How Long Does Sealcoating Take to Dry?

Sealcoating takes 4 to 8 hours to dry enough for foot traffic and 24 to 48 hours to fully cure for vehicle traffic in typical Middle Tennessee weather. Drying time depends on temperature, humidity, sunlight, wind, and the number of coats applied. In cool, humid, or overcast conditions, drying can take significantly longer.

Drying vs curing

Drying and curing are two different things, and both must be complete before the surface can handle traffic:

• Drying means the surface is no longer wet or tacky to the touch. The water or solvent in the sealer has evaporated. The surface looks done but is not yet ready for vehicles.
• Curing means the sealer has reached its full hardness and bond with the asphalt. This chemical process continues after the surface is dry to the touch and typically takes 24 to 48 hours in good conditions.

What affects drying time

• Temperature. Warmer temperatures speed up evaporation. Ideal application temperature is 50 degrees and rising, with overnight lows above 50. Below 50 degrees, drying slows dramatically. Below 40 degrees, the sealer may not cure properly at all. See our temperature guide.
• Humidity. High humidity slows evaporation. On a humid Middle Tennessee summer day, drying can take twice as long as on a dry day at the same temperature.
• Sunlight. Direct sun accelerates drying. Shaded areas of the lot will dry slower than areas in full sun.
• Wind. A breeze helps evaporate moisture. Still air slows drying, especially in humid conditions.
• Number of coats. Two coats take longer to dry than one. The second coat is applied after the first has dried to the touch, which adds to the total project time.
• Sealer mix. The ratio of sealer, water, sand, and additives in the mix affects drying time. A properly mixed commercial sealer dries predictably; a thin or over-diluted mix may dry fast but cure weakly.

Drying time by coat

What happens if you drive on it too soon

• Tire marks. Tires leave permanent dark marks in sealer that has not fully cured. These marks do not come off.
• Tracking. Wet or tacky sealer sticks to tires and is tracked into buildings, onto sidewalks, and onto adjacent pavement.
• Peeling. Tires can peel the sealer off the surface in sheets, especially at the edges where the coating is thinnest.
• Ruin of the job. If enough sealer is tracked or peeled, the affected areas need to be re-done, which means additional cost and downtime.

This is why contractors cordon off the lot in sections and use barricades and tape. Removing the barricades too early is the most common cause of sealcoat damage. The contractor should give you a clear timeline for when the lot can be reopened.

What happens if it rains

Rain during or immediately after sealcoating is a serious problem:

• Rain before the surface dries can wash the sealer off the surface entirely, requiring a full re-application.
• Rain during application stops the job. The wet areas must be allowed to dry before the sealer can be applied, which may mean rescheduling.
• Rain after drying but before curing can cause the sealer to lift, blister, or develop a hazy appearance.

A reputable contractor monitors the forecast and will reschedule if rain is likely. If rain catches a job mid-application, the contractor should stop, protect what has been done, and return to finish once conditions improve. For the full sealcoating process, see our sealcoating guide.