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Nail or screw subfloor

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    Nail or screw subfloor

    Replacing the subfloor in my house, it’s the old plank boards and a bunch of them are cracked/broken. Putting down 3/4” plywood and was going to use liquid nail with either nails or screws, just haven’t decided which one yet. Any suggestions?

    #2
    Screws. 2 1/2”-3” on the joists and 1 5/8” in the field.

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      #3
      No pain, no gain. Another vote for screws.

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        #4
        Squeaky sub floors suck..... screws all the way
        A .45acp says go away in any language ~ Clint Smith

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          #5
          PL 400 and gun ring nails , Use T + G ply

          screws aren't necessary

          squeaks usually happen when the sides of the ply rub together
          Last edited by warmnfuzzy; 03-25-2020, 09:56 PM.

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            #6
            I did my while second floor... pl400 and screws. Rock solid.

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              #7
              The regular construction screws from Home Depot do the trick?

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                #8
                +1 on the PL400

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                  #9
                  I used drywall screws.
                  forgot to add... make sure to get screws into the joists.
                  going with carpet or tile?

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                    #10
                    Originally posted by bberetta1 View Post
                    Screws. 2 1/2”-3” on the joists and 1 5/8” in the field.
                    This.

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                      #11
                      Nail it, then screw it, then have a bowl of cereal, then take a shower.

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                        #12
                        Originally posted by cityrepo61 View Post
                        I used drywall screws.
                        forgot to add... make sure to get screws into the joists.
                        going with carpet or tile?
                        Hardwood floors throughout

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                          #13
                          Chef's Special: Whatever is lying around the job or floating around the truck.
                          Giza Development: Building and Renovating Pyramids of Distinction Since 2435 BC 631-427-1691 (Beware the Sea People)

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                            #14
                            Originally posted by bberetta1 View Post
                            Screws. 2 1/2”-3” on the joists and 1 5/8” in the field.
                            There is no field on subfloors. Subfloors go directly over the joists. Underlayment goes over the subfloor. Construction adhesive and ring nails should be fine. The joists have already shrunk from age and should hold nails no problem. Screwing it down wouldn't hurt. I'd use Spax or GRK screws. Drywall screws have a tendency for the heads to snap off at the wrong time. When that happens you've created a gap between the joist and subfloor that's a bitch to pull tight.
                            Last edited by Sig; 03-26-2020, 04:39 AM.
                            NRA Life member

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                              #15
                              From my limited experience, I would lean toward screws. I had ring shank nails begin poking through sheet vinyl floor, when I used them to hold down the luan underlayment(no adhesive). However, it did last for 12 -15 years before this started to happen.

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