You should be able to find out who made your shingles. Call them and ask. A radiant barrier will probably raise the roof temperature. It is not clear what impact this will have on shingle life. You can try googling it.
Quote:
Originally Posted by mulligan
One question I have asked before and never got an answer: Does a radiant barrier on the underside of the rafters have any effect on the life and/or warranty of the asphalt shingles.
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