normally be absorbed by the insulation is now being bounced back to the roof deck and causing the roof to emit more heat upward rather than both upward and downward. Oriented strand board osb with a thin layer of low emitting aluminum foil attached to one side is a common type of thermal radiant barrier sheathing. In these attic space applications there is an air space below the radiant barrier.

Adding a radiant barrier is the biggest improvement you can make for the smallest initial investment. We take a look at how radiant barriers work the different types of radiant barriers and some of the. A radiant barrier works best when it is perpendicular to the radiant energy striking it. A single layer installed closest to the outside.

A radiant barrier can lower heat transfer from attics to the building below keep the attic space cooler and lower cooling costs by up to 17 in warmer climates. Installing a radiant barrier underneath the roof will cause the roof temperature to increase by a few degrees usually 2 10º. That calculation depends on the incremental cost of the radiant barrier installation the thermal characteristics of your building envelope your local energy costs the annual run time of your air conditioner none of which we know. Foil backed osb is applied mostly in attics.

Furring strips horizontally across studs sheetrock drywall.