To perform properly radiant barriers must be installed facing an open air space.
Radiant barrier for attic review.
Impermeable radiant barriers and coatings can also restrict airflow.
After installing the radiant barrier our electric bills have been reduced by 50 even in the hottest months.
But radiant barrier maybe but it s kind of hard to tell because there s a lot of claims of energy efficiency but it s very difficult to prove it out.
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We installed the product and the attic temperature rarely exceeds 92 degrees.
Our average electric bill without the radiant barrier in april may and june was 140 00.
When placed directly against another material these barriers actually promote heat transfer by conduction instead of blocking or reflecting it away.
Also sometimes heat radiant barriers are used around the exterior building wall so as to allow the heated air to rise upwards naturally into the attic.