Air sealing and insulating direct vent gas fireplace termination

Hello all,What has everyone done and/or used to air seal and insulate a direct vent gas fireplace?At this stage of the design I can terminate on the roof or wall,… Hello all,What has everyone done and/or used to air seal and insulate a direct vent gas fireplace?At this stage of the design I can terminate on the roof or wall,…Read MoreGreenBuildingAdvisor