Building an unvented roof in CZ5 on a retrofit. Stripped off shingles but forgot about the nail holes through the sheathing (rookie mistake). I didn’t have anything to seal the… Building an unvented roof in CZ5 on a retrofit. Stripped off shingles but forgot about the nail holes through the sheathing (rookie mistake). I didn’t have anything to seal the…Read MoreGreenBuildingAdvisor

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