Condron Dry ridge installation guide Loading advertisement... Up next CladMaster – James Butler Talks Glass Reinforced Concrete (GRC) Cancel Turn Off Light Watch Later Share Auto Next Theater Condron Dry ridge installation guide June 2, 2021 June 2, 2021361 Pitched Roofing Consultant John Mercer explains how to fit a dry ridge system to ventilate either the roof space or batten cavity.