Roof Radiant Barrier Specs

How do radiant barriers work.

Roof radiant barrier specs.

The problem with putting any r value on a roof is that the roof is normally not really part of the thermal envelope. High temperature tolerance superior flexibility and ease of use allow for applications in many varied industries to reflect light and heat. This helps improve energy efficiency of the home. The roof just keeps it dry.

How radiantguard radiant barriers benefit you. To meet astm c1321 standards irccs must have an emittance rating less than 0 25. 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. Since radiant heat is in a waveform it can be reflected.

A radiant barrier must have an emissivity of 0 1 or less to be effective. But there are actually many cons to radiant barriers that are not discussed. 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. 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.

Radiantguard radiant barriers reflect block radiant heat. The thermal envelope is usually your walls and ceiling. A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic. Radiantguard radiant barriers have an emittance of only 3 5 and a reflectance of 95 97.

A cooler attic space means less heat moving to the cooler space below the attic. Not just absorb or slow it down like other forms of insulation. Installed in over 1 5 million homes in the united states lp techshield panels also lower attic temperatures up to 30 f. So you want r value on your attic floor and radiant barrier at the roof.

Radiant barriers are a reflective foil insulation that reduces heat transfer into attics. Considerable better than the doe s radiant barrier minimum classification requirements. When placed directly against another material these barriers actually promote heat transfer by conduction instead of blocking or reflecting it away. To perform properly radiant barriers must be installed facing an open air space.

Also the greater the temperature difference between the sides of the radiant barrier material the greater the benefits a radiant barrier can offer. The industry standard in heat reflecting coating technology. 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. Lo mit s low emissivity and high reflectivity provide paintable radiant barrier technology to a wide range of substrates and geometries.