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How to Repair a Bad Flooring Joint | Ask This Old House

Ask This Old House general contractor Tom Silva repairs a piece of wood nosing that was poorly installed and resulted in a bad joint.
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Time: 1-2 hours

Cost: $20

Skill Level: Moderate

Tools List for Repairing a Bad Flooring Joint:
Reciprocating saw [https://amzn.to/2NDitD3] Chisel [https://amzn.to/2MOli4n] Nail pulling pliers [https://amzn.to/34cRnIN] Hammer [https://amzn.to/2NR7TIT] Track saw [https://amzn.to/34bBmCW] Mortising machine [https://amzn.to/2MItK5v]

Shopping List:
Wood glue [https://amzn.to/2ZCXhzl] Construction adhesive [https://amzn.to/2Lc02Ut] 16d nails [https://amzn.to/2L90u5B] Floating tenons [https://amzn.to/2L8jm4W]

1. Use a dull chisel to lift the nosing slightly to allow room for a reciprocating saw blade. Use the saw to cut the nails that hold the nosing and then remove the nosing.
2. Pull the nails from the board, then scrape any old adhesive or filler off the nosing.
3. Lay a straight edge on the widest gap on the flooring and then use a track saw or circular saw to cut all the flooring evenly.
4. For the area where the saw blade can’t reach, chisel out the floor boards so they’re flush with the other boards.
5. Check the fit of the nosing.
6. Mark lines on the nosing and the floor boards for the location of mortises and cut them on both surfaces with a mortising machine.
7. Use wood glue to install the floating tenons into the mortises of the nosing.
8. Apply construction adhesive to the subfloor under the nosing and wood glue along the edge of the flooring.
9. Bring the nosing in, line up the tenons with the mortises on the floor, and slowly tap the nosing in place with a hammer.
10. Once the floor joint is tight, secure the nosing in place with 16d nails.

About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we’re ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O’Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Repair a Bad Flooring Joint | Ask This Old House


  1. Oh it wasn’t that hard to do huh???? 🔨🤨…

  2. Cut outside…my house isn't your workshop 😁

  3. "What I'm going to do is work it right in, and tap it in as we go down." Talking about the board, or the girl, lol….

  4. Tom had dinner with her a week later, i hear they chat online still, true story

  5. He shows people how to do those pesky little details that would cost $1,000

  6. " Oh, Tommy, I dont know how I could ever repay you " …..

  7. Looks like a drunken Stevie Wonder did that task on a Friday after lunch the first time

  8. 6:48 oh you can say that. That was possible through smart decisions based on years of experience.

  9. Read John 3:36 in your Bible


  10. '' wasn't even that hard to do''— sure woman, try it yourself with your Walmart hammer and Kmart saw

  11. Domino cost 1,200 dollars without the bits and the track saw could be G.

  12. that woman has some of the best legs I've ever seen. Nice flooring work too.

  13. We don't have to many of these type of old timers around anymore

  14. I'm surprised this dickhead didn't try to shove some stain drenched rope in it. Pokey bastard probably charged 10 grand and took 2 weeks to repair.

  15. Is it just me or is this a ton of wasted effort? That gap was negligible, seems like overkill to get a contractor and spend good money on stuff like that…

  16. Tommy Siva is an incredible craftsman! Great repair.

  17. Kate: It was not even that hard to do
    Tommy: Why you call me then beeotch?

  18. Tommy: Kate bend over
    KAte: Oh my Tommy
    Tommy: I meant to bend over the wood to remove it
    Kate : 😒

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