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Frequently Asked Questions

What makes your sealcoating method different from other contractors?

We hand‑brush coal tar sealant and mix it from concentrate on‑site, adjusting the formula based on current weather conditions. No other local contractors offer this level of customization and care—resulting in a thicker, longer‑lasting finish.

Why is hand‑brushing better than spraying?

Hand‑brushing allows for deeper penetration into the asphalt surface and more precise application around edges and curbs. It creates a thicker, more protective layer that resists wear, weather, and chemicals far better than spray methods.

How does weather‑based mixing improve the sealcoating quality?

By adjusting the mix for temperature and humidity, we ensure the sealant cures properly and bonds effectively. This prevents common issues like peeling, cracking, or premature fading—especially important during unpredictable fall weather.

Is coal tar sealant better than asphalt‑based alternatives?

Yes. Coal tar sealant is more durable, chemical‑resistant, and UV‑stable than asphalt‑based products. When hand‑brushed and weather‑mixed, it offers unmatched longevity and protection—ideal for both residential and commercial surfaces.

How long will the sealcoating last?

Our premium application typically lasts 3–5 years, depending on traffic and exposure. That’s significantly longer than standard spray‑on jobs, which often need reapplication every 1–2 years.

Doctor-Sealgood Asphalt Maintenance

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