Stone notes
Myth: sealed granite can never stain

The myth
We hear this one a lot at the shop: "My granite's sealed, so it can't stain. I don't have to worry about spills anymore." People treat sealing like a force field, something that switches the stone from porous to sealed-tight-forever.
It's a good story. It's just not how sealing works.
What sealing actually does
Granite is a natural stone, and natural stone has some porosity to it. Tiny channels in the surface let liquid soak in over time. A sealer fills those channels near the surface so liquid beads up instead of sinking in right away. That gives you a window, minutes to hours, to notice a spill and wipe it before it becomes a problem.
That's the honest job a sealer does. It slows absorption down. It doesn't shut it off.
Why a spill left overnight can still mark
Even a well-sealed granite countertop can pick up a stain if something sits on it long enough. Red wine, olive oil, coffee, tomato sauce, these all have color or oil that can work into the stone if you leave them alone overnight. The sealer bought you time. Nobody used it.
This is why we tell every customer the same thing at pickup: sealing is maintenance, not a substitute for wiping up after yourself. Both jobs matter.
What we do at install versus what you do later
We seal every countertop we install with a good sealer, applied by installers we've trained to do it right. That's part of the job, not an upsell. A lot of shops hand you the keys and let you figure out sealing on your own. We don't do that.
But that first seal isn't a lifetime pass. Granite should get resealed periodically, usually somewhere around once a year for a kitchen that sees regular use, sometimes longer if the stone is denser or the kitchen's low-traffic. A quick water test tells you when it's time: splash some water on the counter, and if it soaks in and darkens the stone within a few minutes instead of beading up, it's due for a reseal.
What actually protects granite day to day
- Wipe up wine, coffee, oil, and sauce when they happen, not hours later.
- Don't let dishes or produce sit in standing liquid on the counter overnight.
- Reseal on a schedule, not just when you remember.
- Use coasters under bottles of oil or vinegar that live on the counter long-term.
None of this is complicated. It's the same habit you'd use on any nice surface: clean up messes instead of letting them sit.
The bigger point
Granite is one of the more forgiving countertop stones we sell. It resists staining well, especially sealed, and it handles daily kitchen life better than a lot of materials. But sealing is a tool, not a guarantee, and the habit of wiping up spills is what actually keeps your countertop looking new for years. Come by our shop at 2015 Charleston Hwy in Cayce and we'll walk you through what sealing does and doesn't do on the exact slab you're considering.