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How to Repair a Crack in Drywall

  • Transcript

    LESLIE: Now we’ve got Nicole in Illinois on the line who needs to fix a crack in a wall. And you’re saying it’s from an earthquake? When did you have an earthquake in Illinois?

    NICOLE: Well, it was just a really small earthquake. We get them just randomly, about one or two a year.

    TOM: Wow.

    NICOLE: Because we’re right on – there’s some fault that’s down south of us.

    TOM: And now that fault has worked its way up into your wall. So what does it look like? How big of a crack is this that we need to fix?

    NICOLE: It’s about an 18-inch crack and then that’s going down from the ceiling. And then it goes like – it goes diagonally up the wall and then hits the ceiling and then just moves horizontally on the ceiling for a couple of inches.

    TOM: So it’s 18 inches long altogether?

    NICOLE: Yeah.

    TOM: How old is the house?

    NICOLE: It’s not very old, like ’99.

    TOM: OK. So it’s a drywall crack then.

    NICOLE: Yes.

    TOM: Many people will simply spackle that but the problem is that if you spackle that crack, the wall is now always going to move – and walls always do move but now that the wall has a crack, the two sides of that are going to move at different rates. And so that crack will reform. The way you stop that from happening is by taping over that crack with drywall tape and then spackling it.

    Now, taping with paper drywall tape can be a bit tricky, so there’s a product out that’s a perforated drywall tape that looks like a netting. It’s like a sticky-backed netting. And that type of perforated tape is the best one to use because you put the tape on first and then you spackle over it. You want to do two or three coats, starting with smaller coats and then working wider as you go.

    And remember, the thinner the coat the better; I’d rather you put on more coats than put on too much spackle, which too many people tend to do. Then it kind of gets all gooped up and piled up on your wall and you’ll see it forever. So, thin coats – two or three thin coats – and that should do it.

    NICOLE: OK. Alright. Thank you.

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