How to Seal Leaky Ductwork | Ask This Old House
Richard Trethewey shows an innovative new way to seal ducts from the inside. (See below for steps.) SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse Richard uses a new technology to seal ducts from the inside. Steps for How to Seal Leaky Ductwork: 1. Remove the grilles from all of the supply and return registers. 2. Plug…





