Do You Have to Seal a Quartz Countertop?

Quartz countertops are an increasingly popular choice for kitchen and bathroom renovations due to their durability, low maintenance, and stylish appearance. Though quartz is very resilient, some homeowners wonder if they need to apply a sealant to protect the surface. Here is a detailed look at whether you need to seal quartz countertops.

What is Quartz?

Quartz countertops, sometimes called engineered stone, are made from ground natural quartz crystals combined with polymer resins and pigments. The quartz makes up over 90% of the material. It is compacted under high pressure to create an extremely hard, non-porous surface.

Compared to natural stone countertops like granite and marble, quartz offers superior resistance to stains, scratches, chips, and heat. The polymer resins make quartz less prone to cracking and chipping on the edges and corners.

Brands like Caesarstone, Cambria, and Silestone offer a wide range of quartz colors and patterns to match any decor. The look can mimic natural stone or have a more uniform, contemporary vibe.

Do You Need to Seal Quartz Countertops?

The short answer is no. Quartz does not require sealing like granite, marble, and other natural stone countertops.

The main reason countertops need sealing is to prevent stains by filling the natural pores and crevices in the stone. Since quartz is non-porous, liquids cannot penetrate the surface, making sealing unnecessary.

Additionally, sealers wear away over time and need reapplying every 1-2 years. Leaving quartz unsealed avoids this hassle.

Lastly, sealants can create a hazy, artificial sheen on quartz that alters its appearance. Most homeowners prefer to showcase the natural, glossy surface.

Quartz Countertop Maintenance

Though quartz does not need sealing, simple cleaning and care will keep your countertops looking like new for years:

  • For daily cleaning, use a gentle soap/detergent and warm water. Rinse well and dry with a soft cloth.
  • For stuck-on messes, use a non-abrasive cleaner like Soft Scrub or Bon-Ami. Avoid harsh cleaners and scouring pads.
  • Disinfect the surface periodically with hydrogen peroxide, rubbing alcohol, or other disinfectants. Rinse afterwards.
  • Avoid exposing the countertops to strong chemicals like paint removers, oven cleaners, etc. They can damage the finish.
  • Repair any chips or cracks right away to prevent moisture getting in the seams. Most manufacturers offer repair kits.
  • Reseal the joint between the countertop and sink/backsplash every 1-2 years as needed. Use a clear, flexible caulk.

Advantages of Not Sealing Quartz

Choosing not to seal quartz countertops provides several benefits:

Time Savings

  • No need for initial sealing after install
  • Avoid hassle of resealing every 1-2 years

Money Savings

  • Skip the cost of sealant products
  • Prevent costly damage repairs if sealant isn’t reapplied

Enhanced Appearance

  • Maintains the natural, glossy sheen
  • No hazy or streaky sealant altering the look

Ease of Maintenance

  • Spills and messes wipe right off the bare surface
  • Allows cleaners and disinfectants to work effectively

Improved Longevity

  • Prevent sealants from trapping moisture and bacteria
  • No risk of sealant scratching or premature wear

Is Sealing Ever Recommended?

Sealing is strongly discouraged for most quartz countertops. However, certain quartz varieties with a higher natural stone content may benefit slightly from sealing.

Read the manufacturer’s recommendations to see if a sealer could be warranted for your specific quartz material. These cases are rare. Always test sealant on a small hidden area first.

For most homeowners, sealing quartz countertops is simply unnecessary. By foregoing sealants, you can enjoy the natural beauty of quartz and eliminate unnecessary hassle. With simple care and cleaning, a quartz surface will stay pristine and avoid stains even without a sealant.

FAQs About Sealing Quartz

Should I seal my quartz countertops before or after installation?

Sealing is not necessary before or after installation. Quartz does not need a sealant, so save yourself the time and expense.

How long does a quartz sealer last?

Sealers are not required for quartz. If you choose to apply one, expect it to wear away after 1-2 years and require reapplication.

What is the best quartz countertop sealer?

No sealer is recommended. Quartz itself is non-porous and stain-resistant without a sealer. Always verify with your manufacturer first.

Do I need to seal the grout lines around my quartz countertops?

Yes, sealing the grout lines is a good idea to prevent stains. Use a grout sealer made for natural stone. Avoid getting it on the quartz surface.

Should I seal quartz countertops before using them as a food prep surface?

No, quartz does not require sealing for sanitary food prep. Simply wash with soap and water before use.


Quartz manufacturers agree that sealing is not beneficial or necessary for quartz countertops in kitchens, baths, and other settings. The durable non-porous material is stain-resistant in its natural form.

By skipping unnecessary sealing, you can enjoy a fuss-free, low-maintenance quartz surface that retains its flawless factory finish for many years. With simple cleaning and care, your beautiful quartz countertops will stay in tip-top shape.