Ask This Old House: Season 20
Season 20 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Ask This Old House Season 19.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 20 Progress Shield
Two-Prong Outlet; Deck Stair Rail
Sep 30, 2021 · 30 min
Richard discusses pipe soldering; Heath explains what two-prong receptacles are, why they're no longer to code, and how to replace them; Nathan and Mauro build, install, and paint
Durable Landscape; Cutting Board
Oct 7, 2021 · 30 min
Jenn creates a landscape that can withstand heavy pedestrian traffic; Richard explains the options available for water heaters; Tom and Kevin build a cutting board out of walnut, c
Hole Patches; Threshold Repair
Oct 14, 2021 · 30 min
Jenn discusses creative options for ground cover plants; Tom demonstrates different techniques for patching wall holes; Mark demonstrates how to patch brick holes; Nathan installs
Wood Floors, DIY Ice Rink
Oct 21, 2021 · 30 min
Mauro demonstrates how to remove dried paint from a paintbrush; Tom shares the best techniques for connecting and installing tongue and groove flooring; Jenn and Nathan build a DIY
Smart Doorbells, Recessed Lights
Oct 28, 2021 · 30 min
Ross discusses the pros and cons of smart doorbells; Mauro demonstrates techniques for painting wood paneling; Heath shares some of his most-used tools and helps a homeowner instal
Easier Plumbing, Roofing 101
Nov 4, 2021 · 30 min
Mark explains how bricks are made and how many different varieties there are; Richard explains how solderless connections work; Tom assess and reshingles a shed roof with asphalt s
Fall Garden Tips, Paint Cabinets
Nov 11, 2021 · 30 min
Jenn shares her list of must have gardening tools and how to put a garden to bed before winter; Mauro demonstrates how to paint a kitchen cabinet; Nathan installs exterior front do
An AskTOH Barn Raising
Nov 18, 2021 · 30 min
The entire team comes together to help Mark rebuild the chicken barn he lost to a fire. They reframe the barn, hook up new electrical wiring, connect a utility sink, and hang an ex
Drill Drivers, Patios Expansion
Nov 25, 2021 · 30 min
In Tool Lab, tool expert Chris Ermides demonstrates how tables saw blades work; Heath explains why and how to use a voltage tester; Mark helps a homeowner extend her existing patio
Camilla's Workshop
Dec 16, 2021 · 30 min
General contractor and expert woodworker Tom Silva meets past guest and young woodworker Camilla in her dad's shop where they catch up since they last met. After checking out some
Holiday Projects
Dec 23, 2021 · 30 min
Jenn explains how to identify and care for holly plants; Richard explains how dishwashers work and how to troubleshoot them when they don't drain properly; Tom and Kevin turn Chris
Wifi Extension, Tub Drain
Dec 30, 2021 · 30 min
In Tool Lab, Nathan explains what different table saw blade types are used for; Ross extends WiFi service in a house; Richard replaces a faulty tub drain; the team shares their New
Rot Repair, Heat Pumps
Jan 6, 2022 · 30 min
Mark shares the story of how he became a mason; Tom explains why wood rots on houses, how to prevent it, and how to repair it if it occurs; Ross explores heat pump technology.
Patch Plaster, Sinking Drywell
Jan 13, 2022 · 30 min
Heath explains why finish electrical work is his favorite stage of the job; Mauro demonstrates how to repair a crack in plaster; Mark raises a drywell in a driveway that is sinking
Celebrating 20 Years
Jan 20, 2022 · 30 min
The entire cast reflects on the 20th anniversary of ASK THIS OLD HOUSE. They'll discuss how the show was made and what they think the legacy of the television program will be movin
Vinyl Floor, Heating Bill Savings
Jan 27, 2022 · 30 min
Jenn shares the story of how she became a landscape designer; Richard and Ross explain cost-effective ways to save money on your heating bill this winter; Nathan helps a homeowner
Water Fountain, Supply Chains
Feb 3, 2022 · 30 min
Jenn and Mark show how to make a stone water fountain for your garden; In Tool Lab, Nathan breaks down Miter Saw blades; The team comes together to discuss the challenges they've f
Porch Base Column Repair, Smart Thermostats
Feb 10, 2022 · 30 min
Richard shares how he became a plumber and what he loves about his trade; Ross talks about smart thermostats and their features; Heath explains how to understand switch legs; Tom r
Shrub Harvesting, Building A Box Joint Jig
Feb 17, 2022 · 30 min
