Roof Radiant Barrier Specs

Radiantguard radiant barriers have an emittance of only 3 5 and a reflectance of 95 97.

Roof radiant barrier specs.

A radiant barrier must have an emissivity of 0 1 or less to be effective. A radiant barrier works best when it is perpendicular to the radiant energy striking it. 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 transfer from the attic to living spaces resulting in lower utility bills. Since radiant heat is in a waveform it can be reflected.

The radiant barrier reflects 95 of the radiant heat back to the roofing materials which then emits over 90 of the heat out the roof almost instantly. This helps improve energy efficiency of the home. The thermal envelope is usually your walls and ceiling. Radiant barriers are a reflective foil insulation that reduces heat transfer into attics.

The industry standard in heat reflecting coating technology. So you want r value on your attic floor and radiant barrier at the roof. Considerable better than the doe s radiant barrier minimum classification requirements. How radiantguard radiant barriers benefit you.

High temperature tolerance superior flexibility and ease of use allow for applications in many varied industries to reflect light and heat. When utilizing osb radiant barrier sheathing you can reflect up to 97 of solar radiation which translates into an attic heat reduction of up to 30 f. To meet astm c1321 standards irccs must have an emittance rating less than 0 25. But there are actually many cons to radiant barriers that are not discussed.

How do radiant barriers work. To perform properly radiant barriers must be installed facing an open air space. A cooler attic space means less heat moving to the cooler space below the attic. The roof just keeps it dry.

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. Lo mit s low emissivity and high reflectivity provide paintable radiant barrier technology to a wide range of substrates and geometries. The problem with putting any r value on a roof is that the roof is normally not really part of the thermal envelope. Also the greater the temperature difference between the sides of the radiant barrier material the greater the benefits a radiant barrier can offer.

Installed in over 1 5 million homes in the united states lp techshield panels also lower attic temperatures up to 30 f. So this begs the question are radiant barriers truly worth it. Benefits of radiant barrier sheathing. When placed directly against another material these barriers actually promote heat transfer by conduction instead of blocking or reflecting it away.