Quartz countertops have become increasingly popular in kitchen and bathroom remodels thanks to their durability, low maintenance, and stylish appearance. However, one question that often comes up is whether quartz countertops require additional support in the form of brackets. Here is a detailed look at whether quartz countertops need support brackets.
What are Quartz Countertops?
Quartz countertops, sometimes referred to as engineered stone countertops, are made from ground quartz crystals combined with resins and pigments. The quartz crystals make up over 90% of the material, making quartz countertops very hard and dense.
Some key features of quartz countertops:
- Extremely durable and scratch resistant
- Resists stains, heat, and moisture
- Non-porous so does not require sealing
- Available in a wide range of colors and patterns
- Requires very little maintenance
The resins bind the quartz crystals together to form a slab, which is then cut and fabricated into custom countertops. Thanks to its durability and aesthetic appeal, quartz has surpassed natural stone countertops like granite in popularity.
Do Quartz Countertops Need Support Brackets?
In most cases, quartz countertops do not require additional support or brackets. Quartz is engineered to be very strong and able to span unsupported areas without sagging or cracking. Most quartz slabs are 3 cm thick, which is sturdy enough for standard countertop installations without reinforcement.
Here are some key factors why quartz countertops typically do not need brackets:
- Quartz is denser and less porous than natural stone. The resin binds the quartz crystals into a tight formation, reducing voids or weak points.
- Quartz slabs are reinforced with polymers. The resins make quartz more flex resistant compared to natural stone.
- Quartz is installed in relatively small sections. Countertops are made of several smaller pieces joined together, minimizing the span length.
- Modern quartz has high flexural strength. Engineered quartz is tested to withstand bending force without permanent deformation.
- Standards specify required strength. Industry standards for quartz specify minimum flexural strength and modulus of rupture values.
Under normal conditions, a professionally installed quartz countertop should not require any additional reinforcement with brackets. Quartz manufacturers recommend full support along the base of the countertop instead.
When Support Brackets May be Needed
While quartz countertops generally do not require brackets, there are some exceptions where reinforcement may be warranted:
- For a very long span or overhang. Significantly overhanging sections may require a bracket to reduce risk of cracking or sagging over time.
- If there is inadequate support below. Countertops need full support underneath. Lack of support increases stress on the quartz.
- For heavy loads or high use areas. Extra weight or force from frequent activity may necessitate a bracket for stability.
- For thinner quartz material. Some specialty quartz at 2cm may not have the same span capacity as 3cm slabs.
- For weak areas or seams. Strategically placed brackets can strengthen weak seams or pre-existing flaws in the slab.
- For peace of mind. Some homeowners opt for brackets for added security, even if not absolutely required.
If any of these situations apply, consulting with your quartz fabricator about adding support brackets is recommended. They can evaluate the design and conditions to determine if reinforcement is prudent.
How to Add Support Brackets
If it is deemed necessary, here are some recommendations on adding support brackets:
- Use quality brackets designed for stone/quartz. Look for solid steel or aluminum brackets that resist corrosion.
- Place at seams or stress points. Positioning the brackets at the joints between sections or spots prone to force maximizes effectiveness.
- Allow 1-2” overhang for brackets. The quartz slab should have a small overhang past the bracket for proper support.
- Secure tightly to cabinetry. Brackets must be screwed firmly into solid cabinet framing or backing for stability.
- Adhere bracket pads to quartz underside. Pads cushion the quartz and prevent cracking where bracket pressure occurs.
Following manufacturer instructions for secure installation is critical. Improper bracket placement or loose attachments can cause cracking or other damage. Consulting the fabricator helps ensure proper bracket use.
Maintaining Quartz Countertops with Brackets
For quartz countertops with support brackets, some maintenance is required:
- Inspect brackets occasionally. Check for loose screws or shifting that could compromise support.
- Clean under brackets. Spills and debris can collect under brackets, causing buildup or stains.
- Avoid excessive weight at brackets. Don’t apply concentrated force on sections with brackets.
- Have fabricator check during repairs. If having the quartz repaired or modified, consult your fabricator about the brackets.
With proper installation and care, support brackets can effectively reinforce quartz countertops at stress points or weak areas. But in most standard installations, the durability and rigidity of quartz eliminates the need for brackets.
Frequently Asked Questions About Quartz Countertop Brackets
Here are answers to some common questions about whether quartz countertops require support brackets:
Do all quartz countertops need brackets?
No, most quartz countertops do not require brackets when properly installed. Only in certain situations will a fabricator recommend adding reinforcement brackets.
How much overhang can quartz have without brackets?
Quartz can typically overhang 6-10 inches without needing brackets. For longer overhangs up to 16 inches, reinforcement is recommended depending on thickness.
Should I get a bracket if I am unsure?
If uncertain, it doesn’t hurt to add a bracket for peace of mind. It’s a minimal cost for extra support in higher stress areas. Consult your fabricator for advice.
Can I install a bracket myself?
Brackets require careful measurement and drilling into cabinetry, so are best installed by a professional fabricator. Attempting DIY bracket installation risks damage to the quartz.
Do brackets take away from the aesthetics?
High quality steel or aluminum brackets are quite minimal in appearance. They can be strategically placed under overhangs or at seams to be barely noticeable.
Does bracket requirement depend on quartz brand?
All major quartz brands meet certain strength standards. The need for brackets depends more on your specific installation span, support, and layout rather than brand.
What thickness of quartz needs brackets?
Most residential quartz is 3 cm thick, which normally does not need extra support. Some specialty 2 cm quartz for vertical applications or backsplashes may need reinforcement.
Can you remove and reinstall brackets later?
It’s best not to remove brackets once installed, as doing so can damage the quartz. Have your original fabricator move or add new brackets if needed.
Conclusion
While some homeowners assume that quartz countertops require brackets like natural stone, in most cases quartz is engineered to be self-supporting. Only for certain high stress spans, overhangs, or weak areas might a fabricator recommend strategically placed metal support brackets. When installed according to manufacturer specifications, today’s quartz countertops maintain their durability and beauty without sagging or cracking, with or without brackets. Consult with your professional quartz fabricator to determine if your design would benefit from reinforcement brackets. With their guidance, you can confidently install a quartz countertop that will last for many years of high performance and luxury.