Season 21 - Ask This Old House Episodes
Season 21 of Ask This Old House brings back Kevin, Tommy, Richard, Jenn, and the crew, as they help homeowners tackle their most challenging home improvement projects.

S21 E12: Neighbors Helping Neighbors
The Ask This Old House team partners with Rebuilding Together Boston to gather volunteers, repair a homeowner’s deck, construct a new patio, and install landscape lighting and plantings.
S21 E11: Babyproofing, Septic Systems
In this episode, the team helps a homeowner babyproof her home. Then, Jenn Nawada discusses maintenance for houseplants. Later, Richard Trethewey explains how septic systems work.
S21 E10: Antique Pocket Door, Shaker End Table
In the episode, Nathan Gilbert helps a homeowner install an antique pocket door. Then, Ross Trethewey explains the technology of induction stovetops. Finally, Kevin O’Connor and maker Char Miller-King build a Shaker end table.
S21 E9: Install Cabinet Hardware, Breaker Trips
The team shares about jobs they might have chosen outside their trades; Mauro talks through what tools to use when removing wallpaper; Heath explains breaker trips; Nathan installs kitchen cabinet hardware.
S21 E8: Little Free Library
Kevin and Tom build a Little Free Library for an elementary school; Tom recruits his daughter, Kate, to paint it; Tom and Kevin then install the library with some help from the students.
S21 E7: Paint Tile, Water Tank Replacement
In this episode, Richard Trethewey replaces a hot water tank, and Heath Eastman shares safety tips for hanging electric holiday decorations. Later, Tom Silva explains how to repair woodpecker damage. Finally, Mauro Henrique helps a homeowner paint bathroom tile.
S21 E6: Sandstone Repair, Awning Install
In this episode, Mark McCullough travels to Dallas, Texas, to repair sandstone steps. Then, Ross Trethewey explains how to pick a solar plan without being scammed by the company. Finally, Nathan Gilbert helps a homeowner install an awning.
S21 E5: Wallpaper Restore, Gutter Repairs
Watch as Kevin learns about what goes into restoring historic wallpaper. Then, Heath explains GFCI receptacles, and Tom helps a homeowner repair and repitch their gutters.
S21 E4: Woodland Garden, Chimney Repairs
Jenn plants a native woodland garden; Mauro shows how to patch cracked or chipped porcelain; Mark explains common chimney problems and then shows how to repair a chimney step by step.
S21 E3: Doorbell Retrofit, Driveway Edging
In this episode, Heath installs a doorbell with new wiring, Richard explains bottle traps, and Mark replaces a homeowner’s brick driveway edging with cobblestones.
S21 E2: EV Chargers, China Cabinet Repair
Watch as Heath explains the different levels of EV chargers and their benefits. Mark shows different brick patterns, and Nathan repairs a cracked china cabinet with MDF. Then, Mauro repaints it.
S21 E1: Water Heater Autopsy, Composting
The Ask This Old House team talks about why they enjoy working together; Richard cuts open a failed water heater, and Jenn shares her love of educating kids about the outdoors. Then, she and Nathan build a compost bin.
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