How to Clean and Maintain Granite Countertops: Do’s and Don’ts
Quick answer: Clean granite daily with warm water and a few drops of mild dish soap, dry it with a soft cloth, and reseal it once or twice a year depending on how porous your particular slab is. Avoid vinegar, bleach, ammonia, and abrasive scouring pads; they slowly dull the sealer and etch the stone over time.
Granite is one of the most durable countertop materials available, but “durable” doesn’t mean “maintenance-free.” A few bad habits: the wrong cleaner, a hot pan set down without a trivet, a lemon left sitting too long can dull, stain, or etch a surface that should otherwise last decades. Here’s exactly what to do, and what to avoid.
The Do’s
1. Do clean spills immediately
Granite is sealed, not waterproof. Oil, wine, coffee, and acidic foods (such as tomato sauce and citrus) can seep into the pores of the stone if left sitting, especially on older or honed granite where the seal has worn thinner. Wipe spills as soon as you notice them.
2. Do use a pH-neutral cleaner
A few drops of mild dish soap in warm water are enough for daily cleaning. If you want a dedicated product, look for one labeled specifically for natural stone, as these are formulated to clean without breaking down the sealer.
3. Do dry the surface after cleaning
Water spots and mineral deposits, especially in hard-water areas, can build up a hazy film over time. A quick pass with a microfiber cloth after washing keeps the surface streak-free and helps the sealer last longer.
4. Do use cutting boards and trivets
Granite is scratch-resistant and heat-resistant, but it is not scratch-proof or heat-proof. Direct knife contact can dull knife edges and, over the years, leave faint scratches on the surface. Likewise, placing very hot pans repeatedly in the same spot can eventually stress the sealer, even if the granite itself does not crack.
5. Do test your seal periodically
The simplest maintenance check you can do yourself is to place a small amount of water on the countertop and observe it for a few minutes. If the water beads up, your sealer is still working and no action is needed. If the water darkens the stone or soaks in within a few minutes, it is time to reseal.
6. Do reseal on a schedule that matches your finish
Polished granite generally needs resealing every 12–18 months. Honed or leathered granite should be resealed every 6–12 months because these finishes are more porous. High-traffic kitchen countertops usually require resealing more frequently than bathroom vanities.
7. Do use coasters for glasses and bottles
Acidic drinks such as juice, wine, and soda, along with alcohol-based products like perfume and certain cleaners, can dull the sealer’s sheen if they remain in prolonged contact with the granite surface.
8. Do address stains with a poultice for stubborn cases
If a stain sets into the stone, a baking soda and water poultice applied to the stain, covered with plastic wrap, and left for 24 hours can often draw the stain back out. This method works best for oil-based stains. For tougher or unknown stains, consult your stone fabricator before trying stronger stain removers.
The Don’ts
1. Don’t use vinegar, lemon juice, or other acidic cleaners
Acidic cleaners are one of the most common causes of premature granite damage. Over time, acids can etch the stone’s surface, leaving dull spots that cannot be fully restored by polishing or resealing. This also includes many DIY “natural” cleaning recipes that recommend vinegar—avoid using them on granite.
2. Don’t use bleach or ammonia-based cleaners
Bleach and ammonia-based cleaners can break down the protective sealer much faster than normal wear, making the granite more vulnerable to stains. Many glass and window cleaners also contain ammonia, so check product labels before use.
3. Don’t use abrasive scouring pads or powders
Harsh scrubbing pads and abrasive cleaning powders can scratch polished or honed granite surfaces, leaving dull patches that attract dirt more easily. Always use soft microfiber cloths or non-abrasive sponges instead.
4. Don’t let standing water sit
Standing water around sink cutouts or beneath dish racks can slowly work through the sealer, especially around seams and edges. Wipe these areas dry regularly rather than allowing water to remain for extended periods.
5. Don’t set hot cookware directly on the surface
Although granite withstands heat better than laminate or solid-surface countertops, placing very hot cookware—especially cast iron directly from the stove—on the same spot repeatedly can create thermal stress over time and shorten the life of the sealer.
6. Don’t use granite as a cutting surface
Using granite as a cutting board not only dulls your knives but can also create fine scratch patterns that become visible under certain lighting conditions, such as direct afternoon sunlight.
7. Don’t ignore chips or cracks
Small chips along edges or around sink cutouts may not spread easily, but they can collect moisture and dirt. Have visible chips professionally repaired instead of leaving them untreated.
8. Don’t assume all granite needs the same care
Different granite varieties have different levels of porosity. Darker, denser granites, such as Absolute Black, are generally less porous and require less frequent resealing. Lighter granites with more crystalline structures, including many white and gold varieties, tend to be more porous and benefit from more frequent maintenance. If you’re unsure about your slab, ask your fabricator during installation and keep the information for future reference.
Quick Reference: Weekly, Monthly, Yearly
| Frequency | Task |
|---|---|
| Daily | Wipe spills immediately, especially oil and acidic foods. |
| Weekly | Clean the countertop with pH-neutral soap and water, then dry with a microfiber cloth. |
| Monthly | Perform the water-bead test to check whether the sealer is still effective. |
| Every 6–18 months (depending on finish) | Reseal the granite surface. |
| As needed | Use a poultice for stubborn stains and have chips professionally repaired. |
Final Tip
If your granite develops stains that do not respond to a basic poultice, or if the entire surface begins to look dull rather than just one isolated spot, the issue is usually a worn-out sealer rather than a single spill. In most cases, a professional resealing service can restore the countertop’s appearance and protection.