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R-Value of Metal Roofs

rk_a | Posted in GBA Pro Help on

Is a metal roof still the best R and thermal emittance choice?

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  1. jackofalltrades777 | | #1

    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.

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