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newbie trying to improving slatted bed support

Discussion in 'Wood / Woodwork / Carpentry' started by xyz321, 12 Jun 2013.

  1. xyz321

    xyz321

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    hi
    our king size bed has horizontal wooden slats which are spaced quite a bit of distance apart. there is no support in middle.

    our mattress has pocket springs and due to the gap between slats the spring slightly "fall down" the gap and so the mattress doesnt give enough support.

    so i was thinking of improving this. options are

    1- add 3/4 more slats to reduce distance between slats
    2- add middle supports
    3- add a wooden sheet spanning full bed on top of the existing slats.
    4- mixture of 1 and 2 above

    questions are

    1- do i need to pre drill any of the woods or do i just drive the screw in?
    2- any of the above or any other recommendations?
    3- if i add middle supports do i need a slat to run length ways to connect all slats togather rather than just adding legs to the bottom!
    4- if i add a length ways slat then does it go above existing slats or below?
    5- if i add a wooden sheet then what thickness and material?

    thanks a lot
     
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  3. foxhole

    foxhole

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    Depends on dimension of slats if they bow then best to replace, if it's just a lack of support additional slats would help [did this to my bed and fixed problem]. A single sheet over the slats would work except at king size you are unlikely to find a single sheet to cover it.Two could be used but would work best running across the bed not head to toe.Thin sheet ply would suffice as weight is evenly spread by mattress.
     
  4. xyz321

    xyz321

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    did you just add horizontal slats or added supports in middle as well?
     
  5. foxhole

    foxhole

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    Just more slats, if they are thick enough [at least 35mm] they should not need support.
     
  6. Diyisfun

    Diyisfun

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    Forget the slats, lay a piece of ply/blockboard on top. The mattress needs full support, will make for a former bed, stop squeaks
     
  7. xyz321

    xyz321

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    any idea of minimum thickness of the ply/blockboard? ta
     
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  9. Diyisfun

    Diyisfun

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    18/25mm, will last a life time. Blockboard will be stronger.
     
  10. Porque223

    Porque223

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    If the slats themselves sag, putting a vertical strip under most of the length of each will greatly reinforce them, such that the cross section of the composite looks like a T.
     
  11. xyz321

    xyz321

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    sorry but just to confirm that did you mean just a vertical strip or a vertical strip with additonal supports to floor!
     
  12. Porque223

    Porque223

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    You make the horizontal strips into T cross sections with vertical members that go almost the whole span. No floor contact. Two or three screws per slat should do it.

    It has to do with the strength of material in the shape of a slat.
    Doubling the width of a horizontal slat doubles the strength
    but
    if you stand it on edge, doubling the height triples the strength.
    The composite becomes like the top half of an I beam.

    Try it.
    Support a slat at both ends, load it with a concentrated or distributed load and note the deflection. Then reinforce it as described and repeat.
     
  13. big-all

    big-all

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    when i make double beds the slats are 4x1"planed [21x96mm] with a 2-3" gap

    first slat at each end attached to the end
    if there are boxes underneath theres a bit off 2x1 full length flat to support the middle

    if they have legs there is 2 bits off 2x1" central 44mm apart full length supporting all slats together with a 2x2" leg at 1/3 and 2/3 screwed between the batons
     
  14. Porque223

    Porque223

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    When I has this problem with an IKEA bed I got the strongest, hardest & stiffest wood from the lumberyard and cut a few extra strips.
    I didn't bother attaching them to the two cloth strips that held the other slats together.
     
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