R-Value of Metal Roofs
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rk_a
| Posted in GBA Pro Help on
Is a metal roof still the best R and thermal emittance choice?
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Replies
A metal roof carries no R-Value. It's a 24-26 gauge piece of metal so it has no R-Value. One can get a "cool roof" color that helps reflect some of the suns heat gain but that does not provide any R-Value.