Synopsis

Plumbing and heating specialist Richard Trethewey assists a homeowner in refreshing her bathroom with the installation of a new vanity cabinet, countertop, and sink. Subsequently, joined by general contractor Tom Silva, landscaper Roger Cook, and host Kevin O'Connor, Trethewey poses the question, "What is it?" Following this, Tom and Kevin delve into the specifics of various wall insulation materials and their respective installation methods.