Synopsis

The fourth season opens with a visit from landscaping contractor Roger Cook, who assists a homeowner in restoring a loosened flagstone within the mortar of his front walkway. Subsequently, Cook joins general contractor Tom Silva, plumbing and heating specialist Richard Trethewey, and host Kevin O'Connor as they ponder, "What is it?" Following this, Tom guides a resourceful homeowner through repairing a hardwood floor where an interior wall had previously been.