Ask This Old House

Finishing A Backyard Pizza Oven; Working With Thre

General contractor Tom Silva travels to Philadelphia to help a homeowner put the finishing touch on a backyard pizza oven. Then Tom, along with host Kevin O'Connor, landscape contractor Roger Cook and plumbing and heating expert Richard Trethewey, asks, "What Is It?" Afterward, Richard shows Kevin how to apply teflon tape, pipe dope and wicking to threaded pipe connections.