Ask This Old House features some familiar faces, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook—and we make house calls!
Roger visits Santa Fe to learn about "waffle gardening". Richard adds motorized zone dampers to a forced-air HVAC system. The guys ask "What Is It?" and Tom shows an easy way to bisect angles.
S12E13 23 min