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How to fix new Chipboard on top of existing Chipboard

Discussion in 'Wood / Woodwork / Carpentry' started by curtly, 18 Feb 2020.

  1. curtly

    curtly

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    Hi,

    After a new extension we now have a lounge floor 18mm lower than the kitchen extension so i'd like to re-floor the lounge with new Chipboard on top of the existing Chipboard to make it level. Question is, which is the preferred method of securing the boards, would it be screws, wood-glue or both ???
    Any advice would be greatly appreciated

    C
     
  2. foxhole

    foxhole

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    Needs glue as well as screws, especially if you miss the joists ( chipboards poor at holding screws.)
    Make sure original is secure first .
     
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  4. Alec_t

    Alec_t

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    If you're ever going to need access below the floor, glue is going to make life difficult. Providing the existing floor is already secure, I'd use just screws.
     
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  5. JobAndKnock

    JobAndKnock

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    As Foxhole says i'd make sure that your existing floor was adequately fixed down first (especially if some pricework cowboy has nailed it into place) then glue (D4 PVA) and screw the new flooring down at something like 200 mm centres with either chipboard screws (deep, full length threads) or FloorTite screws. I'd rather have to take a circular saw to a floor to gain access even if that means wrecking a blade (something that I've rarely had to do in my own houses or those of customers) than I would want to endure a creaking or squeaky floor because it wasn't adequately fixed down.
     
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  7. curtly

    curtly

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    Cheers guys, advice taken on board
     
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