Building a Retaining Wall; Loud Faucet

Landscaping contractor Roger Cook helps a pair of homeowners build a retaining wall using pressure-treated timbers. Afterward, Roger, along with general contractor Tom Silva, plumbing and heating expert Richard Trethewey and host Kevin O'Connor ask, "What is it?" Then, Richard has an easy fix for a kitchen faucet that is making a loud, shuddering sound.