Ask This Old House S24E12: Ceiling Paint, Squeaky Floors, Siding Costs, and Smart Meters

Season 24, Episode 12 is a four-part lesson in deferred consequences. Tape left on a wall too long, a nail that worked itself proud, a siding choice made on price alone, a meter that nobody thinks about until the bill arrives. None of these problems announce themselves. They just wait.

Also, Kevin gets genuinely excited about an app, which is not something I expected to type this week.

Mauro and Melissa fix a ceiling the tape already damaged

Melissa spent a year finishing her kitchen, and the living room was next. The ceiling was the last thing left — not because it was hard, but because it had already been painted when they moved in, and when they taped off the crown molding to paint the walls, pulling that tape took old paint with it. Chipped corners, all the way around.

Mauro Henrique diagnoses it in about ten seconds. Wrong tape, or right tape left on too long. Both, in this case. He shows Melissa the roll he brought — a medium-adhesion painter's tape — and explains the part most homeowners skip: every tape has a window. Put it on, and then respect the clock for taking it off. Melissa admits they left theirs up for months.

Before any paint comes out, the room gets stripped back. Furniture to the next room, floors covered. Then Mauro pulls the ceiling light down, and a puff of blown-in insulation dust comes with it. That's a detail worth flagging: if your ceiling has loose-fill insulation sitting on top of it, every fixture you drop is a small dust event. Have a vacuum nearby and a rag over the opening. Mauro puts the fixture back and plans to cut around it with a brush rather than remove and reinstall it, which is faster and keeps the wire nuts out of the conversation.

The cut-in technique is the actual teaching here. Angled sash brush, loaded lightly, working the tip into the corner against the crown, then dragging back to spread the paint out. Melissa asks how much paint goes on the brush. Just enough, and not fast. Mauro's three rules land the same way for brush and roller: correct amount of paint, speed, consistency throughout.

One question she raises is worth repeating. Do you need ceiling-specific paint? No. Mauro says it's preference. Eggshell on a ceiling is a legitimate choice, but flat reflects less light and hides the flaws better. Primer is only needed over raw plaster that has never been painted, or when you're converting a gloss finish to flat. This ceiling was already flat, so they went straight to white.

Two coats, with a drying break the show compresses to a few seconds of music. Painting overhead is arm work, and Melissa says so out loud. If you're planning this at home, budget your shoulders accordingly and don't try to finish two coats in one evening.

If this feels like a slower, upstream cousin to Mauro's segment in S24E14, where he was rescuing paint that had already hit the floor, that's because it is. The E14 lesson was act fast. This one is about never needing the fast reaction in the first place.

Heath and Ross walk Kevin through the meter on the side of your house

No house call here — just Heath Eastman, Ross Trethewey, and three meters on a table, plus Kevin making coffee jokes. The segment is a quick history of the box your utility reads, and it's more interesting than it sounds.

The analog meter is the glass-case mechanical one with the rotating dial. More power used, faster the disc spun. A utility worker walked the route, wrote down the meter number and the kilowatt-hour total, subtracted last month, and mailed a bill. Digital meters added accuracy and one-way communication, so the utility could read remotely instead of walking.

Smart Meter 1.0 is where most of the country is now. Two-way communication means the utility can also send commands back — including a remote disconnect, which Heath frames around emergency response: fire, gas leak, first responders. Ross notes the data ships every 15 minutes. That's frequent, but it isn't real time. Smart Meter 2.0, as described, is real time: instant outage detection at the house level, granular load data, and a consumer login or app so a homeowner can watch their own usage.

Worth saying plainly, since segments like this can read like an invitation: the meter is utility property. You don't swap it, you don't pull it, you don't break the seal. This is a building-science conversation, not a project. Ross returning to an energy-monitoring topic is familiar territory — he was doing the same kind of load-watching in S24E13, where an infrared camera told the story of a split heat pump water heater.

Nathan lays out the siding cost ladder

Nathan Gilbert says his phone is ringing with siding questions, which tracks. He lines up three materials and sorts them by budget, installation, and repaint interval.

Vinyl, in a double-four profile, gives you two 4-inch courses at once, so it goes up fast. It can go over existing siding, which is why you see it on so many remodels. Annual pressure wash, no repainting, and — a point Nathan makes that I hadn't thought about — it unzips and rezips around a window or door replacement. Cheapest option by a wide margin. Kevin notes it isn't the first choice on a historic house, and that's fair.