Jenn visits a nursery to learn how shrubs are planted and harvested; Ross and Nathan show cost-effective ways to air-seal your windows this winter; Tom demonstrates how to build a
Concrete Driveway, Spray Paint
Feb 24, 2022 · 30 min
Nathan gives a tour of his highly organized truck; Richard shows different kinds of bidets and their functions; Mauro explains how to use spray paint for small home projects; Mark
Front Hall Closet, Block Retaining Wall
Mar 17, 2022 · 30 min
Jenn Nawada explains how you can compost at home; Jenn Largesse and her landscape contractor install a concrete block retaining wall in Jenn's backyard; Tom constructs custom built
Fireplace Repairs, Simple Clog Fixes
Mar 24, 2022 · 30 min
Heath breaks down the basic voltages of cordless tools; Richard gives an overview on how to handle simple clogs in a bathroom sink, kitchen sink and toilet; Mark repairs a fireplac
Window Flower Boxes, Smart Electrical Panels
Mar 31, 2022 · 30 min
Tom shares how he became a general contractor and what he loves about his trade; Heath and Ross explain what smart electric panels are and how they work; Jenn and Nathan build and
Sagging Fence Gate, Shipping Container Pool
Apr 7, 2022 · 30 min
Nathan demonstrates different ways to fix scratches on wood furniture; Jenn Largesse oversees the installation of a shipping container pool in her backyard; Tom shows how to fix an
Wobbly Toilet, Led Lightbulbs
Apr 14, 2022 · 30 min
Nathan shares how he became a carpenter and what he loves about his trade; Heath talks all about different LED light bulbs; Richard fixes a wobbly toilet and repairs a sticky fauce
Vinyl Fence, Building A Beehive
Apr 21, 2022 · 30 min
Jenn Nawada suggests houseplants for areas of shade, partial shade and sun. Heath explains techniques for drilling holes to run electrical wire. Jenn Largesse shows how to put up a
DIY Birdbath, Dog Chew Wood Repair
Apr 28, 2022 · 30 min
Nathan shows how to mount a flat screen TV on a wall. Mark builds a stone birdbath. Tom repairs a Newel post damaged by a dog.
Garage Door Replacement, Emergency Plumbing Fixes
May 5, 2022 · 30 min
Ross shares why he became an engineer; Tom talks about different types of hammers; Richard shows how to control common plumbing emergencies; Nathan removes and replaces a garage do
All About Hydrangeas, Refinish Deck Railing
May 12, 2022 · 30 min
Jenn shows off different varieties of hydrangeas; Heath explains types of smoke and carbon monoxide detectors and their functions; Mauro refinishes deck railings and posts.
Replacing a Toilet Seat, Full Mortise Lockset Repair
May 19, 2022 · 30 min
Richard shows how to replace a toilet seat; Jenn Largesse builds a pergola for her backyard; Nathan repairs a century-old full mortise lockset.
All About Succulents, Under-Sink Water Filter
May 26, 2022
Jenn talks about different types of succulents; Richard installs a reverse osmosis under-sink water filter; Tom builds a classic milk stool.
Basic Electrical Tools; Home Energy Assessment
Jun 2, 2022
Using common electrical tools; an in-depth home energy assessment; painting.
Happy Father's Day
Jun 23, 2022
Team members talk about their fathers as mentors; airflow in buildings; finishing a baseball bat display case.
Moving a Ceiling Light Fixture; Tool Lab -- Finish Nailers
Jun 30, 2022
Kevin O'Connor explains how he became host of "This Old House"; a simple trick for drawing a perfect ellipse; moving a light fixture and patching the ceiling; the basics of finish
Crown Molding for Corner Angles; The Future of Solar
Jul 7, 2022
Heath shares why he became an electrician and what he loves about his trade; Mauro shows a trick for applying caulk in gaps; Tom shows how to install crown molding around corner an
Track Saws, Adding A Receptacle
Jul 14, 2022
Mauro shares why he became a painter and what he loves about his job; Jenn shows how to test soil at home; Nathan explains how to use track saws; Heath adds a receptacle to a kitch
Deck Chairs, Damp Basement
Jul 21, 2022
Tom shares a trick to space balusters evenly; Heath shows how to drill holes in studs to run wire; Jenn Largesse builds DIY deck chairs; Richard explains ways to deal with a damp b
Pond Maintenance, Demilune Table
Jul 28, 2022
Mark explains finishes for brick and concrete; Jenn shows how to maintain a small backyard pond; Tom builds a three-legged Demilune table.
Pizza Oven Repair, What Is It?
Aug 4, 2022
Nathan explains the anatomy of track saws; Mark repoints an outdoor pizza oven; The Ask This Old House team comes together for a 20th Anniversary "What Is It?"