Season 20
39 episodes · Sep 30, 2021
Season Videos
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S20E1Two-Prong Outlet; Deck Stair Rail
Sep 30, 202130mRichard 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 deck stair railings.
S20E2Durable Landscape; Cutting Board
Oct 7, 202130mJenn 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, cherry, and maple.
S20E3Hole Patches; Threshold Repair
Oct 14, 202130mJenn discusses creative options for ground cover plants; Tom demonstrates different techniques for patching wall holes; Mark demonstrates how to patch brick holes; Nathan installs a new threshold.
- S20E4
Wood Floors, DIY Ice Rink
Oct 21, 202130mMauro 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 ice rink.
- S20E5
Smart Doorbells, Recessed Lights
Oct 28, 202130mRoss 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 install recessed lights.
- S20E6
Easier Plumbing, Roofing 101
Nov 4, 202130mMark 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 shingles.
- S20E7
Fall Garden Tips, Paint Cabinets
Nov 11, 202130mJenn 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 door trim.
- S20E8
An AskTOH Barn Raising
Nov 18, 202130mThe 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 exterior door.
- S20E9
Drill Drivers, Patios Expansion
Nov 25, 202130mIn 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.
- S20E10
Camilla's Workshop
Dec 16, 202130mGeneral 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 of Camilla's work, the two discuss her need for a workspace of her own. With a worktable in mind, Tom invites her back to the workshop to help with the special project, a birdhouse.
- S20E11
Holiday Projects
Dec 23, 202130mJenn 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 Christmas ornaments.
- S20E12
Wifi Extension, Tub Drain
Dec 30, 202130mIn 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 Years' Resolutions.
- S20E13
Rot Repair, Heat Pumps
Jan 6, 202230mMark 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.
- S20E14
Patch Plaster, Sinking Drywell
Jan 13, 202230mHeath 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 below grade.
- S20E15
Celebrating 20 Years
Jan 20, 202230mThe 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 moving forward.
- S20E16
Vinyl Floor, Heating Bill Savings
Jan 27, 202230mJenn 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 replace a vinyl kitchen floor.
- S20E17
Water Fountain, Supply Chains
Feb 3, 202230mJenn 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 faced dealing with ongoing supply chain issues.
- S20E18
Porch Base Column Repair, Smart Thermostats
Feb 10, 202230mRichard 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 replaces an old, rotted porch column base.
- S20E19
Shrub Harvesting, Building A Box Joint Jig
Feb 17, 202230mJenn 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 serving tray using a box joint jig.
- S20E20
Concrete Driveway, Spray Paint
Feb 24, 202230mNathan 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 replaces an old, patched driveway with a new concrete one.
- S20E21
Front Hall Closet, Block Retaining Wall
Mar 17, 202230mJenn 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-in drawers, cubbies and shelves for a front hall closet.
- S20E22
Fireplace Repairs, Simple Clog Fixes
Mar 24, 202230mHeath 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 fireplace and replaces its cover.
- S20E23
Window Flower Boxes, Smart Electrical Panels
Mar 31, 202230mTom 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 fill new window flower boxes.
- S20E24
Sagging Fence Gate, Shipping Container Pool
Apr 7, 202230mNathan 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 and resecure a sagging fence gate.
- S20E25
Wobbly Toilet, Led Lightbulbs
Apr 14, 202230mNathan 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 faucet handle.
- S20E26
Vinyl Fence, Building A Beehive
Apr 21, 202230mJenn 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 an outdoor vinyl fence. Tom builds a beehive out of wood.
- S20E27
DIY Birdbath, Dog Chew Wood Repair
Apr 28, 202230mNathan 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.
- S20E28
Garage Door Replacement, Emergency Plumbing Fixes
May 5, 202230mRoss 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 door.
- S20E29
All About Hydrangeas, Refinish Deck Railing
May 12, 202230mJenn shows off different varieties of hydrangeas; Heath explains types of smoke and carbon monoxide detectors and their functions; Mauro refinishes deck railings and posts.
- S20E30
Replacing a Toilet Seat, Full Mortise Lockset Repair
May 19, 202230mRichard shows how to replace a toilet seat; Jenn Largesse builds a pergola for her backyard; Nathan repairs a century-old full mortise lockset.
- S20E31
All About Succulents, Under-Sink Water Filter
May 26, 2022Jenn talks about different types of succulents; Richard installs a reverse osmosis under-sink water filter; Tom builds a classic milk stool.
- S20E32
Basic Electrical Tools; Home Energy Assessment
Jun 2, 2022Using common electrical tools; an in-depth home energy assessment; painting.
- S20E33
Happy Father's Day
Jun 23, 2022Team members talk about their fathers as mentors; airflow in buildings; finishing a baseball bat display case.
- S20E34
Moving a Ceiling Light Fixture; Tool Lab -- Finish Nailers
Jun 30, 2022Kevin 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 nailers.
- S20E35
Crown Molding for Corner Angles; The Future of Solar
Jul 7, 2022Heath 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 angles; Ross explains the future of solar at MIT.
- S20E36
Track Saws, Adding A Receptacle
Jul 14, 2022Mauro 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 kitchen island.
- S20E37
Deck Chairs, Damp Basement
Jul 21, 2022Tom 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 basement.
- S20E38
Pond Maintenance, Demilune Table
Jul 28, 2022Mark explains finishes for brick and concrete; Jenn shows how to maintain a small backyard pond; Tom builds a three-legged Demilune table.
- S20E39
Pizza Oven Repair, What Is It?
Aug 4, 2022Nathan 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?"