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Do I Need to Caulk between a Window J-Channel and Window Frame?

  • Transcript

    LESLIE: Now we’re heading to South Dakota where David is on the line. What can we do for you today?

    DAVID: I just had my 120-year-old house sided with new vinyl siding. I got relatively new vinyl windows. And I’m curious, do I caulk between the J-channel and the window frame on the outside?

    TOM: No, you don’t have to.

    DAVID: OK. That’s not necessary?

    TOM: Nah, it’s not necessary. It should be watertight the way – if the installers put it in correctly, it should be watertight as it is. If they need – if it needed to be caulked, they would have done that. I know it looks like there’s a big gap there but that’s pretty typical. And you generally don’t have to caulk between the back of the J-channel and the side of the window.

    DAVID: Yeah, I was just worried about if it rains from a certain angle it’s going to, you know, wick down through that gap and then run behind the siding?

    TOM: Usually, that’s pretty tight and it won’t happen. I mean there’s no reason you can’t caulk it but I don’t necessarily think you have to do it.

    DAVID: OK. That’s all I wanted to know.

    TOM: OK. Well, good luck with that project. Thanks so much for calling us at 888-MONEY-PIT.
     

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