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Plywood thickness?

Hi

Just need some advice.

What thickness of plywood should be used before tiling a kitchen floor (wooden floorboards)?

Thanks

Comments

  • cyclonebri1
    cyclonebri1 Posts: 12,827 Forumite
    I'd use 10mm min if applying over existing T&G or chipboard. I'd also bond it before screwing, not nailing;);)
    I like the thanks button, but ,please, an I agree button.

    Will the grammar and spelling police respect I do make grammatical errors, and have carp spelling, no need to remind me.;)

    Always expect the unexpected:eek:and then you won't be dissapointed
  • nrishiraj
    nrishiraj Posts: 237 Forumite
    Part of the Furniture 100 Posts Combo Breaker
    I'd use 10mm min if applying over existing T&G or chipboard. I'd also bond it before screwing, not nailing;);)

    What is T&G?
  • Ruski
    Ruski Posts: 1,628 Forumite
    Tongue and Groove - i.e. floorboards

    12mm ply minimum - but as thick as you can get away with.

    HTH

    Russ
    Perfection takes time: don't expect miracles in a day :D
  • nrishiraj
    nrishiraj Posts: 237 Forumite
    Part of the Furniture 100 Posts Combo Breaker
    Ruski wrote: »
    Tongue and Groove - i.e. floorboards

    12mm ply minimum - but as thick as you can get away with.

    HTH

    Russ

    Thanks, I already bought 9mm thickness yesterday. :)
  • lee111s
    lee111s Posts: 2,987 Forumite
    Eighth Anniversary 1,000 Posts Combo Breaker
    Speak to your tiler, you may need a flexible self levelling compound otherwise you may find that the grout and or tiles may crack if there's any movement/spring in the flooring.
  • Doozergirl
    Doozergirl Posts: 34,082 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    Hardiebacker board is much better. It has more strength than ply - you need 12mm ply to guarantee no movement (which is the purpose of putting it down in the first place) but the resulting floor is much higher than those around it. 6mm hardiebacker board does the job perfectly.
    Everything that is supposed to be in heaven is already here on earth.
  • DirectDebacle
    DirectDebacle Posts: 2,045 Forumite
    Agree with Doozer. 12mm ply absolute minimum. 16mm+ is recommended by most adhesive manf. Backerboard is the way to go and avoids high threshold steps.
  • Astuteboy
    Astuteboy Posts: 82 Forumite
    Part of the Furniture 10 Posts
    Used http://www.nomoreply.net/ on my kitchen floor about 3 years ago as wanted to avoid the thickness of ply; was easy to cut and fix and no problems at all since. Bought all the boards and bits on ebay.
  • MX5huggy
    MX5huggy Posts: 7,173 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    I would have the floor boards up then put done 25mm ply, if levels are a problem.
  • cyclonebri1
    cyclonebri1 Posts: 12,827 Forumite
    I'm going to go against the grain and say, as I did earlier, that if bonded 9/10mm will be fine. 18mm plus adhesive plus 10mm plus screws does not shift, provided the joists are adequate in the 1st place. If they are springy then NO top dressing will effect a fix.

    Absolutely agree that tilebacker or similar is far better, but as the OP didn't ask that:A:A:A:A:A:A:D:D:D
    I like the thanks button, but ,please, an I agree button.

    Will the grammar and spelling police respect I do make grammatical errors, and have carp spelling, no need to remind me.;)

    Always expect the unexpected:eek:and then you won't be dissapointed
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