Radiant Barrier On Top Of Roof Decking

As the original 1 brand of radiant barrier sheathing lp techshield panels vaporvents technology prevents moisture buildup during and after construction while blocking up to 97 of radiant heat in roof panels.

Radiant barrier on top of roof decking.

The hot roof material then radiates its gained heat energy onto the cooler attic surfaces including the air ducts and the attic floor. Suitable applications include sheathing in walls flooring and roof decking. Specifications in selecting your radiant barrier sheathing make sure that the label indicated that the productemittance is less than 0 1 as measured by astm 1371. A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic.

Delta t is the difference between the temperature of the top layer of insulation in the attic or wall system and the living spaces. Radiant barrier sheathing emits 3 5 of the heat it absorbs and can reducesummer heat gain in the roof from 16 to 42. Other kinds of radiant barriers combine reflective materials usually aluminium foil with materials like plastic films cardboard and kraft paper. 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.

Some of thefacts they list are. In these attic space applications there is an air space below the radiant barrier. Installed in over 2 million homes in the united states lp techshield panels also lower attic temperatures up to 30 f. For a shingled roof there isn t 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.

During the hot summer the heat of the sun can raise the temperature of the top shingles of the roof to nearly 180 degrees. It reduces attic temperatures by up to 30 degrees fahrenheit and it blocks up to 97 of radiant heat. However radiant barriers can also be installed in other ways such as having it infused with your roof decking or underneath tiles. Reduces up to 97 of radiant heat.

For a picture of this in action you can check out the product listing on amazon. 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. A radiant barrier works best when it is perpendicular to the radiant energy striking it. 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.

This reflection insulation also has high mechanical properties making it perfect for load bearing applications in construction.