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Decking joist screw hole repair

Discussion in 'Wood / Woodwork / Carpentry' started by Luke1988, 14 Sep 2020.

  1. Luke1988

    Luke1988

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    Hi,

    I’ve got a joist which has taken too many screw holes now.

    Whats the best way to fill them without taking the board off?

    Or is it a case of replace the part of the joist?
     
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  3. big-all

    big-all

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    are we talking cosmetic or structural ??
     
  4. Luke1988

    Luke1988

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    I need to re screw the decking fastener
     
  5. big-all

    big-all

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    several choices
    longer screws
    bigger screws
    knock through wood
    are these proper decking screws that have been used
    how deep are the joists
    how old is the decking ??
    can you get the screws out they may have just snapped so feel loose
     
  6. JohnD

    JohnD

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    I don't know what that is. A steel bracket?

    some photos would help visualise it

    Although you can drill out the holes and plug with hardwood dowel, I would probably drill through and use a stainless bolt or stud with flange nuts. Then you are not relying on the screw thread gripping in your second-hand hole. Stainless fixings are not expensive now, in small numbers. I do this on fence and decking now.

    You could also sister the joist and fix to the new piece.
     
  7. Luke1988

    Luke1988

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    It’s using decking fasteners

    The T shape ones with the screw through, it’s the same on that keeps coming loose.

    Decking is a few months old, I’ve re screwed it 4 times now so no holes on the joist left.

    Tried wood filler etc but can’t get it deep enough into the whole.
    Tried a dowel but with all the other holes it keeps slipping.

    It has screwed back in but it’s not fully locked right if that makes sense.

    I can still turn the screw

    Was going to try sawdust and glue next?
     
  8. Luke1988

    Luke1988

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  9. JohnD

    JohnD

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    filler is waste of time

    use bigger screws

    If no luck, sister to the joist and fix to that

    photos of your holy joist would help.
     
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  11. big-all

    big-all

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    how deep are the joists
    do you have a link to the system used iff its a non wood system ??
     
  12. Luke1988

    Luke1988

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    Joists are about 25-30 mm from the top of the board.
     
  13. Luke1988

    Luke1988

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    The fastener screws are a one size fits all. There just the right size to fit on the fastener
     
  14. JohnD

    JohnD

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    buy longer ones.

    Stainless.
     
  15. big-all

    big-all

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  16. big-all

    big-all

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    as an aside what have you used to drive them in??
    its possible using an impact is the wrong tool as it can strip the grip off the thread
     
  17. Luke1988

    Luke1988

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    Drill on screw drive mode

    And been hand screwing the loose one after trying filler today.
     
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