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Discussion Forum

joist spacing on hardwood flooring

wishbone | Posted in General Discussion on February 12, 2006 08:39am

I am about to start laying some 3/4 cherry hardwood and when I pulled up the old carpet I discovered 2by 12s on 24 centers. Do I need to overlay the 3/4 with another layer of plywood? Is this overkill? Any advise? This is not an engineered wood.            

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  1. Piffin | Feb 12, 2006 04:02pm | #1

    Do U plan to run the cherry perp3endicular to the joists? If so, and your oprder is not full of shorts, you are fine.

     

     

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      Sphere | Feb 12, 2006 04:12pm | #3

      Home in time for the blizzard?

      Spheramid Enterprises Architectural Woodworks

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      1. Piffin | Feb 12, 2006 08:57pm | #8

        No snow yet when I posted that. Four inches right now! 

         

        Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

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          Sphere | Feb 12, 2006 09:08pm | #9

          "Four inches right now!"

          That was our max, before it scurried up your way. good luck, it sounds as if you all might get 3x what you have.

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            DDay | Feb 13, 2006 04:33am | #15

            I wish you were right.  I'm outside Boston and I think we got about 16 or 17 inches.  It was in the low 20's though, so the snow is the very light fluffy kind.  Hopefully we get some rain and pack it all down.  Late in the week they "say" it will be in the mid 40's, we'll see.

            I think Piffen might have dodged the bulk of the storm since he's up north much further, the storm stayed off the Cape coast.  But since the winds come from the north east and he's on the water, he might have gotten buried.  Pretty good storm, I don't miss my days running a Case loader plowing.

             

          2. Piffin | Feb 13, 2006 05:49am | #16

            Looks like maybe 8" and quit now. Some of these roll up just off coast and the backside retiurns onto us harder on the outgoing than on the way thru tho 

             

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        2. HeavyDuty | Feb 12, 2006 10:06pm | #13

          My son told me yesterday that on Friday they had a severe snow-storm warning,

          3-4 cm., but they ended up with just rain.

          He's in Nashville. :o)

          I heard you guys are going to get more than a foot. 3000 flights cancelled already.

          1. Piffin | Feb 12, 2006 10:16pm | #14

            We flew in thinking we were only minutes ahead of it, blazed up the cost in the vehicle to just catch the ferry in time, and still woke up to a clear driveway.
            I gotta go plow soon now though. 

             

            Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

    2. wishbone | Feb 12, 2006 08:31pm | #6

      The bundles are from 1 ft. to 7ft. and the plywood we are going to screw down even if we don't overlay it. Thanks.

      1. User avater
        Huck | Feb 12, 2006 08:35pm | #7

        I think the main question is, is there any noticeable deflection?  If so, then I would consider beefing it up with another layer of plywood.  The second question is, what would a second layer of plywood do to the floor heights at thresholds and transition areas?"he...never charged nothing for his preaching, and it was worth it, too" - Mark Twain

        1. wishbone | Feb 12, 2006 09:14pm | #11

          I was considering 3/8 ply. As far as deflection? I'm not sure. Only 2 changes,one is top step, the other is pocket door height. I can cut that off. thanks.

  2. sawzall | Feb 12, 2006 04:11pm | #2

    That must have been some stiff carpet.

    1. wishbone | Feb 12, 2006 08:24pm | #4

      Yea, after three teenagers and their friends, the carpet was pretty stiff.

    2. User avater
      Huck | Feb 12, 2006 08:26pm | #5

      I read it the same way - carpet stretched directly over 2x12's.  What is the span rating for that carpet?"he...never charged nothing for his preaching, and it was worth it, too" - Mark Twain

      1. davidmeiland | Feb 12, 2006 09:12pm | #10

        You guys need to get over your skepticism. Carpet is an engineered product and is rated by the APA for use as structural sheathing. The project I'm doing now is 3 stories with 1/2" carpet sheathing over the entire structure, with 1-1/8" tongue and groove carpet subfloor throughout. We love the stuff, it comes in huge rolls.

        1. Piffin | Feb 12, 2006 09:29pm | #12

          I prefer 1/2" T&C ( tongue and cheek) base myself, overlaid with a good wool piled up on top of it 

           

          Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

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