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The Complete Guide to Seal Coating in Kansas City

Why asphalt needs protection, and the full process behind a proper seal coat job.

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Why Asphalt Cracks In The First Place

Asphalt is porous, and water that works its way into those pores expands when it freezes. That expansion is what causes the cracking you see on older driveways, and it's exactly the kind of damage Kansas City's freeze and thaw winters cause year after year.

What Seal Coating Actually Does

A sealcoat fills in that porous surface and creates a barrier that blocks water from getting in to begin with. It also protects against UV damage and the oil and gas spills that break asphalt down over time.

Cleaning Comes Before Sealing

Sealcoat won't bond properly to a dirty surface. The driveway needs a full cleaning first, oil stains treated and loose debris cleared, before any sealant goes down. Skipping this step is one of the most common reasons a seal coat job fails early.

Filling Cracks First

Existing cracks get filled with a hot pour crack filler before sealing. Sealing directly over an unfilled crack just traps the problem underneath a fresh layer instead of actually fixing it.

Application And Cure Time

Sealcoat gets applied evenly with a squeegee or sprayer. It needs dry weather above fifty degrees to cure properly. Foot traffic usually needs to stay off for about twenty four hours, and vehicles for closer to forty eight.

How Often Seal Coating Should Be Done

Most driveways benefit from a fresh seal coat every two to three years, depending on sun exposure, traffic, and how well the surface was prepped the last time it was done.

Frequently Asked Questions

How long does asphalt need to cure before I can drive on it?

Usually around forty eight hours, though it depends on temperature and weather conditions.

Does seal coating fix existing cracks?

Cracks get filled with a hot pour filler as part of the process before sealing, so yes, existing cracks are addressed first.

How often should a driveway be seal coated?

Most driveways do well with a fresh coat every two to three years.

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