Radiant Barrier Roof Shingles

One common misconception regarding radiant barrier is that the heat reflecting off the radiant barrier back to the roof has the potential to increase the roof temperature and possibly damage the shingles.

Radiant barrier roof shingles.

This can be a little tricky to understand because it seems logical that the roof would get hotter if the radiant barrier below it is reflecting 97 of the radiant heat back through the roof assembly. If there is no insulation between the sheetrock and the roof deck between the rafters then you should definitely add insulation before putting a new roof on. Because radiant barriers reflect the radiant heat rays that strike them back in the opposite direction from which they came modest concerns have been raised about the possible increase in roofing temperatures and the effect of increased temperatures on roof shingles. A radiant barrier continues to be an excellent solution to block that heat before it enters your living space but many diy homeowners and even some professional installers question whether the radiant barrier reflecting the heat back up can actually make.

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. Nevertheless a radiant barrier may still help to improve comfort and to reduce the peak air conditioning load. In these attic space applications there is an air space below the radiant barrier. Radiant barriers don t harm roofing materials or void shingle warranties.

However we will do our best to explain why the effect is nominal. As for the metal roof i would install atticfoil radiant barrier below the metal roof.