Originally posted by DuramaxDude
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The sheets with the foil backing are radiant board. Just a heat barrier attached to the OSB for roof decking.
The other is a foam spacer that has vent channels in it to space the insulation off the roof decking to allow air flow from the soffit to the ridge vent. I left a 1” gap between the roof decking and ridge beam. Rolled 2” ridge vent foam stripping on top of the r-panel on each side then put the ridge cap on top of it. Keeps bugs and critters out but still allows air flow.
I’ll cut 2”x10” holes on the eaves add soffit vents to the front and back overhang for air intake.
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