I got several calls and emails from last week’s post about installing radiant barrier under shingles. It seems that I’ve kinda stirred up a hornet’s nest of sorts. One roofer was grateful for “Saving” him from making a big mistake. Another guy was down-right mad. He said I didn’t know what I was talking about and that these products like Polaralum® reflected heat because they are white on one side. If you put white on TOP of the roof, then yes it would help. Under the shingles, conductive heat does not know what color something is.
Here is a video I made to illustrate how without an air space you can never have radiant heat.
Looking for more videos on this topic? Check out my posts below.
Tags: Polaralum, Polaralum Radiant Barrier, radiant barrier foil, Video
I like how you explain this in the video. I had a guy try to sell me this stuff last year when I was having a new roof put on after a hail storm. It didn’t make sense what he was sayin would work.
Great video and really helpful information