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 E24: Hand-Turned Spindle Replication
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.
S21 E23: Flagstone Repairs, Tub Diverter
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.
S21 E22: Cold Water Bathtub, Cornhole
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.
S21 E21: Full Sun Garden, Floor Patch
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.
S21 E20: Transition Garden, Granite Post
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.
S21 E19: Attic Insulation, Asphalt Parking Spot
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.
S21 E18: Oven Ventilation, EV Charger
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.
S21 E17: Fireplace Painting, Bathtub Tray
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.
S21 E16: Wetlands, Foundation Painting
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.
S21 E15: Shed Organization, Pea Stone Walkway
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.
S21 E14: Dimmer Switch Troubleshooting, Clothes Rack
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.
S21 E13: Fire Pit, Window Restoration
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.
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.