26 aired episodes
Independent episode guide to the 26 aired Ask This Old House Season 24 recaps on this site, from episode 1 through episode 26, in broadcast order.
Recaps on this site, in episode order.
September 25, 2025 · 6 min
Heath Eastman tours a New Orleans copper lantern shop, then installs hand-riveted electric fixtures on a double shotgun with a local electrician. Richard Trethewey uses a cutaway to explain why a second flush is usually the wrong move, and Mauro Henrique preps, spot-primes, and DTM-paints a 15-year-old metal patio set.
October 2, 2025 · 8 min
Lee Gilliam rebuilds a coastal Massachusetts driveway with reclaimed stone edging and a 3-inch layer of local shells, keeping the hardpack base intact. Ross Trethewey and a certified mitigator diagnose a 100-year-old slab with grab samples and a manometer, then install a sub-slab depressurization system with an exterior fan wired by Heath Eastman.
October 9, 2025 · 7 min
Tom Silva treats water rings with vinegar, baking soda, heat, and olive oil, Jenn Nawada sorts houseplant soil by epiphytes, aroids, and succulents, and Mark McCullough repairs a breezeway brick floor with spot pointing instead of a full repoint.
October 16, 2025 · 7 min
Kevin O'Connor gets a decibel demo from an audiologist: a miter saw over 100 dB, a drill around 85, and hammer strikes peaking above 120. Then Richard Trethewey, Heath Eastman, and Nathan Gilbert turn a bathroom closet into a first-floor laundry for Jim and Michele, with new 20-amp and 30-amp circuits, a 2-inch drain, a relocated thermostat, and a hallway door. The part TV compresses: getting the vent, valve box, wiring, and framing to share one wet wall.
October 23, 2025 · 6 min
Lee Gilliam helps Rhonda replace a missing privacy screen with Green Giant arborvitae, Mark McCullough sorts the fireplace set by safety and function, and Tom Silva builds a rolling 2x4 rack so six storage totes slide out individually instead of becoming a stack.
October 30, 2025 · 9 min
Jenn Nawada visits a Rhode Island sod farm to see wildflower mats and sheep's fescue, Tom Silva explains nail heads and shanks, and Heath Eastman lights a dark driveway with landscape fixtures, an oversized transformer, and smart controls.
November 6, 2025 · 9 min
Nathan Gilbert returns to Gulfport to see how the Seabees still train builders and steelworkers from zero background, Tom Silva walks Kevin through ball sizes, hitch height, wiring, and a torsion hitch heavy enough to need two people, and Mauro Henrique rescues a five-year-old galvanized railing by stripping, cleaning, priming, and switching to DTM acrylic enamel.
November 13, 2025 · 8 min
Lee Gilliam tackles a lumpy, mossy backyard with a dethatcher, a leveling rake, and a toddler’s help. Jenn Nawada breaks down houseplants by light exposure. Nathan Gilbert swaps hollow-core interior doors for solid-core slabs—and shows why rushing to prehung is a mistake.
January 1, 2026 · 6 min
Nathan Gilbert helps an expectant mom tame garage chaos with a 600-pound-rated ceiling rack and heavy-duty shelving. Heath Eastman sorts out the traveler-wire puzzle behind three-way smart switches. Richard Trethewey opens up a neglected water heater and shows why the anode rod matters—and what happens when you ignore it for eight years.
January 8, 2026 · 7 min
Jenn Nawada heads to Coeur d'Alene, Idaho, to help Adam—whose weekly Monday Night Dinners now draw hundreds—redesign his backyard with an outdoor kitchen, a stone pathway, and fresh sod. Then Mark McCullough swaps out two rusted, off-kilter window wells, showing the proper demo, drainage, and galvanized steel install.
January 15, 2026 · 8 min
Richard Trethewey shows a no-wax flange kit with a rubber seal and longer bolts that handles a raised tile floor. Lee Gilliam walks Kevin through fuel, air, and spark on a gas mower, including ethanol separation and a genuinely filthy carburetor bowl. Nathan Gilbert turns a Cape's bar closet into a double-door speakeasy hidden behind a bookcase.
January 22, 2026 · 8 min
Mauro Henrique repaints a ceiling after tape yanked old paint off the corners, Tom Silva quiets a hardwood floor with snap-off screws and wax sticks, Nathan Gilbert ranks vinyl, cedar, and fiber cement by budget and maintenance, and Heath Eastman and Ross Trethewey trace the utility meter from spinning dial to real-time data.
January 29, 2026 · 6 min
Ross Trethewey installs a split heat pump water heater that puts the evaporator outside, making it a cold-climate winner. Jenn Nawada prescribes treatments for mealybugs, spider mites, and fungus gnats. Nathan Gilbert gives a Massachusetts homeowner safe attic access with a new pull-down ladder. Plus: why a frosty panel is actually a good sign.
