Plot: General contractor Tom Silva helps a homeowner prepare his concrete basement walls for finished wallboard. Then, up in the loft, plumbing and heating expert Richard Trethewey shows host Kevin O'Connor how to tie a few basic knots
![Cast and Crew in Ask This Old House - Season 7 - Episode 23 - Basement Wallboards; Tying Knots; Storm-Damaged Trees Poster of Cast and Crew in Ask This Old House - Season 7 - Episode 23 - Basement Wallboards; Tying Knots; Storm-Damaged Trees](http://es.actoragecheck.com/lost-image.jpg)
Ask This Old House - Season 7 - Basement Wallboards; Tying Knots; Storm-Damaged Trees (Episode 23)
Episode Aired On:
Saturday, March 7 2009
15 years ago
Saturday, March 7 2009
15 years ago