Choosing Hammers; Pressure-Assisted Toilet; Plastered Wall Ask This Old House : Season 4 Episode 16

Up in the loft, general contractor Tom Silva shows host Kevin O'Connor several different types of hammers and how to use them properly. Then, plumbing and heating expert Richard Trethewey helps a homeowner repair a pressure-assisted toilet. Tom then gives Kevin some lessons on how to patch a large hole in a wall using veneer plaster and blueboard.