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Plywood ceiling - construction guru

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  • Plywood ceiling - construction guru

    I decided to just rip out the drywall ceiling and replace it with plywood. It also allowed me to raise the ceiling in the lowest spot from 8.5 feet to 9.5 feet. I had to create a new plywood enclosure around a heating vent.

    It was easier to go around it rather than reroute it because it was a main run. Plus going up to 9.5 feet in that area was plenty high.

    So I was kind of lazy. I had a 15 gauge finish nailer that I've used a lot. I have no fancy screw gun. So putting up the plywood I just nail the blank out of the plywood to the joists. I knew from previous experience it would definitely hold up the plywood.

    What I didn't consider until I'm actually doing it. Is that I would also be attached angle iron to the ceiling and using it to pull the screen tight. Meaning I will actually have the extra weight of the screen and the tension to hold it tight pulling down on that ceiling as well.

    Honestly I'm not all that worried but I was wondering if there are any real construction experts that know the holding power of a 15 gauge nail. And yes I went totally crazy with the number of nails. That is why I'm not that worried about it. But still would be nice if anyone has experience with it. Guess my main concern would be hitting the balls over and over again. That action would slowly pull out the nails. i can't imagine it would but maybe this was tried and already failed.

    I don't want to pull down the ceiling and put it back up with screws or full on framing nails. Which I would have to do because i also used 15 gauges nails in the structure that goes around the vent. Although almost all of those are horizontal so really not concerned about them. guess worst case scenario is I run with it for a couple of months or years and see if i get any droop. Then just deal with it then, if it happens.

    I hesitate to even ask because the last thing i want is for someone to say. Yeah you definitely need to rip it all down and put it back up right. My hope is I'm not the only one out there using a 15 gauge brad nailer to do a little more than it was really designed to do.

  • #2
    Carpenter here: I would definitely put some screws through the ply into the joists. Screw off the perimeter and a couple in the centres. Better to be safe than sorry

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    • #3
      I would make sure when putting the angle iron up on the ceiling to hit the joists, this will also help support the plywood. I did the same setup that you did but I did use screws. I am almost finished and will be posting the complete setup. I did a major update on the room.

      Click image for larger version  Name:	sim.jpg Views:	0 Size:	66.2 KB ID:	287937
      Last edited by GolfinToad; 09-14-2020, 09:08 PM.

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      • #4
        Yeah I can atleast just throw a few screws in the plywood. I have 3 levels. 8'9" 9'3" and 10'

        header that runs across the room 8'9"
        duct work 9'3"
        at the screen 10'
        Joysts are actually 10'3"

        so I cant actually get into the studs but no reason not to throw screws through the plywood and into supports I built.

        before and after wall complete gives you an idea

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