Quartz countertops are an increasingly popular option for kitchen and bathroom remodels due to their durability, stylish appearance, and low maintenance. One common question that arises is whether quartz counters need to be sealed like natural stone. Here is a detailed look at whether quartz countertops need to be sealed.
What is Quartz?
Quartz countertops, sometimes referred to as engineered stone, are made from ground natural quartz crystals combined with resins and pigments. The quartz content typically makes up 90-94% of the material, while the rest is polymer resins that bind it together.
The resins make quartz non-porous, unlike granite and marble which are porous natural stones. This makes quartz resistant to stains and means it does not require sealing in most cases.
Do You Need to Seal Quartz Countertops?
The simple answer is no, quartz counters do not need to be sealed. Since quartz is non-porous, sealants cannot penetrate the surface. Sealing it would have no benefit.
Quartz manufacturers agree across the board that sealing is not necessary. In fact, it can even void warranties by altering the engineered surface.
Here are some other key reasons quartz does not require sealing:
- Quartz lacks pores – Natural stone has tiny pores that allow sealant to soak in. Quartz’s polymer resins fill spaces between quartz particles.
- Doesn’t stain easily – Liquid spills sit on the surface rather than absorbing in. A quick wipe up removes most messes.
- Sealants wear off – Even on surfaces that need sealing, sealants wear down over time. Quartz’s stain-resistance remains constant.
- Adds expense – Sealing quartz provides no advantage while costing money for the sealant product and labor.
Quartz Countertop Maintenance
Though quartz does not need sealing, proper care is still required to keep it looking like new. Here are some tips:
- Wipe up spills immediately to prevent staining. For dried spills, use a non-abrasive cleaner.
- Clean regularly with a mild soap and water. Avoid abrasive cleaners and pads.
- Use a cutting board to protect from scratches and nicks from sharp knives.
- Avoid exposing the surface to harsh chemicals like paint removers, oven cleaners or drain cleaners.
- Reseal any seams near sinks and backsplashes as needed. Silicone caulk prevents moisture penetration.
What About Resealing Existing Sealer?
If you purchase a home with existing quartz counters that was mistakenly sealed, reapplication of sealant is not necessary. The original sealant will gradually wear away over several years.
Attempting to remove the existing sealer completely is not recommended as it risks damaging the surface. It’s best to let it slowly disappear over time. Just follow standard quartz cleaning and care guidelines going forward.
Signs Your Quartz May Need Resealing
Though sealing quartz provides no advantage, sometimes previously sealed counters may appear to need resealing. Signs include:
- Visible watermarks remaining after spills – these indicate worn sealant
- Increased staining from liquids – worn sealant allows absorption
- Chalky dullness in the finish – degraded sealant affects appearance
- Routine maintenance not restoring shine – cleaners cannot penetrate sealant
If you notice these issues on a quartz counter that you know was sealed, resealing may help restore stain resistance and appearance. Consult a countertop professional before attempting this yourself.
Key Takeaways on Sealing Quartz
- Quartz counters do not require sealing due to non-porous resins
- Sealing cannot penetrate and will not benefit quartz counters
- Follow manufacturer instructions against sealing to avoid voiding warranties
- Maintain quartz by wiping spills quickly and cleaning regularly
- Do not attempt to remove existing sealant, just allow it to wear over time
- Consult a professional if resealing seems needed on a previously sealed counter
In summary, quartz manufacturers agree sealing is unnecessary. Keep quartz counters looking their best through proper cleaning practices instead. Reach out to a professional if you have any concerns about an existing sealed quartz surface.
Frequently Asked Questions
Should I seal my quartz countertop I just installed?
No, do not seal a new quartz counter. Sealing cannot penetrate the non-porous surface and provides no benefit. It may even void the manufacturer’s warranty. Simply follow the manufacturer’s care guidelines.
I spilled red wine on my quartz – does it need to be sealed now?
No, sealing is not necessary even after a spill. Simply clean the wine up promptly with a soft cloth and mild non-abrasive cleaner. The quartz will be unharmed. Only porous natural stone like marble would potentially need sealing after a stain.
Can I seal my quartz myself or do I need a professional?
You should not seal quartz counters yourself or hire a professional to do so. Sealing is not recommended or beneficial for quartz surfaces. Save your money and just keep the surface clean.
My installer sealed my new quartz countertop, is that a problem?
Sealing quartz counters is not advised, so you may want to ask your installer why they did so. Check if it voids the manufacturer warranty. The sealer will gradually wear off over time and does not need to be reapplied.
How can I tell if my quartz counters are sealed or not?
It is usually difficult to confirm visually, but signs like watermarks remaining after wiping up spills indicate prior sealing. Try a small inconspicuous test spot with a mild solvent like rubber cement thinner to see if it beads up and can dissolve sealer.
Does sealing quartz change the look or color at all?
Sealers can sometimes alter the appearance slightly, leaving a glossy or wet look. This is often temporary and reverts as the sealer wears away over several years. Improper sealing could potentially yellow or discolor the quartz.
Conclusion
Quartz countertops offer low-maintenance, durable beauty without the need for routine sealing required by natural stone surfaces. Following the manufacturer’s recommendations, quartz should never be sealed and requires only simple cleaning to keep it in great shape for many years. Consult a countertop pro if you have any issues with an existing quartz surface that may have been mistakenly sealed. With proper care, quartz counters will stay looking like new and avoid the sealing hassle.