Kerdi board

Discussion in 'Remodel Forum & Blog' started by kcchiu, Jun 26, 2010.

  1. kcchiu

    kcchiu New Member

    Messages:
    2
    Location:
    NJ
    Greeting,

    Does anyone know where to buy Kerdi Board ?

    Thank you
    KC
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,809
    Location:
    New England
    This is relatively new product (the preapplied Kerdi, not the membrane itself). The best thing would be to call Schluter directly and ask.
  3. John Bridge

    John Bridge Mudmeister

    Messages:
    49
    Location:
    Houston, Texas
    Kerdi-board is now available in most major population areas at tile distributors and dealers. You won't find it at Home Depot or Lowes. :)
  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,809
    Location:
    New England
    I had heard of the stuff (I've used Kerdi before, but the Kerdiboard is new) and did some investigation. It's a structural extruded foam panel with Kerdi applied on both sides (well, it is not exactly like the sheet goods - fleece, reinforced waterproof sheet, foam, with the same on the other side; Kerdi has fleece on both sides of the sheet). One side has a grid on it at 3/8" squares to help you cut it in a straight line. It comes in sheets in various thicknesses from 3/16" up to 2" thick and in various widths and lengths up to 96" long. You can use it in place of CBU on the walls, or as in structural panels for things like a vanity, tub deck, shower seat, etc. that you will be tiling. They also have preformed corner boxes and U-shaped ones for things like pipe covers or chases. There's even a sheet that is designed to bend to make curves. The 2" stuff is sturdy enough to make a tub deck out of and they have various trim pieces for the edges in SS if you want, or other finishes , or you can tile it. Neat stuff. You can cut it with a sharp utility knife (although the 2" stuff might be tougher!). Check out www.schluter.com for more info.

    Attached Files:

    Last edited: Jun 27, 2010
  5. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

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    Location:
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    Q: What is the Best way to Waterproof a Kerdi Board Niche - A: Use Ardex 8+9

    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  6. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

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    Kerdi Board - Water testing

    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  7. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

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    Does Kerdi wick water? Does Kerdi Board

    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  8. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,809
    Location:
    New England
    It appears the the recommended joint has you using Kerdi-band on the seam. If the goal is to avoid that, then Kerdi-fix should work. My guess is that when cutting, you may debond the edge slightly, and getting a good Kerdi-fix joint may not be as easy as you might think. If using Kerdi-band, I can't see it ever being a problem. Now, adding the Kerdi-fix to an unsupported joint would structurally improve the joint by bonding the two sheet edges together better rather than just gluing on (via the thinset) a band at the top layer where flex at the joint might debond the Kerdi sheet from the foam core. This normally wouldn't be a problem once the tile was up, unless the grout joint happened to align with the board seam.

    The cut-sheet with installation and other info for Kerdi-board is linked here: http://www.schluterkerdiboard.com/media/KERDI-BOARD-Cutsheet.pdf

    The only time they call for Kerdi-Fix is when the joining point or edge won't accept thinset to make a seal (such as to a tub edge or say a windowsill). Otherwise, you butt the edges together, then cover with Kerdi-band, as you would for using the membrane. As long as you get at least a 2" overlap of the Kerdi materials, the seam will be waterproof. WHen using the panels on studs, say in a shower wall, you need to waterproof the fasteners - Kerdi-band is the recommended method. You need fasteners into studs at a maximum of 12" intervals and either 1/2" panels on 16-studwalls, or 3/4" on larger (up to 24") studwalls. Pipe penetrations could either be made with their special Kerdi pieces, or Kerdi-fix. The pre-made corners could be used there, or you can make your own, as you used to do before they made the corners.
    Last edited: Jul 25, 2010
  9. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

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    Location:
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    Vancouver, BC - Kerdi Board Testing

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    Last edited: Mar 15, 2014
  10. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

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    Location:
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    Kerdi Board testing in Vancouver

    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  11. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

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    Location:
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    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  12. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,809
    Location:
    New England
    I thought I remembered the instruction manual saying 1/2" minimum panels on a bare studwall. The thinner sheets are designed as a skin for existing flat panels. If the seams are covered with Kerdi material or Kerdifix, the fact that the foam absorbs water is immaterial, since none should ever get there. Same idea as their preformed pan or curb...cover it properly with Kerdi, and it's stable and waterproof. I'm surprised they didn't call you back. Maybe they tried, but no one was home at the time.
  13. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

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    Location:
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    Kerdi Board under Nu Heat wires ???

    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  14. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

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    Location:
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    Answers from Schluter USA - can Kerdi Board be used on floors? With heating?

    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  15. pavels

    pavels New Member

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    1
    Location:
    Chicago
  16. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

    Messages:
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    Location:
    North Vancouver, BC
    Kerdi Board. Kerdi. Kerdi DS

    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  17. LLigetfa

    LLigetfa DIYer, not in the trades

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    3,827
    Location:
    NW Ontario, Canada
    The pictures sure look odd. It looks like there is some sort of paper product and I'm seeing what looks like drywall compound. Do you think there was Kerdi Board there?
  18. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

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    Location:
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    There is not Kerdi on Kerdi Board

    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  19. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

    Messages:
    3,798
    Location:
    North Vancouver, BC
    They use a paper like product to make Kerdi Board

    Posts removed by John Whipple
    Last edited: Mar 15, 2014
  20. dlarrivee

    dlarrivee New Member

    Messages:
    1,172
    Location:
    Canada
    For anyone trying to keep up, John (W), doesn't like Kerdi.

    He likes some random backerboard (friends with owner/distributor?) called Greeney Board, he like Hilti, and he hates Jim.
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