Driveway Sealcoating questions, answered by experts
A properly applied asphalt driveway sealer, or sealcoat, should last between one and five years. The industry standard is to reseal every two to three years for optimal protection. If you live in a climate with extreme weather, such as heavy rainfall or freezing temperatures, you may need to reseal your driveway more frequently, around every two years. Signs that your driveway needs a new coat of sealant include the appearance of small cracks or uneven drying after rain.
It is not recommended to seal brand-new asphalt immediately. You should wait at least three months after installation to allow the asphalt time to cure properly. Applying a seal coat too soon can trap the asphalt's oils and chemicals, preventing it from fully hardening. This can result in a weaker surface that is more susceptible to damage. After the three-month curing period, sealing the asphalt is beneficial as it can extend its lifespan by protecting it from water, UV rays, and other damaging elements.
In general, crack fillers last for about two years on average. That timeline can be shorter if you have extremely harsh winters or longer if you live in a mild climate. Luckily, this product is pretty affordable at the hardware store (about $10 to $30) and easy to DIY, so redoing it every few years shouldn’t be too much of a hassle.
Maintaining a driveway depends on its material. For concrete and asphalt, it's best to clean the surface thoroughly twice a year with a stiff broom and a pressure washer to remove accumulated dirt and debris. Sealing the driveway is crucial to protect it from water damage and freeze-thaw cycles. Before applying a sealant, pressure wash the surface to remove any loose sealant, dirt, or stains, as sealing over them will trap them. Any cracks or expansion joints should be filled with a flexible polyurethane caulk or asphalt sealer. In colder climates, use sand instead of salt for de-icing. Sand helps melt snow and ice without accelerating the freeze-thaw process, which can cause cracks.
What causes driveways to crack can vary by driveway material. Sealcoating with the right formula creates a protective "shell" over a driveway. Resealing a driveway on schedule helps to preserve its lifespan substantially by keeping it protected against damage from UV rays, motor oil, chemicals, hail, rain, snow, and more. If you don't reseal your driveway, this will lead to brittleness, cracking, and potholes that can eventually cause your driveway to fall apart.
The Gregory, SD homeowners’ guide to driveway sealcoating
From average costs to expert advice, get all the answers you need to get your job done.
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The average driveway coating takes between 30 minutes and eight hours to dry, but weather and sealant type can influence the dry time. Read on to learn more.