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How deep do you drive screws? Help me win an argument!

Viewing 8 posts - 41 through 48 (of 48 total)
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  • #435817
    Doobie
    Moderator

    ill sink them so that they both pull the material together

    If I am using screws for framing, I will do the same. I will keep driving until the two boards suck up together. But then I will add an extra screw and set it properly.

    I do that also for making sure also. The third screw is a small expense.

    #435848

    I don’t understand why someone would sink screws that deep, that means most of the wood at the top doesn’t contribute to the holding strength any more. And like Boschmanbrian said, the core of the PT gets exposed at that point.

    Its like overdriving nails into sheathing…

    Drive em so they’re flush or a little countersunk would be more or less my answer to this.

    Thanks but I can’t take credits for that, I was quoting @jstare who made that great point.

    #435915
    jzmtl
    Pro
    Montreal, QC

    ill sink them so that they both pull the material together

    If I am using screws for framing, I will do the same. I will keep driving until the two boards suck up together. But then I will add an extra screw and set it properly.

    I do that also for making sure also. The third screw is a small expense.

    Situation like that I just drill a pilot hole on top piece that’s larger than the shank (or thread, depends on length) of screw so it doesn’t engage. But I don’t do any production work so the slight delay is not a problem.

    #435955
    cranbrook2
    Pro
    Belgrave, Ontario , Canada

    A hair below flush for me . You never know if you ever have to remove them some day .

    #436105
    madman_us
    Pro
    Palm Springs, CA

    i drive screws right below or flush with the surface.

    "If you're going to do something, do it right the first time"
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    #436110

    They should be flush or just below. If they are put too deep I agree with everyone else’s comments, but it also breaks the fibers of the wood and leaves them exposed and the ends of the fibers will start lifting up and creating splinters as items get caught in the holes (and some naturally too).

    #436116
    Calidecks64
    Pro
    Anaheim Hills, Cali

    If they are on a deck surface I’ll drive them just below the surface to not catch any bare feet.

    #436611
    EthanB
    Pro
    South Kingstown, RI

    I sink them just below flush. Call it dimpled. Exactly like I would for drywall. My primary concern is that if they’re perfectly flush, they may not be tight after the PT has fully dried out. There’s no thread in the piece so the head is providing the tension.

    Overdriving sucks too. I’m not that concerned about the water aspect as I haven’t run into a situation where I’ve seen systemic rot at the screw or nail head due to that. Occasional rot, sure, but not that often and I’ve seen a LOT of over driven nails on decking.

Viewing 8 posts - 41 through 48 (of 48 total)
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