Ask This Old House

Plumbing and heating expert Richard Trethewey heads to Tampa, Florida to help two homeowners repair their broken water softener. Then Richard, along with host Kevin O'Connor, landscaping contractor Roger Cook, and general contractor Tom Silva ask, "What is it?" Next, Roger helps a homeowner repair and prevent deer damage to one of his evergreen trees. Then, up in the loft, Tom shares a viewer tip on how to reduce airborne dust while sanding.