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Thread: Kerdi board

  1. #1
    DIY Junior Member kcchiu's Avatar
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    Default Kerdi board

    Greeting,

    Does anyone know where to buy Kerdi Board ?

    Thank you
    KC

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    Default

    This is relatively new product (the preapplied Kerdi, not the membrane itself). The best thing would be to call Schluter directly and ask.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3

    Default

    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.
    John Bridge, Ceramic Tile Setter :-)

    http://johnbridge.com/vbulletin/index.php

  4. #4
    Retired Defense Industry Engineer jadnashua's Avatar
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    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.
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    Last edited by jadnashua; 06-27-2010 at 12:40 PM.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  5. #5
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Q: What is the Best way to Waterproof a Kerdi Board Niche - A: Use Ardex 8+9

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  6. #6
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Kerdi Board - Water testing

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  7. #7
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Does Kerdi wick water? Does Kerdi Board

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  8. #8
    Retired Defense Industry Engineer jadnashua's Avatar
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    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/me...D-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 by jadnashua; 07-25-2010 at 02:10 PM. Reason: added link and other research info.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  9. #9
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Vancouver, BC - Kerdi Board Testing

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  10. #10
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Kerdi Board testing in Vancouver

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  11. #11
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  12. #12
    Retired Defense Industry Engineer jadnashua's Avatar
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    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.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  13. #13
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Kerdi Board under Nu Heat wires ???

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  14. #14
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Answers from Schluter USA - can Kerdi Board be used on floors? With heating?

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  15. #15
    DIY Junior Member pavels's Avatar
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    Default An Online Source

    For those of you who are still interested in a good source for Kerdi Board, e-comfortusa.com has just begun offering it for sale online. As full disclosure, I do work there. You can check it out here: http://www.e-comfortusa.com/index.ph...&filter_id=630

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