S46E19: Westford: Heavy Metal

Kevin O'Connor finds Richard Trethewey in the attic. Richard explains the use of the mini duct system to save the homeowners space in the attic. Later, Tom Silva visits Fire Chief Terrence Baudin who explains why fires travel so fast in a balloon framed house. Meanwhile back at the house, Roofing contractor Tommy Santos and Kevin install a shingle style metal roof.