Do Countertops Need To Be Sealed?

If you’ve recently transformed your space with beautiful countertops, you may be wondering, ‘do countertops need to be sealed?’

Yes, countertops need to be sealed because they are porous and can absorb liquids, which can lead to discoloration and stains. However, not all countertops require sealing.

At Southern Stone & Cabinets, we help you understand the differences between natural and engineered options so you can choose the material and maintenance routine that works best for your home and lifestyle.

Do Quartz Countertops Need Sealing?

No. Quartz countertops never need sealing. They are created by combining natural quartz crystals with resins, resulting in a dense, non-porous slab. This makes them naturally resistant to stains, oils, and everyday kitchen spills. The result is a durable finish that does not require the application of a sealer or sealant.

Using a penetrating sealer or surface coating on quartz can lead to a buildup or a dull surface. Instead, regular countertop cleaning with a mild cleaner, warm water, and a soft microfiber cloth is all that’s needed. For homeowners seeking low maintenance, quartz is an ideal choice.

Do Marble Countertops Need Sealing?

Yes. Marble countertops require regular sealing because marble is softer and more porous than granite. Everyday kitchen items, such as wine, oils, or lemon juice, can quickly cause staining or etching if the stone is left unprotected. A quality stone sealer helps create a barrier against liquids.

Due to its high porosity, marble typically requires resealing more frequently, sometimes every few months, rather than just once a year. With consistent care and the right sealant, marble remains elegant while withstanding daily use.

Do Granite Countertops Need Sealing?

Yes. Granite countertops require sealing, although the frequency of sealing depends on the porosity and density of the stone. Sealing creates a barrier against moisture and stains, making the surface durable and locking in its beauty.

Most granite countertops only require resealing every 1 – 2 years. Darker and denser stones may require less frequent care, while lighter varieties may need more regular attention. A simple water test helps determine when the sealing process is due.

How Do You Test If a Countertop Needs Sealing?

There are easy tricks homeowners can try at home. For the water test, place a few drops of water on your counters. If the droplets bead up for more than 15–30 minutes, your sealant is intact. If they soak in, it’s time to reseal.

Another option is the oil test. A drop of olive oil that darkens the stone indicates high porosity. These quick questions can help you determine your sealing needs, but an expert installer or stone specialist, like My Southern Stone, can provide the best recommendations.

What Happens If You Don’t Seal Natural Stone?

Leaving natural stone countertops unprotected can cause permanent damage. Stains from wine, oils, or coffee may soak deep into the stone, while acidic substances like lemon juice can cause etching. Even plain water can leave visible water stains over the course of a day.

Beyond cosmetic issues, unsealed counters may also harbor bacteria in their pores. Proper use of a stone sealer or impregnator reduces permeability, protecting both the stone’s appearance and your family’s health.

How Often Should Countertops Be Resealed?

Resealing frequency depends on the type of stone countertops. Granite countertops usually need it every 1–2 years, while marble countertops may need it annually or even every few months. Quartz countertops never require sealing.

The sealing schedule also depends on your kitchen habits. Heavy cooking, frequent spills, and exposure to liquids may mean you need to reseal sooner. Performing a simple water test is the best way to check.

How to Maintain Countertops After Sealing

Sealing is only part of countertop maintenance. Clean surfaces daily with a pH-neutral cleaner or mild soap and a microfiber cloth. Avoid chemical or abrasive solutions that could damage the finish or wear down the sealant.

Using a cutting board, coasters, and a trivet for a hot pan helps protect your counters. Wiping puddles quickly also prevents long-term staining. With good maintenance practices, your stone countertops can last a lifetime.

Do All Countertops from Southern Stone & Cabinets Come Sealed?

Yes. During installation, Southern Stone & Cabinets ensures all granite and marble countertops are sealed and ready for use. Our skilled fabricators follow best practices in stone fabrication for lasting quality and durability.

Although quartz countertops don’t require sealing, our team provides expert answers, ongoing support, and product care instructions. Homeowners can also visit our showrooms to explore slabs of granite, quartz, and marble firsthand.

Protecting Your Countertops the Right Way with Southern Stone & Cabinets

Whether or not your countertop needs sealing depends on the material. Granite and marble countertops require a good sealer to prevent staining and damage, whereas quartz countertops remain naturally protected. Other natural/engineered stones, such as quartz and limestone, also benefit from a proper sealing process.

At Southern Stone & Cabinets, we combine quality products, professional installation, and expert care to ensure your kitchen counters stay beautiful for decades. Ready to explore granite countertops, white quartz countertops, or classic marble? Contact us today for trusted answers, expert recommendations, and long-lasting results.