Are cracks in granite normal?

Author: Arthur Gottlieb  |  Last update: Monday, May 19, 2025

Granite is a naturally occurring material and its molecular composition is inclined to expand and contract with temperature fluctuations. Years of repeated thermal cycling can result in fatigue and eventual cracking of granite countertops.

Can granite crack with ordinary use?

Granite is a rock cut in a big slab 1 1/4 thick out of of the side of a mountain or quarry. It will have hairline cracks and fissures throughout it. If enough weight isn't evenly supported such as too far a extension on a island it can crack. It can crack during transportation.

What are acceptable imperfections in granite?

Natural Fissures

The fissure is not a defect; it is an essential part of the stone as it occurs naturally. They look like colorful small lines. On the other hand, cracks are not good for the stone. It can be a thin hairline crack that may expand further. You can feel crack with your hand.

Is it normal to have seams in granite countertops?

There is nothing wrong with that seam. If you thought seams would be invisible then you chose the wrong countertops. Also are you sure that is granite?

Are fissures common in granite?

All granites contain some degree of fissure. Some contain more than others. Because fissures are a natural occurrence in all granites, we do not replace countertops due to fissures. Pitting of the countertop surface, particularly in granite, is a common characteristic of natural stone.

How to repair fine cracks in granite/marble, 如何修补大理石上的细缝

Is it normal for granite to crack?

Granite is a naturally occurring material and its molecular composition is inclined to expand and contract with temperature fluctuations. Years of repeated thermal cycling can result in fatigue and eventual cracking of granite countertops.

What's the difference between a fissure and a crack?

Fissures are a result of naturally occurring phenomenon, such as geological and environmental forces, crystallization of minerals, and other conditions. Cracks are a result of man-made stresses, such as transport from the quarry to the fabricator or from fabricator to a residence or commercial facility.

Should granite be perfectly smooth?

The surface can also feel somewhat sandy or dusty if a sealer was applied incorrectly or left on the surface to dry for an extended period of time. A granite countertop of sufficient quality should feel as smooth as glass.

How do you make granite seams disappear?

The gap between two slabs of granite can be filled using epoxy, polyester glue, or resin. It is important to match the color and pigment of the filler with the color of granite to ensure it is as seamless as possible.

How much does it cost to repair a granite countertop seam?

Repairs for granite countertops range from $200 to $1,000. Granite is one of the most high-end materials for kitchen countertops, and it is exceptionally strong, but chips and cracks can appear over time. As with other materials, epoxy is usually needed to repair this damage.

How can you tell if granite is high quality?

One of the biggest hallmarks of quality for a slab of granite is simply how it looks. Unique colors and patterns will earn a higher grade than more standard appearances. Higher quality granite is also less likely to have flaws, pits, cracks, and other imperfections.

Can imperfections in granite be fixed?

Some Imperfections Require Repairing

Fissures occur in granite naturally, so calling them "imperfections" could be viewed as a misnomer. Yet, whether you view them as imperfections or not, they often get "repaired" by strengthening the stone with a "filler".

What is negative about granite?

While you can cut on granite, this isn't recommended—doing so will dull your knives and can sometimes leave behind a metal residue that can be difficult to remove. Seams. In a typical kitchen, granite countertops will need to have 2-3 seams. Depending on the color of granite you choose, average slab size will vary.

How do you fix a cracked hairline in granite?

We do recommend Epoxy slightly more than Acrylic. However, either of the two will fill the gap and “glue” the surface back together. A quick tip for if you are using Epoxy, try to find a coloured version which matches closely to your granite surface. This way it will be less visible.

Will granite crack under high heat?

Because of their high heat resistance, any realistic amount of heat applied to granite countertops in your kitchen will not cause them to chip or crack. Even a red-hot cast iron skillet, which radiates at around 1300 degrees, is 1000 degrees shy of the required temperature to damage the stone.

Will granite crack when cutting?

Granite is one of the most durable countertop materials you can buy, and it can certainly withstand cuts from a knife blade. However, if your granite has a sealer on it, cutting can eventually wear down the sealant.

Should granite seams be visible?

If the slab for your cabinets is long enough to stretch from one side of the wall to the other, you will not need to worry about a visual seam. Otherwise, a pro will be able to make an invisible seam by filling it in with an epoxy resin dyed to match the color of the granite.

How to fill granite gaps?

We would recommend using a product that is 100% silicone, such as Selleys Wet Area Silicone. Selleys wet area silicone comes in a variety of colours to select from, so you can closely match the surface colour.

Can a seam in granite be fixed?

Insert high bond adhesive into seam joints and ensure proper curing process.

Is it normal for granite to have rough spots?

Granite is a natural material, so is it normal for granite to have rough spots anyways? Actually, in your home, it's not. In many cases, when it comes to a countertop surface, granite is often smoothed to best integrate into the design of your home and offer an even, clean surface.

Does granite warp over time?

Both quartzite and granite slabs are extremely durable but also quite heavy, so a sturdy foundation (often referred to as a Fabricator) is required to prevent warping or damage over time.

Is honed granite more expensive?

7) Honed granite is more expensive than polished granite

However, that's not the case. The reason why honed granite costs more is because of its availability.

Is it normal for granite to have cracks?

As mentioned above, cracks can be natural. Granite is known to have natural fissure cracks that can turn into actual cracks. Natural fissures give the countertops character, and they are nothing to worry about.

How to find cracks in granite?

2. Inspecting for Granite Cracks
  1. Light Test: Use a flashlight to shine light at different angles on the granite. ...
  2. Tap Test: Gently tap the surface with a tool (like a small hammer) to see if there are any hollow sounds, which could indicate internal cracks.

Should I worry about a fissure?

Anal fissures are common, and not normally dangerous, but they can hurt a lot. Most anal fissures heal in a few days to weeks with a little self-care. But some anal fissures are more complicated and may resist healing. If you have a chronic fissure, don't hesitate to seek medical treatment.

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