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repair crack in quartz countertop

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  • Mar 14th, 2013 11:58 pm
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Sr. Member
Nov 27, 2004
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repair crack in quartz countertop

hi - i was wondering if anyone had any repair tips for a 1.5inch hairline crack in my quartz countertop. i noticed it tonight stretching diagonally from one of the corners of the sink. its not very deep and barely noticeable when i rub my finger nail on it. but i can see it. pretty frustrating since its only been less than 4 years since installation. i asked the builder of the condo for the supplier/contractor but i'm guessing that will lead no where for warranty purposes.

so any tips on how i can seal this crack and preven it from getting any deeper/longer would be helpful! thanks
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May 10, 2005
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liquid_paper wrote:
Mar 13th, 2013 11:55 pm
hi - i was wondering if anyone had any repair tips for a 1.5inch hairline crack in my quartz countertop. i noticed it tonight stretching diagonally from one of the corners of the sink. its not very deep and barely noticeable when i rub my finger nail on it. but i can see it. pretty frustrating since its only been less than 4 years since installation. i asked the builder of the condo for the supplier/contractor but i'm guessing that will lead no where for warranty purposes.

so any tips on how i can seal this crack and preven it from getting any deeper/longer would be helpful! thanks
I am not certain that this can be repaired let alone prevent it from getting bigger. For sure, it is not a do it yourself task. You need to call a counter top specialist to have a look at it.
The crack may be because it is unsupported in that location or, it could be that there is too much stress and it needs to be releived or perhaps something completely inoccuous.
My guess is that the crack will get longer and bigger in time. I would not wait to have it checked and repaired if possible. Just filling the crack with epoxy would not work in my opinion as epoxy does not have much shear strength.
It’s not how far you fall that counts. It’s how high you bounce that counts! General G Patton
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Oct 22, 2007
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I tend to agree with Pete, first you have to determine why it cracked and deal with that first before you repair or replace. If you don't then it may happen again. From a warranty perspective, if the countertop company and the cabinet company were two different subcontractors then the countertop company can say, the base wasn't installed properly therefore warranty if void.

Either way, I agree that this is not a diy project that you can handle and most likely the crack will grow over time.
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Feb 16, 2013
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The is something called magic quartz healing formula aka colored caulking.
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3foxes wrote:
Mar 14th, 2013 1:11 pm
The is something called magic quartz healing formula aka colored caulking.
"magic quartz healing formula"?
Coloured caulk on quartz? I think, at the very best, that it would only hide the crack if you can match the colour but there is no strength to it at all.
When joining 2 pieces of quarts (or stone) epoxy is normally used.
It’s not how far you fall that counts. It’s how high you bounce that counts! General G Patton
[OP]
Sr. Member
Nov 27, 2004
975 posts
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anyone have any recommendations of reasonably priced counter experts? at this point i might just fill it with some epoxy or glue and if it continues to spread just replace the entire thing. a neighbour of mine just had her counter redone in quartz for $50/sqft which sounds extremely reasonable to me. my countertop is about 5.5ft/2ft so approximately $600 to replace.

the crack isn't noticeable yet. but what would i be looking at for repair costs and is the counter strength already compromised?
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3foxes wrote:
Mar 14th, 2013 1:11 pm
The is something called magic quartz healing formula aka colored caulking.
I agree once again with Pete, this is not a repair, it's a temporary cosmetic band aid and will not even stop the crack from increasing. I don't believe liquid paper was looking for a lipstick repair. .
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liquid_paper wrote:
Mar 14th, 2013 5:46 pm
anyone have any recommendations of reasonably priced counter experts? at this point i might just fill it with some epoxy or glue and if it continues to spread just replace the entire thing. a neighbour of mine just had her counter redone in quartz for $50/sqft which sounds extremely reasonable to me. my countertop is about 5.5ft/2ft so approximately $600 to replace.
the crack isn't noticeable yet. but what would i be looking at for repair costs and is the counter strength already compromised?
I personally would not put on any epoxy or try to fix it. I would get a counter top shop to look at it first. whatever you do may prevent them from making real or permanent repairs.
Cost? I guess it really depends on what can be done. For sure it will cost you a certain amount just to have the guy come around and look at it. Call around to several shops in your area and ask.
It’s not how far you fall that counts. It’s how high you bounce that counts! General G Patton
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Mar 21, 2002
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Why is the crack there in the first place? The fact that it's coming from a corner of the sink implies that the sink may in some way have caused it. I'd spend time looking into that and not so much effort on trying to repair it since you have indicated that it's a very fine surface crack at the moment and not very visible. Stopping the problem from growing would seem to be more important at the moment..
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