E21 | New Shade Pattern, HVAC Showroom | Ask This Old House

Lee Gilliam helps a homeowner improve the soil conditions of her garden bed before installing new plantings; a New Hampshire painter and business owner shares her journey in the trade; Heath Eastman helps a homeowner mitigate bathroom moisture by installing a remote bath vent and timer switch but runs into some trouble when he finds old wiring in the wall.

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.

Jenn helps a couple rethink their front yard after two removed trees changed the shade pattern of the space; Richard talks about the mentors who helped him become a passionate teacher on This Old House; Richard gives Kevin a tour of the building he and his son, Evan Trethewey, have renovated to bring a new experience of mechanical equipment to contractors