Coating & Sealing an Asphalt Driveway | HomeTips
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Coating & Sealing an Asphalt Driveway

One way to extend an asphalt driveway’s life span and to improve the appearance of lusterless, washed-out blacktop is to seal coat it (apply an asphalt-based sealant). As moisture penetrates cracks, then freezes and thaws, cracks grow and allow more water in.

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Coating and sealing an asphalt driveway can keep it in top shape. Photo: Clopay

The problem grows. At the same time, sunlight fades and dries the asphalt, making it brittle. Seal coating a driveway is like painting or staining siding—it helps block damaging sunlight and seals-out moisture.

It also helps a driveway to repel gasoline and oil, which disintegrate the asphalt. One gallon covers about 80 square feet, but be sure to check the actual coverage listed on the can.

1) Pull any weeds and sweep the surface.

2) Use a cold-mix asphalt patch to fill holes or wide cracks, and remove stains, as discussed above.

3) Sweep again, then hose off the surface.

4) On a fairly warm day, apply the sealer according to label directions. Normally, you do this while the driveway is still wet. Allow the sealer to cure and avoid using the driveway for 24 hours.

Get a Pre-Screened Local Asphalt Driveway Contractor

About Don Vandervort
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Don Vandervort developed his expertise more than 30 years ago as Building Editor for both Sunset Books and Home Magazine. He has written more than 30 home improvement books and countless magazine articles. He appeared regularly on HGTV’s “The Fix,” and served as MSN’s home expert. Don founded HomeTips in 1996.

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