Can Quartz Countertops Crack?

Quartz countertops are popular in many homes due to their durability, low maintenance, and stylish appearance. However, some homeowners wonder – can quartz countertops crack? The short answer is yes, quartz can crack under certain circumstances. Understanding the qualities of quartz and being aware of proper use and care can help minimize the chances of cracks forming.

What is Quartz?

Quartz countertops, sometimes called engineered stone, are made from ground natural quartz crystals combined with resins and pigments. The resins bind the quartz particles together to form a durable, non-porous surface. Here are some key facts about quartz:

  • Extremely hard and scratch resistant surface
  • Non-porous – resists staining
  • Does not require regular sealing like natural stone
  • Available in wide variety of colors and patterns
  • Resists heat up to 212°F before possible discoloration
  • More flexible than natural stone for fabrication and installation

While very durable, quartz is not completely indestructible. Heavy impact and other stresses can potentially cause cracks.

How Quartz Can Crack

Under normal use, a quartz countertop is unlikely to crack. However, excessive force, impact, or other conditions can lead to cracking:

Direct Heavy Impact

A significant, direct blow to the surface can cause a quartz countertop to chip or crack. Dropping a heavy object on a corner or edge is an example. Cracks from direct impact are usually visible.

Excessive Weight

While quartz is very strong, enough concentrated weight over a small area can cause cracking. Prolonged placement of excessively heavy objects in one spot creates stress.

Improper Support

Quartz should be fully supported underneath to prevent sagging. Overhangs without sufficient support brackets are vulnerable to cracks from the ongoing strain.

Heat Damage

Exposing quartz to excessive heat can create small fractures or surface cracks over time. Quartz can withstand brief contact with very hot pans, but prolonged exposure to temperatures over 212°F can create stress.

Tension Cracks

Forcing quartz to bend, such as during fabrication or installation, can create hairline stress cracks. These may become more visible over time. Proper fabrication and allowance for expansion can help prevent such cracks.

Settling Foundation

Like other solid surfaces, consistent support is vital for quartz countertops. If the home’s foundation settles unevenly, it can twist the countertops and result in cracks.

How to Prevent Cracking

While not completely crack-proof, quartz holds up very well in real world conditions. Follow these tips to minimize the chance of cracks:

  • Use cutting boards for food prep tasks to prevent direct knife impact on the surface.
  • Lift heavy objects instead of sliding to avoid creating scratches that could later crack.
  • Avoid prolonged placement of hot pots, pans, or appliances in one spot.
  • Ensure overhangs and seams have adequate support systems.
  • Allow space between the backsplash and countertop for expansion and contraction.
  • Have countertops professionally installed and supported properly underneath.
  • Address any potential foundation or settling issues prior to installation.

Quartz requires very little maintenance overall. With proper care and precautions, it can provide years of crack-free performance. However, hairline cracks may form over time from regular use. Sealants are available that can fill in minor cracks to help restore the appearance of quartz countertops.

What If My Quartz Countertop Cracks?

If you do notice a crack in your quartz countertop, contact a professional fabricator immediately for advice. Minor cracks may be able to be repaired. The specific options will depend on the severity and location of the crack.

Partial crack repairs involve filling the crack with a special adhesive designed for quartz. The adhesive cures and bonds with the surrounding quartz. When done properly, the repair can be barely noticeable.

For more severe cracks, a quartz countertop fabricator may recommend a full section replacement. This involves cutting out and removing the cracked section, then bonding in a replacement piece. If the countertop was originally installed in sections, this makes replacements simpler.

Replacement may be the best option for cracks originating from the edge or corners. Cracks in the middle of a slab can often be repaired without a full section replacement. Discuss options with a qualified local quartz fabricator.

While frustrating, cracks in quartz countertops are usually repairable. Be aware of proper use and care to help prevent cracks from excessive impact or flexing. Check for foundation settling issues early before countertop installation. Minor heat-related cracks can often be improved with sealants. And if a crack does eventually form, professional repair services can typically restore the appearance and integrity of your quartz countertop.

FAQ About Cracks in Quartz Countertops

Can you repair cracks in quartz countertops?

Yes, most cracks in quartz countertops can be repaired. Small cracks can be filled with a special adhesive. Larger cracks may require replacing sections. Professional fabricators have the products and techniques to repair cracks while matching the appearance.

What causes cracks in quartz?

Direct blows, excessive weight concentrated in one area, improper support, excessive heat, tension from bending, and foundation settling can all create stress that leads to cracks. Following care guidelines minimizes the risk.

Do quartz countertops crack easily?

No, quartz countertops do not crack easily under normal conditions. Their durability and strength make them resistant to cracks. But excessive impact, weight, or flexing can eventually cause cracks. Proper use and support helps prevent cracks.

Can cracks in quartz countertops be fixed?

Yes, cracks in quartz can often be fixed using adhesives designed for quartz or by replacing sections. The options depend on the severity and location of the crack. Professional quartz fabricators have products and methods for repairing cracks while retaining the appearance.

How much does it cost to repair a cracked quartz countertop?

The cost to repair a cracked quartz countertop depends on the severity. Simple crack repairs with adhesive start around $100. Section replacements may range from $200 for small areas up to over $1000 for larger sections. Contact local professionals for specific estimates.

What colour adhesive do you use to repair quartz?

Clear adhesives are typically used for simplest crack repairs in quartz countertops. Coloured adhesives are also available that can closely match the surrounding quartz for a less noticeable repair. Professionals will determine the best adhesive colour.

Can you patch a quartz countertop?

Yes, it is possible to patch a damaged section of quartz countertop by cutting out the affected area and bonding in a replacement piece. This is often the best solution for larger cracks or chips. Professional quartz fabricators have expertise in repairing countertops with patches.


While not invincible, quartz countertops are remarkably tough and durable compared to other options. Their resistance to cracking is a key benefit for homeowners. However, extreme impact, inadequate support, or excessive heat can cause cracks over time. Following care and usage guidelines will help prevent damage. Minor cracks can often be repaired in place. More severe cracks may warrant section replacements. In most cases, cracked quartz countertops can be restored by an experienced professional fabricator. With proper installation and care, quartz countertops can remain crack-free for many years, boosting the value and aesthetics of your kitchen or bath.