Ask This Old House (2002)

S6E12 Grading; Inside Walls; Bathtub Stopper

Landscape contractor Roger Cook shares various techniques with host Kevin O'Connor for assessing the grade, or slope, of a landscape. Later, in the loft, Roger and Kevin team up with general contractor Tom Silva and plumbing and heating expert Richard Trethewey to tackle the question, "What is it?" Tom and Richard then demonstrate different methods for investigating what’s hidden inside a wall. To wrap things up, Richard assists a homeowner in fixing a bathtub that’s leaking and failing to hold water.