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  1. #1
    A.D. Miller's Avatar
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    Default Ain't that a Hole in the Floor

    So I'm replacing the nasty carpet that the builder installed in my house 22 years ago with tile. Today they removed the carpet and found a crack in the floor. Upon closer investigation the crack proved to be a large void in the slab - about 4 s.f. What I plan to do, if someone from this forum does not convince me otherwise in the next 30 minutes, is to have them fill the void with Sakrete 5000, thinset 1/2" Hardibacker over the top, point our toes and continue with the tiling. What say ye?

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  2. #2
    Join Date
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    Snowbird (this means I'm retired and migrate between locations), FL/MI
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    Default Re: Ain't that a Hole in the Floor

    Too lazy to look it up and in a de-cafienated haze, is 5000 Sakrete one of those fiber-enchanced reinforcing mixes?

    No mention of a bonding agent, subbase or VP, or radon issues, dare I assume?

    There are some membrane products that might do better for you (the ditra people make one) installed before backer.

    And I gotta ask, what was holding/keeping ya'll up outta the hole/void? kevlar carpet backing and big feet??


  3. #3
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: Ain't that a Hole in the Floor

    Quote Originally Posted by H.G. Watson, Sr. View Post
    Too lazy to look it up and in a de-cafienated haze, is 5000 Sakrete one of those fiber-enchanced reinforcing mixes?

    No mention of a bonding agent, subbase or VP, or radon issues, dare I assume?

    And I gotta ask, what was holding/keeping ya'll up outta the hole/void? kevlar carpet backing and big feet??
    HG: 5000 is a fiber-enhanced product that is often used without remesh or rebar. Bonding to the old slab, even with an agent will likely not work over time anyway, so I think I'll save the money for Cabernet. No real radon issues here. At 242 lbs. sans cladding, I too am surprised that my big ass did not discover this void sooner.


  4. #4
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    Default Re: Ain't that a Hole in the Floor

    Aaron,

    Had someone maybe jackhammered out an opening in the slab before to repair a water leak or something.

    Got a picture?

    rick


  5. #5
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    Default Re: Ain't that a Hole in the Floor

    How wide is this gap and where is it? Does it run the entire distance from one side to the other? Could it be two-part pour and missing/fallen/erroded exp joint (not a mono slab)? Is it level from one side of the "void" to the other?

    Any other signs of movement in the attic? walls? etc.? I don't recall how large Miller Castle might be or percisely where in TX, (do recall a Koi pond and some geo coordinates at one time but never checked... or is it in spain ? wouldn't be the first slab foundation in TX to need some slab pinning or piering though esp. if in clay area that needs foundation perimeter kept moist.

    Honestly, I wouldn't sakrete it up without having it checked out first by an SE, then again I haven't seen it, not even a pic.

    IIRC ditra membrane set on a fast setting latex-portland cement mortar to concrete; tile above, no BB.


  6. #6
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    Default Re: Ain't that a Hole in the Floor

    Aww dang, I just realized it took me too long to type out that last prior response, and the 30-minute period for discussion/debate/convincing argument had expired.

    So, I guess, you've already made a decision, and .... nevermind.


  7. #7
    A.D. Miller's Avatar
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    Default Re: Ain't that a Hole in the Floor

    Quote Originally Posted by H.G. Watson, Sr. View Post
    Aww dang, I just realized it took me too long to type out that last prior response, and the 30-minute period for discussion/debate/convincing argument had expired.

    So, I guess, you've already made a decision, and .... nevermind.
    HG: Go ahead, they're not back from Home Depot yet.


  8. #8
    Nolan Kienitz's Avatar
    Nolan Kienitz Guest

    Default Re: Ain't that a Hole in the Floor

    Aaron,

    Are you sure it is not a "black hole portal" ???

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  9. #9
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: Ain't that a Hole in the Floor

    Quote Originally Posted by Nolan Kienitz View Post
    Aaron,

    Are you sure it is not a "black hole portal" ???
    NK: If it is, I feel sorry for the last one to pass out through it because it is concreted shut forever . . . live long and prosper . . .


  10. #10

    Default Re: Ain't that a Hole in the Floor

    Always use Epoxy for concrete cracks, it is the best if ever it cracks again it will be somewhere else.




    Rolland Pruner

    Livermore, Ca


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