If you just installed granite countertops in your Kenmore kitchen, or you’re thinking about it, you’ve probably wondered how to keep them looking new. Granite is tough, but it’s not maintenance-free. Between the damp Pacific Northwest air and daily kitchen spills, a little upkeep goes a long way. Here’s what actually works.
Why Sealing Granite Countertops Matters
Granite is a natural stone, which means it has tiny pores. Left unsealed, those pores can soak up oil, wine, coffee, and other liquids. Over time, that leads to stains that won’t scrub out.
A good sealer fills those pores and creates a barrier. Water and other liquids bead up on the surface instead of sinking in. This gives you time to wipe up a spill before it becomes a permanent mark.
Sealing also helps protect against bacteria growth, which matters most around sinks and food prep areas.
How Often Should You Seal Granite Countertops in Kenmore?
Most granite countertops need resealing once a year. But that number isn’t set in stone (no pun intended). A few things change the timeline:
- Stone color and porosity. Lighter granites, like white or beige varieties, tend to be more porous and may need sealing more often. Darker granites are usually denser.
- How much the counter gets used. A busy kitchen island near the stove sees more spills than a bathroom vanity.
- Local humidity. Kenmore sits right on Lake Washington, and our wet fall and winter months mean more ambient moisture in the home. That can affect how well a sealer holds up over time.
The Water Test
Here’s a simple way to check if your countertop needs resealing. Pour a small amount of water on the surface and let it sit for 15 to 20 minutes.
- If the water beads up, your seal is still doing its job.
- If it soaks in and darkens the stone, it’s time to reseal.
Run this test every few months, especially heading into the rainy season, so you’re never caught off guard.
How to Seal Granite Countertops Yourself
If you want to handle sealing on your own, here’s the basic process:
- Clean the surface thoroughly. Use a stone-safe cleaner and let the countertop dry completely.
- Choose a penetrating sealer. Look for one made specifically for natural stone, not an all-purpose product.
- Apply the sealer in thin, even coats. Follow the manufacturer’s instructions for how long to let it sit.
- Wipe away excess sealer before it dries on the surface, or you’ll end up with a hazy film.
- Let it cure fully before using the countertop again, usually 24 to 48 hours.
This is a project most homeowners can do in an afternoon. That said, a professional resealing job usually gets more even coverage and catches problem spots you might miss, especially around seams and the sink cutout.
Daily and Weekly Maintenance Tips
Sealing is only part of the picture. Day-to-day habits matter just as much for keeping granite countertops in good shape.
Daily Care
- Wipe up spills right away, especially acidic ones like citrus, tomato sauce, or wine.
- Use a soft cloth or sponge with warm water and a mild dish soap.
- Avoid abrasive scrubbers or scouring pads.
Weekly Care
- Deep clean with a dedicated granite cleaner to remove buildup that regular wiping misses.
- Check corners and edges near the sink, where water tends to sit longest.
What to Avoid
- Vinegar, bleach, and ammonia-based cleaners. These break down sealers over time and can dull the finish.
- Cutting directly on the surface. Granite is scratch-resistant, but your knives won’t thank you.
- Setting hot pans directly on the stone. Granite handles heat well, but sudden temperature changes can occasionally cause stress cracks, especially near seams.
Signs Your Granite Countertop Needs Professional Attention
Some issues go beyond a DIY reseal. Call in a professional if you notice:
- Dark stains that don’t lighten after cleaning
- Chips or cracks near the sink or stove
- A dull, worn look across the whole surface
- Seams that look uneven or are starting to separate
Our team fabricates and installs granite countertops throughout Kenmore and the rest of North King County, so we know how local conditions, from lake moisture to hard water, affect stone over time. If your countertop needs more than a quick clean, we can take a look and tell you what it actually needs.
FAQs About Sealing and Maintaining Granite Countertops
How do I know if my granite countertop is sealed? Do the water test. Pour a small puddle of water on the surface and wait 15 to 20 minutes. If it beads up, the seal is working. If it darkens the stone, it’s time to reseal.
Can I use vinegar to clean granite countertops? No. Vinegar is acidic and will slowly wear down the sealer, leaving your countertop more vulnerable to stains. Stick to a mild dish soap or a cleaner made for natural stone.
How long does a granite sealer last? Most sealers last about a year, though this depends on the stone type and how much daily use the countertop gets. Kitchens with heavy traffic may need resealing more often.
Is it bad to cut directly on granite countertops? It won’t usually damage the stone itself, but it will dull your knife blades quickly. Using a cutting board also helps protect the sealer from repeated scratching.
Do dark granite countertops need sealing too? Yes. Dark granite is generally denser and less porous than lighter stone, but it’s not immune to staining. It still needs regular sealing, just possibly less often.
Need to Maintain Granite Countertops in Kenmore?
Bryan’s Countertop & Cabinets, a full service designer, fabricator and installer of custom kitchen and bathroom countertops and cabinets, is ready to meet your undermount sink needs with quality materials and superior workmanship. Our experienced team delivers precision results for all of your custom countertops, custom wood cabinets and stainless steel sink needs. We’ve earned our outstanding reputation through hard work and a commitment to excellence, so contact us today for help building or remodeling the home of your dreams.
High-End Help When You Need to Maintain Granite Countertops in Kenmore
Posted on August 13, 2026 | Published by Ignite Local | Related Local Business