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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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Does the white side develop blue spots when left exposed to heat and cold as in a ceiling facing floor


This will not happen to the EPS itself as long as there isn't anything being exposed to the foam that would cause such a reactions.

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