Building a raised garden bed, several types of landscape timbers and clearing a slow-draining bathtub using a plumbing snake.

Landscape contractor Roger Cook helps a young couple build a raised garden bed using composite landscape timbers made from recycled plastic and sawdust. In the ASK THIS OLD HOUSE loft, Roger shows host Kevin O'Connor several other types of landscape timbers, including one that has been pressure-treated with liquid glass. Then, plumbing and heating expert Richard Trethewey lends a hand to a homeowner by clearing a slow-draining bathtub using a plumbing snake.