Granite crack

[Aimbus]

I have an island that Is fairly large with Calcutta 3cm thick with a laminated edge. It was installed about a week ago.
The granite had been covered the entire time after install - when I took the cover off I noticed a crack in the top running diagonal all the way across it. Any suggestions on how it could of cracked?

[Brian Briggs]

The cabinets were probably not set level / in plane. If there is a high point in the cabinets in the center, and the stone was set, the high point could cause the stone to crack

[Aimbus]

If someone stood on top of the island would that of cracked it.

[Dave.Scott]

Someone standing on the top if the cabinets were not set on plane could have cracked the top.
On a separate note, what glue did you use for the lamination and how wide were the lam strips (assuming that it was a stack lamination, not a miter)?

[dustinbraudway]

And it's not granite



It would have to be a hell of a high pivot point for someone to have stood on it and cause a crack.where is the crack located? Can you post a pic ?

[Aimbus]

Picture of cracked top- it's actually cracked in 2 places - the first one is on the laminate edge part in the center- the other one is on the side and the crack runs up the middle

[Dan R.]

is there glue in the edge crack? It is hard to tell from the pic.

Where is the edge crack in relation to the long straight line crack?

Where is each located on the island?

[Aimbus]

One crack is on the edge in the middle area of the island- the other is on the far left side if you are facing the island and looking out. The large crack down the middle is not connected to the crack on the middle edge area
Not sure if glue was used

[Aimbus]

Could the weight of someone standing on the island crack it?

[Demetri]

Could the weight of someone standing on the island crack it?

Someone looking at it wrong, can crack it! Yes, the weight of someone can cause it to crack in the right way, especially if the cabinets are not level.

Can you feel the crack in the middle? Hard to tell how severe it is.

[ageless]

That's a really nice island!

[Ken Lago]

Where is is the granite?

[Aimbus]

The island is in the kitchen

[Darryl Miller]

Could the weight of someone standing on the island crack it?

Yes. Was there work being done over the island after the top was installed? I have seen other trades use countertops to stand on to work overhead, stack their tools on, etc. etc. If you inspected the top before covering it then something obviously happened afterward. But without us being able to know how it is supported throughout the top of the cabinets and if the cabinets are on plane then we are just giving you our best guesses based on our previous experiences with this type of issue. 99.9% of the time when another trade damages our work, the guilty party will never confess to it. You have to catch it when it happens. Best of luck to you working through this.

[Ken Lago]

Its broken because someone have been standing on it, good news is its not a difficult repair for a seasoned stone guy. Its not granite you have, its a gorgeous marble, hope you knew that as the care taking is very different between the two.

[Jon_sambor]

Are there any subtops under the top? What's the edge thickness? Is it 2cm 2cm laminated to give an exposed edge of 4cm? My guess is that it was laminated around the perimeter and there is no support on the interior body of the island. Someone stood on it and bent the island down which caused the cracks.

[Mark Meriaux]

I've seen some white marble slabs with the long white "crack" visible in the raw material - that one could be a natural part of the slab. Is there any detectable break in the surface that you can feel? (If it's smooth, it's likely part of the slab and not an actual break). Did you view/select the materials prior to them being fabricated for your home? If the supplier has additional slabs, you could view them to see if the other slab(s) have similar features.

The edge crack appears to be a mechanical failure (it's broken or cracked), as others have stated, possibly caused by a large amount of weight on the island. Without knowing more details about the installation, it's difficult to assign blame to your stone contractor. Luckily, it can be repaired by a competent professional.

I believe that Ken was asking where (in the world) you are located?

[scott m]

several of the cracks were there prior to install it would seem....Those are the ones with the dark lines.

[Kowboy]

Could the weight of someone standing on the island crack it?

Not if it were installed properly. A properly installed stone countertop has tremendous strength in compression and very little in tension. If the top is installed on plane with the substrate/cabinets, the substrate/cabinets provides strength in tension.

The top cracks seem white and clean, which indicates a lack of contamination, which hints at the crack being recently created. I can't tell if the edge cracks are contaminated or just look that way from shadows. Were I called to this repair, I'd like to complete the break to allow plentiful adhesive application.

If you insist on the repaired or replacement top being installed with NCI's Twist Shims, you may join your electrician and plumber in a Conga line across the top; it ain't gonna break:

https://www.regentstoneproducts.com/ite ... ITWISTSHIM