Ask This Old House S09 E02 Balusters an a Staircase; Laying a Stone Footpath

General contractor Tom Silva helps a homeowner install balusters on his new staircase. Then Tom, along with host Kevin O'Connor, plumbing and heating expert Richard Trethewey, and landscaping contractor Roger Cook ask, "What is it?" Then, Roger helps a homeowner install a new stone footpath.