Resealing granite countertops costs about $100 if you do it yourself and roughly $200 to $350 if you hire a professional for an average-sized kitchen. The DIY cost is almost entirely the sealer itself ($15–$65) plus a few microfiber cloths; the professional cost is mostly labor, since the job takes only about four hours. After 10 years sealing granite on customer jobs, here’s the honest cost breakdown, when resealing is actually worth paying a pro for, and how to know if your granite even needs it.
Cost to Reseal Granite: DIY vs. Professional
| Approach | Typical Cost | What’s Included |
|---|---|---|
| DIY | ~$100 | Sealer ($15–$65) + microfiber cloths; your time (~4 hrs incl. cure waiting) |
| Professional | $200–$350 | Materials + labor; roughly $0.77–$2.24/sq ft installed |
For most homeowners, resealing granite is a genuinely easy DIY job — and the cost difference (about $100 vs. $200–$350) is almost all labor for a four-hour task. Unless you dislike the work or have an unusually large or complex installation, doing it yourself saves real money.
DIY Resealing Cost Breakdown
The DIY cost is small and simple:
- Granite sealer: $15–$65. Water-based sealers sit at the low end; premium solvent-based, longer-lasting sealers at the high end. One bottle typically covers a whole kitchen with sealer to spare. See my best granite sealer guide for specific product picks.
- Microfiber cloths: a few dollars — you need clean ones for cleaning, applying, and buffing.
- That’s it. No special tools. Materials run roughly $0.19 per square foot, so a typical kitchen comes in around $50 in supplies, often a bit more with a premium sealer.
Call it about $100 all-in for a normal kitchen, mostly depending on which sealer you choose.
Professional Resealing Cost Breakdown
Hiring a pro runs $200–$350 for an average kitchen, or roughly $0.77 to $2.24 per square foot. The labor portion — $150–$300, in line with national cost data — covers project planning, buying materials, setup, cleaning and prepping the countertop, applying the sealer, and cleanup. The job itself takes about four hours including cure waiting.
When is paying a pro worth it? A few cases: a very large or multi-level installation, a high-end exotic granite where you want zero risk, a granite that needs a heavy-duty long-life sealer applied precisely, or simply if you’d rather not do it. Otherwise, this is one of the most DIY-friendly maintenance tasks a granite owner can take on.
First — Does Your Granite Actually Need Resealing?
Before spending anything, run the water test. Sprinkle a few drops of water on the granite and watch for 3–5 minutes:
- Water beads up → the seal is intact. Don’t reseal — you’d be wasting money and product.
- Water flattens but doesn’t darken the stone → seal is fading; plan to reseal soon.
- Water soaks in and darkens the stone → the seal has failed; reseal now.
Modern sealers last far longer than the old “reseal every year” advice — many protect for 3 to 5+ years, and dense dark granites sometimes barely need sealing at all. The water test, not the calendar, tells you when to spend the money. The general professional guideline, echoed by the Natural Stone Institute, is to check every year or two, but only actually reseal when the test fails.
How to Reseal Granite Yourself
The DIY process, briefly: clean the granite with pH-neutral soap and water, let it dry completely (ideally overnight — trapped moisture blocks the sealer), apply the sealer evenly per the product directions, let it dwell the specified time, wipe off all excess before it cures on the surface, apply a second coat if directed, and let it cure fully (often 24 hours) before using the counter. The full step-by-step is in my how to seal granite countertops guide.
Frequently Asked Questions
How much does it cost to reseal granite countertops?
About $100 for DIY (mostly the $15–$65 sealer) or $200–$350 to hire a professional for an average kitchen. The professional cost is mostly labor for what is roughly a four-hour job.
Is it worth paying a professional to reseal granite?
Usually not, for a standard kitchen — resealing is an easy DIY task and you’d be paying $100–$250 extra mostly for labor. Hiring a pro makes more sense for very large or complex installations, exotic high-value granite, or if you simply prefer not to do it.
How often do granite countertops need resealing?
Test with the water-drop method rather than following a calendar. Modern sealers last 3 to 5+ years on most granite; dense dark stones may need it even less often. Check every year or two, but only reseal when water stops beading and starts soaking in.
Can I reseal granite countertops myself?
Yes — it’s one of the most DIY-friendly maintenance jobs. You need only a granite sealer and microfiber cloths, no special tools, and about four hours including cure time. See my step-by-step sealing guide.
What happens if I don’t reseal my granite?
Unsealed or under-sealed granite becomes vulnerable to staining — oil, wine, and coffee can absorb and leave permanent marks. Resealing is inexpensive insurance against staining a countertop that cost thousands. See my granite pros and cons guide.
