Does Quartz Surfaces Stain?

Frederick M Hueston StoneForensics.com

Quartz surfaces are known for being durable and resistant to many forms of damage, which is why they’re a popular choice for countertops. But just like with any surface, there are some vulnerabilities, and one of the big questions that often comes up is whether or not quartz can stain. The short answer is yes—quartz can stain, though it’s not as common as staining on natural stones like marble or granite. Let’s dive into what you need to know about quartz surfaces and how to deal with potential stains or other damage.

How Can Quartz Stain?

Quartz is an engineered material made up of crushed natural quartz mixed with resins and pigments. The resins bind the quartz particles together, creating a non-porous surface that is highly resistant to staining. However, there are some exceptions.

Stains on quartz surfaces typically occur when a substance sits on the surface for too long or if it’s something particularly strong, like certain chemicals or highly pigmented substances. Examples include:

Coffee, tea, or red wine: These liquids can leave a stain if left to sit on the surface for an extended period.

Permanent markers: If you accidentally get permanent ink on a quartz surface, it can penetrate and leave a mark.

Oils and grease: While quartz is non-porous, oils can still leave a film or stain if they aren’t wiped off quickly.

It’s important to note that most stains on quartz surfaces happen because the resins in the material are not as stain-resistant as the natural quartz itself. These resins, especially in lighter-colored quartz, can be more prone to discoloration from certain chemicals or foods.

Techniques for Removing Stains

If you find a stain on a quartz surface, there’s no need to panic. In many cases, you can remove it with the right approach. Here are some techniques to try:

Mild soap and water: For light stains, a mix of warm water and mild dish soap is often enough to clean the surface.

Glass cleaner: Sometimes, a basic glass cleaner can lift the stain if it’s recent. Spray it on and let it sit for a minute or two, then wipe it off with a soft cloth.

Isopropyl alcohol: For more stubborn stains, you can use a little isopropyl alcohol. Apply it to the stain and let it sit for a few minutes before scrubbing with a non-abrasive sponge.

Baking soda paste: Create a paste with baking soda and water, apply it to the stain, and gently scrub using a soft cloth or sponge. Baking soda is mildly abrasive, so it can help remove stains without damaging the surface.

Non-abrasive cleaners: There are several commercial cleaners designed for quartz surfaces that are safe to use. Just be sure to choose one that’s non-abrasive to avoid scratching.

Heat Damage: Is It a Stain or a Burn?

While stains are one issue, quartz surfaces can also suffer from another problem that may look like staining but is actually burn damage. Quartz is heat-resistant, but it’s not heat-proof. The resin used to bind the quartz particles can be sensitive to high temperatures, and if something too hot is placed directly on the surface, it can cause a discoloration that looks similar to a stain.

This discoloration happens when the resin in the quartz heats up and begins to burn or melt slightly, creating a patch that’s either white or yellowish. Heat damage is not as easy to remove as a regular stain because the surface has essentially been altered at a chemical level. In these cases, the solution often involves:

Polishing: If the burn mark is light, a professional polishing might be able to buff out the damage.

Resurfacing: For more severe burns, the surface may need to be resurfaced by a stone restoration professional.

To prevent this kind of damage, it’s always a good idea to use trivets or heat pads under hot pots, pans, or appliances. This simple precaution can save your quartz surface from unnecessary damage.

Is It Worth Sealing Quartz?

One common misconception is that quartz needs to be sealed to prevent staining. Since quartz is non-porous, it doesn’t require a sealant like natural stone. The resins that bind the quartz already act as a protective layer, so sealing isn’t necessary. However, proper cleaning and maintenance can help keep quartz surfaces looking their best.

While quartz is a low-maintenance and durable surface, it’s not invincible. Stains can happen, and heat damage is a real concern. Understanding the difference between stains and burns is key to addressing the issue correctly and ensuring the longevity of your quartz surfaces.

For stone restoration professionals, knowing these techniques and details can help you provide top-notch service to your clients, giving them peace of mind that their quartz surfaces will stay in great shape for years to come.