Freeze-thaw cycles, road salt and UV rays all shorten asphalt life. Here's the best timing and prep for a driveway that lasts.
Pittsburgh winters are tough on asphalt. Water seeps into small cracks, freezes overnight, and expands — turning hairline cracks into potholes by spring. Seal coating is the simplest way to block that cycle, but timing matters.
The sweet spot is late spring through early fall, when daytime highs stay above 50°F and the forecast is dry for at least 48 hours. Sealer needs time to cure; rain or heavy dew right after application can leave a blotchy finish.
Before we seal, we clean the surface, prime oil spots and fill cracks with hot-pour rubber. Skipping those steps is like painting over rot — the sealer looks fine for a month, then peels where water was already getting underneath.
For most residential driveways in the North Hills, South Hills and eastern suburbs, sealing every two to three years is enough. Commercial lots with heavier traffic may need annual maintenance.
A quality two-coat job usually takes one day and needs 24 hours before driving on it. Book early in the season — the best dry windows fill up fast.
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