Season 21 - Ask This Old House Episodes

Nathan and Jenn brainstorm what to do with a fallen red oak tree; Nathan shows how to mill the tree; The team play a special Ask This Old House headband game; Finally, Tom and Nathan build a bar top.

Heath installs a new circuit for a breaker that trips when the dehumidifier is running; Tom demonstrates safety techniques for common table saw injuries; Richard installs a fireplace insert.

Tom helps a homeowner who's missing balusters from their Queen Anne Row staircase and heads to his workshop to replicate the spiral detailed spindles on his lathe. After, Tom installs the spindles.

Richard troubleshoots a leaky shower and explains why it was a unique repair; Heath deep dives into wire gauges and the electrical load of each; Mark repairs a homeowner's flagstone entryway.

Richard installs a reserve tank to fill a bathtub with hot water; Mauro shares his tips for paint project clean-up; Tom and Kevin build a set of cornhole boards; The cast have a cornhole tournament.

Jenn transforms a dried-out side yard into a full sun garden; Mark shares how to perform hardscape cleaning; Tom patches holes in a wood floor leftover from a previously removed radiator.

Jenn shares her love of hiking and how it inspires her landscape designs. Then, she installs a sun and shade garden; Tom explains gutter downspouts; Mark engraves an 1800s granite post.

Ross helps a homeowner with ice dams decide on how to insulate his attic; Richard shares how to do simple repairs for irrigation leaks; Mark expands a driveway by adding an asphalt parking spot.

Richard travels to Philadelphia to install a new gas oven and vented microwave; Jenn and Kevin head to the garden center to talk pollinator plants; Ross learns about the future of solar EV chargers.

Mauro helps a homeowner upgrade a fireplace by painting the brick; Jenn and landscape contractor Lee Gilliam discuss landscape tool maintenance; Tom and Kevin build a bathtub tray.

Jenn and a specialist discuss wetlands; Ask This Old House spotlights general contractor Zack Dettmore; Ross demonstrates how IAQ testing works; Mauro paints a concrete foundation.

Nathan heads to Texas to help a mom organize her shed; Richard stresses the value of a furnace service call; Mark boosts confidence in homeowners; then, he installs a pea stone walkway.

Jenn shares why she loves bringing her dog to work; Heath helps a homeowner troubleshoot a strobing dimmer switch; Ross explains the benefits of smart bath ventilation; Tom builds a DIY clothes rack.

Tom and a window restoration specialist repair an 1880s window; Mauro talks through different interior paint finishes and their uses; Jenn and Mark help a homeowner in Georgia install a firepit.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.