Field notes  ·  August 2026  ·  Seal Coating

Seal Coating: When It Saves You Money — and When It's Wasted

SN

By Santana Noble  ·  President, Santana Paving & Grading  ·  paving since 2007

Seal coating has a mixed reputation, and honestly, it's earned — because it gets sold as a cure for everything. Here's the straight version.

What sealer actually does

Asphalt is rock held together by asphalt cement, and the sun works on that binder every day. Oxidation turns a black, flexible mat gray and brittle; water gets into the surface and works it apart. A seal coat is a wearing layer that slows all of that down. On sound pavement, applied on the right cycle, it genuinely adds years — it's the cheapest maintenance money you can spend on a pavement you want to keep.

When it's wasted

Sealer is a coating, not a repair. It won't hold together pavement that's structurally failing, and it won't stop alligator cracking, rutting, or base failure — it just makes them black for a season. If the pavement is at that stage, the money belongs in repair, not another coat.

The timing

New asphalt needs to cure before its first seal, and after that it's a cycle, not a one-time event — the coast is hard on binder, and a mat that stays sealed stays flexible. We apply sealer to the manufacturer's spec, which is also what keeps the product warranty intact. If you're not sure where your pavement is in the cycle, ask — looking at it costs nothing.

“Sealer protects asphalt. It doesn't repair it. Know which one you're buying.”

Santana Noble
SN

Santana Noble is the president of Santana Paving & Grading, Inc., a family-run Class A engineering contractor in Capitola, California — paving and grading from San Jose to Carmel Valley since 2007.

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