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Super White Granite Seam Issue & Crack
Last Post 28 Jan 2014 06:29 AM by David Gerard. 17 Replies.
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superwhite2014
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17 Dec 2013 07:10 PM
    Hi Pros, 

    I'm a consumer that recently had some super white quartzite installed. I have two issues I'd love to get some pro advice on. 

    1 - There's a crack running the whole length of the slab from the backsplash the end of the bullnose. Not sure if this happened during installation or if it was there previously. 

    Two questions - is it an issue? should i ask for some sort of discount from the store?

    2 - There are a couple of really odd marks near the seam, which seem like they were part of the fabrication process. 

    Three questions - what are these marks? Is this poor work, or normal (I've never seen this in anyone else's home)? and can it be fixed or will filling with resin look worse. 

    Thanks in advance. 


    Andy Graves


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    17 Dec 2013 11:14 PM
    I can't see the crack in the picture.

    Are you referring to the black marks in the corner and to the left of the image?
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    Chris Yaughn
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    18 Dec 2013 02:51 AM
    More and better pictures are needed for anything close to a professional opinion.


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    superwhite2014
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    19 Dec 2013 05:02 PM
    Hi Guys, 

    Sorry for the delay in getting more photos up. Here they are. 





    Andy Graves


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    19 Dec 2013 11:28 PM
    I still don't see the crack but that mark looks man made.

    Is it a mitered edge?
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    Chris Yaughn
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    20 Dec 2013 01:16 AM
    The white cuts almost look like saw overcuts, that were filled with something that was too white and the a really bad sharpie job to try and blend it in. Those marks are not OK, and could be fixed to look a lot better. If I am looking at it right.

    I do not see the "crack" either.
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    superwhite2014
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    24 Dec 2013 04:40 AM
    Thanks guys. Very helpful.

    The crack was in a different spot and wasn't pictured. I've been told that cracks are common with this material (even if they fun the full length of the counter).
    David Gerard
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    24 Dec 2013 01:36 PM
    I'm suprized to see a sharp corner. Wouldn't rounded corners help resist cracking?
    insomnia crossed with dyslexia and atheist beliefs may lead one to lay awake all night wondering if there really is a "Dog"
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    28 Dec 2013 03:05 PM
    Fissures are prevalent in this material and should be of little concern once the tops are set in place and well supported. They tend to be more problematic to us fabricators when we are moving and handling the pieces.

    As for the dark spots, I agree with Chris......those appear to be lackluster repair attempts at filling saw marks. I would see if the fabricator can dig out and repair those with a better color match. If they are unable/unwilling, then a discount might be another option if you are prepared to live with them as-is.
    Mark Meriaux
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    Tom M
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    30 Dec 2013 12:29 PM
    We just put in our first Super White quartzite top. I had no idea they were as fragile as they are. The mesh on the back was our first tip.

    I would never have a square inside corner on that, unless that's where they put the seam. If as, that was a lame mistake with the saw.
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    09 Jan 2014 02:53 AM
    Tom,

    I believe that is a folded mitered edge on the front. A square inside corner is the best way to "fold" that edge properly. If it's 3cm thick, I would agree with you that a radius should be present in the corner.

    The ugly spots look to me as if the saw made some overcuts into the edges of that material and was subsequently filled with epoxy that was noticeably darker than the material. Those areas could be cut or ground out and filled with a better color match to improve the overall appearance.
    Mark Meriaux
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    09 Jan 2014 12:45 PM
    Thanks, Mark. That would explain the square inside corner.

    How common is that for residential countertops?
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    20 Jan 2014 01:59 PM
    It is very popular in some parts of the country. I believe that it is part of the current design trend for euro-style clean straight lines. Large metro areas are seeing it right now.......mid America, not so much.
    Mark Meriaux
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    21 Jan 2014 12:14 PM
    Are quartzites more fragile (brittle?) to begin with and is it because there is a higher volume of quartz?
    ...those who torment us for our own good will torment us without end for they do so with the approval of their own conscience.

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    24 Jan 2014 05:35 PM
    Yes and no. More fragile - it depends on the variety and if it has heavy veining (other weaker minerals) that could create a weak area. I don't have any ASTM data, but from working with it, it isn't what we would consider "scary" to work with and handle in the shop.

    Due to the higher silica/quartz content, it is much harder to cut and can be hell on tooling. We do cut it slower. Another issue common with a lot of quartzites is they are not highly acid resistant. Many of them can etch (similar to white marble) from household acids.
    Mark Meriaux
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    25 Jan 2014 03:19 PM
    I did not know that. What minerals make quartzite more prone to etching? I would think the quartz would be resistant to it.
    ...those who torment us for our own good will torment us without end for they do so with the approval of their own conscience.

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    27 Jan 2014 10:55 PM
    The quartz part is, however many of these white varieties must contain (I just guessing here) some amount of calcium that reacts with acids. When in doubt, tes the slabs prior to fabricating.
    Mark Meriaux
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    David Gerard
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    28 Jan 2014 06:29 AM
    "Tambura" or Volcanic Ash" just saying, if ya want the look of quartz and all
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