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Thread: SpiderWeb II - Review of Custom Building Products new Uncoupling Mat

  1. #16
    DIY Senior Member suceress's Avatar
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    I'd love to see how things turn out.

    Not to sound like a sycophant, but I really do think its awesome that you go to such lengths to test the products. I think it really is cool and it helps to have a better understanding of how the products work, their limitations, etc. Too bad there is no "like" button on this forum.

  2. #17
    Retired Defense Industry Engineer jadnashua's Avatar
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    The strength test is after full cure...shortchange that, and you risk failure. The industry standard is 50#/sqin for this type of material. Independent tests have shown the Schluter products to achieve at least 75#. Do it before full cure, I do not know the results.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #18
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

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  4. #19
    Retired Defense Industry Engineer jadnashua's Avatar
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    It's rated at the nominal 28-days. It's a shear measurement (parallel to the face), not a hanging measurement (perpendicular to the face), and this assumes a monolithic surface (i.e., grouted). You'd have to look up the specifics of the test. Schluter discusses it in their installation manual, and that may also list the test procedure. Need apples-apples if you want to run the test. Anything over 50#psi meets the industry code for this type of material. When Schluter had the test run, the testing agency came up with 75#psi as the fail point - 50% above the minimum.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  5. #20
    ACO Shower Drain Sales johnfrwhipple's Avatar
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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. #21
    Retired Defense Industry Engineer jadnashua's Avatar
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    No idea what kind of strength you'd have with a pull test. The vast majority of stress on tile is in shear, either from bending or if on a vertical surface, just from the weight. As noted, at least as I remember it, the 50psi industry rating is for shear, not pull. I'm not sure I've seen a pull test requirement.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  7. #22
    ACO Shower Drain Sales johnfrwhipple's Avatar
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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. #23
    Retired Defense Industry Engineer jadnashua's Avatar
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    On a wall would be more in line with my understanding of the test procedure.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  9. #24
    ACO Shower Drain Sales johnfrwhipple's Avatar
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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. #25
    Retired Defense Industry Engineer jadnashua's Avatar
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    I think the grout simulates a full wall install better, since it ties the stuff together. Makes it harder for the membrane to shear off, since it's sharing the load across a larger area. But, I have not read the details of the actual test procedure, so may be misinterpreting it.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  11. #26
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default SpiderWeb 2 vs Ditra & Noble Seal TS (Head to Head Challenge)

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  12. #27
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    Default Installing Ditra with Ardex AF207

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  13. #28
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    Default Thin-set used in testing

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  14. #29
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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. #30
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    Default Spider Web 2 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.

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