Ask This Old House - Season 7 Episode 10
Whole-House Water Filter; Repairing a Roof

Plumbing & heating expert Richard Trethewey heads to Indianapolis to help a pair of homeowners install a whole-house water filter. Then Richard, along with general contractor Tom Silva, landscaping contractor Roger Cook, and host Kevin OConnor ask, "What is it?" Then Tom helps a homeowner repair a hole in a rubber roof and Richard shares a viewer tip for cutting PVC pipe without a saw.