February 5, 2026 · 8 min
Mauro Henrique shows why speed beats any cleaner when paint hits the floor, Heath Eastman finally makes three-way switches click with a switch he built himself, and Nathan Gilbert and Lee Gilliam build a split rail fence that stops cars and looks good doing it.
February 12, 2026 · 7 min
Tom Silva breaks down caulk types from latex to butyl, Richard Trethewey installs a garbage disposal with an air switch (and drills through granite), and Kevin O'Connor helps the young hosts of Toys and Colors build a dress-up closet with pocket screws and a miter saw.
February 19, 2026 · 6 min
Lee Gilliam follows Kentucky bluegrass from Washington fields through a seed-cleaning plant's screens and gravity table, Mark McCullough compares brick, concrete, bluestone, and granite pavers by pattern and price, and Nathan Gilbert cuts open a porch ceiling to hang a 2,000-pound-rated swing with Freddy as the apprentice.
March 26, 2026 · 8 min
Richard Trethewey separates grease and hair clogs from chemical drain cleaners, Mauro Henrique compares at-home lead swabs with an XRF analyzer, and Mark McCullough sets granite treads into a New Hampshire slope so Pete can reach his fire pit without another tumble.
April 2, 2026 · 8 min
Nathan Gilbert and New Orleans carpenter Scot replace rotten Bywater shutters in Spanish cedar under historic-district rules, Jenn Nawada and Lee Gilliam decode NPK and organic versus synthetic fertilizer with Kevin, and Heath Eastman swaps battery detectors for interconnected hardwired smoke and CO alarms after a fire chief walks through placement.
April 9, 2026 · 7 min
Mauro Henrique repaints a too-pink nursery and builds a two-arch accent wall with string, low-tack tape, and a fast wet rag; Jenn Nawada separates air-purifying pothos claims from citronella candles and root pruning; Mark McCullough sets a 16-by-14 pea stone patio with a retaining wall, drain pipe, binding agent, and a 72-hour cure.
April 16, 2026 · 8 min
Nathan Gilbert measures and installs top-down, bottom-up cellular shades so Cece the guard dog can't see the street; Richard Trethewey walks Kevin through 150 years of toilet tank parts and running-toilet fixes; Jenn Nawada and Frank reshape a steep front slope with a mini excavator, a swale, switchgrass, and hydrangeas.
April 23, 2026 · 8 min
Heath Eastman and homeowner Jeff run a 60-amp feeder from the house panel to a new shed, with Ryan trenching, sand-bedded PVC conduit, two ground rods, and traceable caution tape. Mauro Henrique lays out the painting tools he actually reaches for, and Kevin hosts Compost or Dispose It with Richard Trethewey and Jenn Nawada.
April 30, 2026 · 10 min
Tom Silva teaches Zack Dettmore to turn a bud vase from scrap firewood, Jenn Nawada builds a seed-starting setup keyed to the last frost date, Mark McCullough diagnoses two very different fireplace cracks, and Ross Trethewey gives a pair of 1999 chain-drive openers Wi-Fi control without replacing them.
May 7, 2026 · 7 min
Lee Gilliam and Kevin O'Connor compare gas, battery, and manual push mowers, then cover dry-grass mowing, the one-third rule, blade sharpening, and seasonal cutting heights. The full Ask This Old House bench talks contractor vetting, from license and insurance checks to jobsite visits and Zack Dettmore's dating analogy. Mark McCullough is in Spokane, Washington, replacing an uneven flagstone front walk with a concrete paver walkway on a compacted basalt crusher-run base, sand setting bed, and aluminum edging.
May 14, 2026 · 8 min
Nathan Gilbert pulls vintage ceramic toothbrush and soap holders off a bathroom wall, patches the tile, and mounts a quarter-sawn white oak shelf with brass hooks. Mauro Henrique seals a water stain with shellac primer, patches a ceiling crack with fast-setting joint compound, and recreates the existing swirl texture before repainting.
May 21, 2026 · 8 min
Tom Silva and Kevin O'Connor rebuild the barn picnic table they first built about 17 years ago, swapping in 2x8 seat boards, a 25-degree A-frame, and no finish. Ross Trethewey lays out an outdoor movie setup with a projector, a 1,000-watt-hour battery bank, smart plugs, and IP-rated speakers. Kevin also talks with a licensed insurance agent about dwelling coverage, liability, endorsements, flood policies, and why jewelry may belong on its own policy.
May 28, 2026 · 8 min
Heath Eastman gives Joanna a real outdoor TV setup: a weatherproof enclosure with thermostat-controlled fans and a new receptacle on a dual-function AFCI/GFCI breaker. Kevin O'Connor, Tom Silva, and Zack Dettmore walk through renovation prep, and Mark McCullough swaps a crumbling fire pit for four granite slabs set dry on compacted crushed stone.
