Ask This Old House season 22 episode 22
Episode title: Paint Dark Basement, Bat House
Mauro Henrique shows a homeowner how to brighten up her basement apartment by painting with various paint concentrations; Richard Trethewey and Mark McCullough explain a variety of culprits and solutions for basements that are struggling with water issues; In Build It, Kevin O'Connor and Tom Silva show how to construct a bat house.
