Richard Trethewey and Tom Silva joined Jim Braude and Margery Eagan on Boston Public Radio for another edition of "Ask This Old House." Trethewey and Silva, of course, star on the PBS series. Trethewey is an HVAC specialist and a plumber, and Silva is a general contractor.

Trethewey and Silva talked about the big projects they've been tackling recently, including one for Staff Sergeant Matt DeWitt in Hopkinton, NH.

To hear the entire segment with Trethewey and Silva, click the audio link below. Head to their websitefor more information, and tune in next month for another edition of "Ask This Old House."