How to Seal Your Quartz Countertops

Clean the Surface Thoroughly

Before sealing, make sure your quartz countertops are completely clean. Use a non-abrasive cleaner or mild soap and water to remove any dirt, debris, or residues. Rinse well and let the surface air dry completely before sealing. This allows the sealer to bond effectively.

Choose the Right Sealer

Purchase a high-quality penetrating sealer specifically made for quartz surfaces. Look for water-based sealers that contain silicone, siloxane, or silane. Avoid flammable solvent-based sealers. Read the product label and instructions carefully before using.

Prepare the Work Area

Make sure the countertops are clean and dry. Cover and protect any nearby surfaces like walls, floors, and cabinets. Open windows and doors to ensure proper ventilation. Remove all food items and appliances from the countertops. Have a damp microfiber cloth ready to wipe away excess sealer.

Apply the Sealer

Shake the sealer bottle well before use. Apply a thin, even layer using a clean lint-free cloth or foam applicator. Use circular motions to spread the sealer over the entire surface. Avoid over-saturation and pooling of the product. Allow the first coat to dry completely, then apply a second coat.

Allow Proper Curing Time

It is crucial to allow the sealer to cure fully before using the countertops. This usually takes 24-72 hours. Avoid placing anything on top or cleaning the surface during this time. Proper curing is essential for the sealer to bond correctly and become resistant.

Clean Up and Care

Once cured, wipe the excess sealer away with a soft, damp microfiber cloth. Wash the countertops with mild soap and water. Harsh cleaners can break down sealers over time, so use a gentle routine cleaning approach. Reapply the sealer every 1-2 years for optimal protection.

Sealing quartz countertops is a simple process that adds longevity and prevents staining. With proper application and curing time, the sealer forms a durable, transparent barrier that maintains the countertop’s like-new appearance. Be sure to use specialty products made for quartz and follow all label instructions carefully.

Frequently Asked Questions About Sealing Quartz Countertops

Should I seal new quartz countertops?

Yes, it is recommended to seal new quartz surfaces. Although pre-sealed at factories, an extra layer of sealer provides added protection, especially for countertops in kitchens.

What is the best sealer for quartz countertops?

Look for water-based penetrating sealers designed for quartz surfaces. Popular options include stone sealers with silicone, silane, or siloxane. Avoid flammable solvent-based products.

How often should I seal my quartz countertops?

Reapply the sealer every 1-2 years. High traffic areas may need more frequent sealing. If liquids start to soak in or stain, it’s time to reseal.

How long does quartz sealer last?

With proper application and curing time, quartz countertop sealers can last 1-2 years before needing reapplication. Ensure proper prep and application for maximum durability.

Can I use quartz countertops after sealing?

Avoid use for 24-72 hours after sealing to allow full curing. This enables the sealer to bond correctly and become stain resistant.

Sealing quartz counters is a simple, affordable way to protect them. Be sure to use the right sealer and allow adequate curing time before use. Consistent sealing every few years will maintain their natural beauty. With the right care, quartz countertops can stay looking like new for decades.


Sealing quartz countertops provides an essential shield against stains, scratches, and damage from daily use. By following the proper sealing steps, allowing adequate curing time, and reapplying every 1-2 years, you can safely preserve the look and durability of your quartz surfaces for many years. Be sure to use specialized sealers made for quartz and carefully follow product instructions. With proper sealing and care, your quartz countertops will maintain their beautiful factory finish and last for decades in your kitchen or bathroom.