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R- 7.8 , 2-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

Perma "R" Products R- 7.8 , 2-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

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Is Insulfoam combustible? Does Insulfoam require a protective or thermal barrier to separate it from interior living or conditioned spaces?


Correct. The IBC and IRC require all combustible insulations be covered with a 15 minute thermal barrier for interior use. Typically 1/2" gypsum board / sheet rock.

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