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Question DetailsAsked on 6/18/2014

What is the difference between a crack in a granite countertop and a fissure in the countertop?

Surface disruption traverses from one edge across to the the other side of the island, I can find nothing similar to it on any of the rest of my counters. It is not even present in areas that were continuous with this area in the original slab. It doesn’t pass between, or interface, varying compositions within the stone, but instead cuts through the compositions as it travels its route. I can see in other locations that I do have fissures in my stone, but they are smooth on the surface. Fingernail catches on it. Also, results in two reflecting planes in the surrounding polished surfaces on either side of it. Difference in height between the surfaces on either side of the break is even greater than that of my one installation seam. The interference within the surface polishing leads me to believe this disruption occurred after the surface was polished. Installer says because it holds his 240 lb weight it is not a crack. Wants to fill it. Says
nothing to worry about. Is Bianco Antico.

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A fissure is a natural crack in the stone - which any reputable vendor would not include in the countertop unless it had been rehealed by nature, say with quartz vein injection in a granite, for instance. However, some shady ones glue natural cracks ("joints") back together and sell it anyway - as do some contractors and installers if the stone is broken in handling or shipping.


As you astutely caught - a natural break that was rehealed (or even glued) would polish smooth, so it there is a vertical offset but it is not debonded then it was broken in processing or shipping or handling or installation and glued back together after it left the factory - and of course if an open break (water goes down into it) then was not glued or broke in installation, or afterwards because the installation/support was not proper.


The thing of his weight on it means nothing. If new installation then should be replaced. If post-installation break and not in warranty then can be "seamed" - with adhesive, not just "filled" - and this means breakingit free and gapping to the correct rerpair gap, fixing the shims so the countertop is totally level and properly supported, "gluing" it, filling the surface for color match, then regrinding/polishing the joint area smooth.


Pity it did not crack through somewhere else or at that joint when he put his weight on it - that wouldhave made it so much simpler.

Answered 5 years ago by LCD




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