Cedar clapboards are Nathan's favorite material, and the reason is technical, not sentimental. Tapered stock lets him adjust exposure slightly as he climbs the wall so the last course lands cleanly at the top of a door or window. Traditional exposure is 4 inches, but he can shave or stretch it to keep the line. Repaint every 7 to 10 years, with sanding likely. Most expensive of the three.

Fiber cement sits in the middle on cost. Cement, sand, and wood pulp — Kevin's reaction to the wood pulp is worth the watch. It's rot resistant and pest resistant, comes primed, finish-painted, or raw, and is available in different exposures. The tradeoff is adjustability. Nathan says if you try to shrink the exposure on a product set up for 4 inches, you get racking and a visible shadow line as you look up the wall. You either buy a different exposure or you measure to the tops of doors and windows before the first course goes on and run it perfectly.

Repaint interval is 10 to 15 years, which is a real advantage over cedar. Cost order, per Nathan: vinyl cheapest, fiber cement in the middle, cedar most expensive. And within each category there are tiers, so the ladder isn't as simple as three rungs.

The honest takeaway is that this segment is a comparison, not an installation tutorial. Nobody should watch a five-minute siding rundown and start nailing courses. What it does well is give you vocabulary for the contractor conversation.

Tom's squeaky floor fix: tighten the sandwich, then hide the holes

Anthony and his wife bought his grandparents' house, which had been in the family over 70 years. The floors are original. The problem is the hallway outside their 2½-year-old son's bedroom, which announces every trip to the bathroom.

Tom Silva shows up with a mockup, which is the smartest thing in the segment. Finished floor, subfloor, structure, and a nail. His explanation: houses move with humidity. When framing swells, it can lift a nail slightly if the nail isn't seated tight or if there's a void or knot where it lands. When things dry, the nail stays proud. Now the subfloor and the joist rub on that nail, and that's your squeak. Someone had already tried driving nails down through the finished floor upstairs, which flattened the noise temporarily without fixing the mechanism.

The kit Tom brings uses an attachment that holds a special screw at the surface of the finished floor. The screw has a smooth shank, then a break line, then threads. Drive it through the finished floor and subfloor into the joist, and the torque of the drill snaps the head off below the surface. No visible head, no squeak.

Finding the joist is the part that gets cut short on television and shouldn't. Tom notes the house probably isn't framed 16 inches on center — old framing is often random. He taps and listens for a solid sound instead of hollow. He marks a candidate with blue tape, then tests it with a small-thread bit on a smooth shaft: if there's structure, the thread grabs and pulls the drill down; if not, it drops through. He confirms by running the drill in reverse — structure pushes the bit back out. He lands one at the 24-inch mark.

Then Anthony stands on the board while Tom drives screws, which presses the sandwich together so the screw can pull it tight. This is a two-person job in the literal sense, and it's the kind of unglamorous helper task that would score well on the Helper Scorecard I started keeping back in S24E7. Anthony earns his keep.

Not every screw snaps. Tom tries one, gets nothing, and moves beside it. He says the old framing may be too soft to grab. That's the real-world caveat: this fix works when the screw finds solid wood, and old houses don't always cooperate.

Finish is wax sticks in three tones, worked into the holes and blended, then buffed. Not a perfect color match, but at standing height you can't find them. The final test is Anthony walking the hall in both directions. The lack of sound is the win.

DIY Confidence Scale

Ceiling repaint: 6/10. Overhead work, two coats, and cut-in around a fixture. Manageable for a careful homeowner who respects tape removal windows and doesn't rush the dry time. The tape lesson alone is worth the episode.

Squeaky hardwood floor: 5/10. The screw kit makes it approachable, but only if you can locate joists. Random old framing and soft lumber can turn a fifteen-minute fix into a scavenger hunt.

Siding comparison: 2/10 for DIY, 10/10 for hiring. Great information, zero installation instruction. Use it to ask better questions of a contractor, not to buy a nail gun.

Utility meters: 0/10. Utility-owned equipment, sealed for a reason. Watch, learn, don't touch.

Additional Resources

• Watch the full episode on PBS
• Official This Old House episode page

Of the four, the ceiling is the one most of us could actually finish this weekend — and the one most likely to be undone later by a roll of tape left up too long. Which is the real lesson: the repair is easy, the discipline is the hard part.