Asphalt sealcoating in Utah County
Sealcoating is a thin, two-coat layer of asphalt-emulsion sealer applied over sound asphalt to slow UV oxidation and keep water out of the surface. It’s the right maintenance for driveways and parking lots that are intact but turning grey, and Grandview performs it under a B100 license across Utah County and the Salt Lake Valley.
When sealcoating is the right call, and when it isn’t
Sealcoat protects asphalt. It does not repair it. The surface has to be structurally sound first: no potholes, no alligator cracking, no soft spots that flex under a truck. If you have those, start with asphalt repair and patching, let the patches cure, and sealcoat afterward. If the base has failed across most of the surface, sealer is money spent on a lost cause; we’ll say so and point you toward a new asphalt driveway or parking lot instead.
The ideal candidate is asphalt between one and roughly twelve years old that has gone from black to grey, shows hairline cracking, and still drains. Brand-new asphalt is not a candidate yet: fresh hot mix needs six to twelve months for its surface oils to cure, and sealer applied sooner won’t bond.
Sealcoating is the maintenance step in our asphalt and concrete paving work, part of the site, structure and envelope family. For commercial lots, sealcoating and restriping go together. The sealer covers the old paint, so the lot gets a clean layout and a chance to bring accessible stalls up to current ADA parking requirements in the same shutdown.
Two thin coats, and everything that has to happen before them
- Clean. Power-blow and wire-brush the surface, then pressure-wash where dirt is bonded. Sealer sticks to asphalt, not to dust; most peeling complaints trace back to a skipped cleaning.
- Prime oil spots. Drip spots under parked cars get a dedicated oil-spot primer, or the sealer beads up and lifts within a season.
- Fill cracks. Cracks wider than about a quarter inch are routed and filled with hot-pour rubberized sealant, which stays flexible through the Wasatch Front’s hundred-plus freeze–thaw days a year.
- First coat by squeegee. Asphalt-emulsion sealer blended with two to four pounds of silica sand per gallon, worked into the surface texture. The sand is what gives a sealed driveway traction on a frosty morning.
- Second coat by spray. Applied after the first coat has flashed, for an even finish and double film thickness in the traffic lanes.
- Cure and reopen. Foot traffic after roughly 24 hours, vehicles after 24 to 48. Striping goes on once the sealer has fully cured.
On chemistry: we specify refined asphalt-emulsion sealer with a polymer additive rather than coal-tar products. Coal-tar sealcoat is a documented source of polycyclic aromatic hydrocarbons in runoff and a growing number of jurisdictions restrict it; asphalt emulsion performs well at our elevation when it’s applied in two coats with sand.
How often should asphalt be sealcoated in Utah?
Every two to four years for most driveways and lots, with the first application six to twelve months after new paving. Utah County sits at 4,500 feet and higher, where stronger UV oxidizes the asphalt binder faster, so the shorter end of that range suits unshaded, south-facing surfaces. More often than every two years is not better: sealer stacked in thick layers cracks and flakes on its own.
Timing within the year matters as much as the interval. Sealer needs pavement and air temperatures above about 50°F and rising and no rain for 24 hours, which gives a working season from roughly mid-May to late September along the Wasatch Front. A monsoon cloudburst thirty minutes after a spray coat washes the job into the gutter, so in July and August we schedule around afternoon storm patterns rather than hoping.
What sealcoating costs in Utah County
As a ballpark planning number, not a promise: two-coat sealcoating on prepared asphalt typically runs in the range of $0.15 to $0.40 per square foot in Utah, with small residential driveways carrying a minimum charge because mobilization costs the same for 600 square feet as for 1,600. Crack filling is priced by the linear foot on top of that, and oil-spot priming by the spot.
What moves the number:
- Crack footage. A driveway with 200 feet of hot-pour crack sealing costs noticeably more than the same area with twenty.
- Surface condition. Heavy oil staining, moss on shaded north sides, or bonded dirt that needs pressure washing adds prep time.
- Sand and polymer loading. Heavier packages cost more per gallon and last longer; we recommend them on sloped driveways and drive lanes.
Because sealcoating is cheap relative to paving, it is also where the lowest bids hide the thinnest work: one coat, no sand, watered-down sealer. Ask any bidder, including us, how many coats, what sand loading, and whether cracks get hot-pour. Our license is verifiable at dopl.utah.gov, and the scope goes in writing first.
Questions we actually get
Will sealcoating fix the cracks in my driveway?
No. Sealer is a surface film a few mils thick; it won’t bridge a crack. We fill cracks over a quarter inch with hot-pour rubberized sealant first, and the sealcoat then covers the repair so the driveway reads as one uniform black surface. Hairline cracks usually seal over with two coats.
How long do I have to stay off it?
Plan on 24 hours before walking on it and 24 to 48 before driving, longer if it’s cool or humid. Turning the wheels while parked on fresh sealer leaves power-steering scuffs, so for the first week pull in and out straight. Keep sprinklers off the driveway until it has cured.
Why did my last sealcoat wear off in the tire tracks after one winter?
Usually one of three things: a single coat instead of two, no sand in the mix, or sealer sprayed onto a dusty surface. Tire lanes carry the abrasion, and a thin unsanded film gives out there first. Two sanded coats on a clean surface should hold color in the tracks for two to three seasons at Utah’s elevation.
Can you sealcoat a parking lot without closing it?
Partly. We split lots into sections and seal them in phases so part of the parking stays open, working around delivery windows and tenant hours. Each phase still needs its 24-to-48-hour cure, so a fully occupied lot with no overflow parking usually takes two or three visits rather than one.
Tell us what you’re working on
Send the address and a photo or two of the surface and we’ll tell you whether it’s ready for sealcoating, needs repair first, or has passed the point where sealer is worth it. We reply within a couple of hours during business hours, a day at most.