How long does sealing an exposed-aggregate driveway or patio usually last? Most outdoor acrylic “wet look” sealers need a recoat about every 1–3 years, while penetrating silane/siloxane sealers often run about 5–10 years (see guidance on sealing and protecting exposed aggregate).
If those ranges feel far apart, that’s because people use “lasts” to mean different things (a good example is this exposed aggregate maintenance schedule separating appearance and protection goals). “Lasts” can mean the surface still looks dark and freshly sealed, or it still sheds water and resists salt and stains, and those don’t fail on the same schedule. Add in Wilmington-area sun and tire abrasion on driveways. Your cycle is like sandpaper on a finish, so get ahead of it before it turns into a bigger job.
| Sealer type | Typical recoat window (outdoors) | What “lasts” usually means in practice |
|---|---|---|
| Film-forming acrylic (“wet look”) | ~1–3 years (often ~1–2 on driveways) | Appearance fades first (dulling, uneven sheen), especially in sun and tire paths |
| Penetrating silane/siloxane (mostly invisible) | ~5–10 years | Protection can still work even when the surface looks plain; test water repellency to judge performance |
What “Lasting” Means Here
When you ask how long sealing exposed aggregate “lasts,” or how long does exposed aggregate sealer last, you’re usually mixing two different finish lines. One is appearance: how long the surface keeps that darker, “wet look” or even sheen before it dulls, especially in sun and tire paths. The other is protection: how long the sealer still reduces water absorption and salt intrusion, even if the surface doesn’t look freshly sealed.
Chasing one universal number is a bad bet. This isn’t a Consumer Reports-style question. Decide which outcome matters most on your Wilmington-area slab: keeping the decorative look crisp or keeping moisture and salts out.
In coastal North Carolina, salt air and humidity can shorten the real-world performance window of many driveway sealers even when they still look “okay.” Read more in our article: Salt Air Driveway Sealer
Your Likely Lifespan Range (Acrylic vs Penetrating)
If you use a film-forming acrylic (the common “wet look” choice), plan on recoating about every 1–3 years outdoors for acrylic sealer exposed aggregate durability. On driveways, it is penny wise, pound foolish to expect more from what is basically paint on a high-traffic floor. You’ll notice it first as fading in tire paths or uneven sheen after a wash.
If you want longer-term water repellency without changing the look much, penetrating sealers are often the better match for exposed aggregate patios and driveways. Read more in our article: Concrete Penetrating Sealer
If you use a penetrating silane/siloxane sealer (mostly invisible), you’re usually budgeting about 5–10 years before recoat for penetrating sealer exposed aggregate durability. Don’t mistake a less “rich” look for failure. As This Old House would tell you, protection matters more than the shine.
Acrylic sealers are popular for boosting color and sheen on decorative concrete, but they’re also the most likely to show wear first in tire paths and full sun. Read more in our article: Acrylic Concrete Sealer
How to Tell It’s Time to Reseal
You wait for the calendar to tell you what to do, and the first real clue shows up as a dark, soaking-wet patch that never seems to dry like the rest. By the time stains start setting faster and the surface starts scaling, you’re already paying for catch-up instead of maintenance.
Skip the calendar-only approach for how often to reseal exposed aggregate concrete. Do it right the first time, because water is a slow pry bar once it gets into concrete. On exposed aggregate, appearance often drops off first, but once water starts soaking in, Wilmington-area rain and salt air can work deeper into the slab and make stains and scaling harder to avoid.
A quick check after a rinse or light rain for signs exposed aggregate sealer is wearing off:
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Water stops beading and the surface darkens fast instead of shedding
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Tire paths look dry and chalky compared to the edges
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You get uneven blotches when wet (some areas soak in, others repel)
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New stains bite quickly (oil, mulch tannins, rust) even after cleaning
