Coal Tar vs Asphalt Driveway Sealer Showdown
Coal tar sealer is a thick, dark liquid made from processed coal, while asphalt sealer is a petroleum-based emulsion designed to coat and protect driveways.
Homeowners often grab whichever bucket is on sale, assuming both sealers are interchangeable. Vague labels and similar black colors blur the lines, so many never realize they’re choosing between two very different products.
Key Differences
Coal tar resists gas drips and forms a rigid shell, giving a slightly glossier finish. Asphalt sealer stays more flexible, blends naturally with existing asphalt, and has a softer matte look.
Which One Should You Choose?
Pick coal tar if you face frequent oil leaks and want maximum stain resistance. Choose asphalt sealer if you prefer an easier, low-odor application and a finish that matches your driveway’s original texture.
Examples and Daily Life
Imagine sealing on a Saturday morning: coal tar fills the air with a strong smell and needs a full day to dry, while asphalt sealer lets you back on the driveway by evening with minimal odor.
Can I apply these sealers myself?
Yes, both come in DIY buckets; follow the label and stir well.
How often should I reseal?
Most driveways benefit from a fresh coat every 2–4 years.