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- Does the foil surface on panels of rigid insulation serve as reflective insulation?
Does the shiny foil surface found on some panels rigid insulation serve as reflective insulation? If so, does the extensive printing often found on the foil degrade its value as reflective insulation or does it have no significant effect?
(I think the main purpose of the foil is to be a vapor barrier.)
(I think the main purpose of the foil is to be a vapor barrier.)