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Fixing floor bounce

Discussion in 'The DIY Room' started by ironpony, Feb 2, 2018.

  1. ironpony

    ironpony

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    This is a house I recently bought at an auction, 1250 sq ft ranch built in 1960. Original owner had to go into nursing home so the kids decided to sell it as is rather than update it. So the house is 28x44, the floor was framed with 2 x 8's 16" on center with a 14 ft span. The floor had some bounce and the original owner just added columns in the basement to reduce it. Needless to say a row of columns down the center splits it to 7 foot, hardly useable. I removed all the columns and checked the joists with a string and amazingly they were very straight. My solution to fix the bounce was to "sister" a 2x8x14 southern yellow pine to every other floor joist. SYP is a very stiff wood which has become very popular for floor joist because of the stiffness. Now you would never try to span 14 foot with a 2x8 but that is the size I had to work with.


    Again to my benefit when the house was built there was almost nothing ran in the joist cavity

    IMG_0951.JPG

    then I removed the strapping to get access, I was able to slide the piece in and pull it back on top of the other wall, remember to install with the crown up

    IMG_0953.JPG

    Had to use the Big hammer to rotate them into place and seat them together

    IMG_0954.JPG

    then I fastened them together with 3" deck screws

    IMG_0955.JPG

    A little trick to line things up is drive a screw into the adjacent board, then use you hammer to align the board edges as you drive the screw to join them.

    IMG_0956.JPG

    had one that would not go back into the pocket so I screwed a block onto the edge of the joist and then used the Big hammer again to move it back

    IMG_0958.JPG

    hopefully this will help some one in the future with future home improvement. Installed all 14 this morning in about 4 hours, went very smooth.
     
    Chaz, milleo, 343amc and 5 others like this.
  2. Canadian border VT

    Canadian border VT

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    Great job ironpony, I have not seen SYP up here. I have only done this twice, and both times I had to move electrical and heating lines and excetera excetera. Always took me more days and it took you hours:yes:
     
    papadave likes this.
  3. ironpony

    ironpony

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    SYP is great stuff, the only problem I have is sometimes for what I am doing I rather have SPF, around here everything bigger than 2x6 is SYP.