How to Clean Quartz Countertops Seams

Keeping your quartz countertops and their seams clean is important for maintaining their beauty and longevity. Quartz is a very durable material, but with regular cleaning and care, you can keep them looking like new for years. In this comprehensive guide, we will discuss everything you need to know about cleaning quartz countertop seams.

What Are Quartz Countertops?

Quartz countertops, sometimes called engineered stone, are made from ground quartz crystals combined with resins and pigments. The result is a man-made material that is non-porous, stain resistant, and easy to maintain.

Some key advantages of quartz countertops:

  • Extremely durable and scratch resistant
  • Resists stains and etching from acids
  • Available in a wide variety of colors and patterns
  • Requires very little maintenance
  • Heat and burn resistant
  • Non-porous so does not need to be sealed

The seams on quartz countertops are where two slabs are joined together. They can attract dirt and grime over time. Keeping the seams clean prevents bacteria buildup and keeps your countertops hygienic.

Supplies Needed for Cleaning Quartz Seams

Cleaning quartz countertop seams does not require any specialized tools or supplies. Here are the basic supplies you’ll need:

  • Mild non-abrasive liquid soap or dish soap
  • Soft cleaning rag or microfiber cloth
  • Soft-bristled cleaning brush
  • Clean water

Optional extras:

  • 50/50 vinegar and water solution
  • Hydrogen peroxide
  • Rubbing alcohol
  • Commercial quartz cleaner

Avoid abrasive cleaners, scouring pads, and products containing bleach or ammonia as these can damage the surface.

How to Clean Quartz Countertop Seams

Follow these steps for cleaning quartz seams:

1. Prepare the Surface

Clear the countertop around the seams of any items, food, or debris. Remove any large particles with a damp cloth. This allows you to really focus on the seams.

2. Mix Cleaning Solution

Mix a mild soap and warm water solution. Dish soap or a non-citrus degreaser works well. Alternatively, make a 50/50 solution of white vinegar and water. The vinegar solution helps remove bacteria and limescale.

3. Scrub the Seams

Use a soft bristled cleaning brush dipped in the cleaning solution to scrub the seams. Apply light pressure and rub back and forth. This agitation will lift up grime from inside the seams.

4. Rinse

Thoroughly rinse away all soap residue under running water. Wipe the seams with a clean damp cloth. Let air dry completely.

5. Disinfect (Optional)

For an extra level of disinfection, spray hydrogen peroxide or rubbing alcohol onto the seams. Allow to sit for a few minutes before wiping. This kills germs in the crevices.

6. Polish Dry

Go over the dry seams with a microfiber cloth to remove any last traces of moisture and restore shine.

Tips for Keeping Quartz Seams Clean

Here are some useful tips for keeping your quartz countertop seams free of grime:

  • Wipe up spills immediately to prevent staining in the crevices.
  • Clean seams routinely when you do overall surface cleaning.
  • If food or grease accumulates, use a degreasing cleaner.
  • For hard water stains, use white vinegar.
  • Avoid pressing wet rags or cleaning tools into the seams – this forces grime inside.
  • Every 3-6 months, deep clean the seams with a soft brush.
  • Replace cleaning rags when they appear soiled.
  • Check under sinks and edges for moisture accumulation.
  • Re-caulk if old caulk appears grimy or worn.

Common Questions About Cleaning Quartz Seams

How often should I clean quartz countertop seams?

  • Clean quartz seams every 1-2 weeks for regular maintenance. Deep clean every 3-6 months with a brush.

How do you get dried food out of quartz seams?

  • Let warm soapy water sit on the dried food for 5 minutes to soften, then gently scrub with a brush. Avoid scraping with sharp objects.

Can I use bleach or ammonia on quartz seams?

  • No, avoid bleach, ammonia, alkaline cleaners, and abrasive pads. They can dull the surface and damage seams.

What is the best homemade cleaner for quartz seams?

  • A 50/50 mix of vinegar and water works well. For tough grease, use a bit of mild dish soap with warm water and scrub.

How do I get rid of mildew in quartz seams?

  • Scrub with a soft brush and hydrogen peroxide or rubbing alcohol. Thoroughly dry after cleaning. Improve ventilation to prevent moisture.


With regular cleaning using the proper methods, you can keep your quartz countertops and seams looking fresh and hygienic for years. Focus on using non-abrasive cleaners and scrubbing with soft brushes to lift grime from the crevices. Aim to deep clean the seams every 3-6 months for the best results. With just a little effort, your quartz countertops will maintain their beauty while withstanding heavy use.