Driveway Sealcoating questions, answered by experts
Yes, it’s possible to seal your driveway too much. Whether you have an asphalt or concrete driveway, sealing it every year opens your driveway to potential damage. Sealing an asphalt driveway annually may cause the seal to crack and peel even more. It may even trap oils within the asphalt that can leave you driving on a soft driveway. Avoid sealing your concrete driveway too much to prevent the concrete from cracking. If water enters these cracks, it can freeze, expand, and cause the cracks to worsen.
While blacktop is a type of asphalt, the terms should not be used interchangeably, as not all asphalt qualifies as blacktop. The primary differences are in their composition, production process, and ideal applications. Blacktop contains more stone than other types of asphalt and is heated to a higher temperature during production—300°F or more—while hot-mix asphalt is heated to between 275°F and 300°F. The ratio of bitumen (a tar-like crude oil) is a key differentiator, though sources vary: some state blacktop has less bitumen, making it less durable, while others claim it has a higher ratio. Due to these differences, asphalt is generally more durable and better for high-traffic areas like highways and streets, while blacktop is more suitable for playgrounds and residential driveways. For a driveway project, it is best to consult a professional to determine the most appropriate material.
DIY asphalt repair is feasible for small issues like cracks or potholes, provided you have the correct materials and tools. However, for more extensive damage or to ensure a durable, smooth surface and prevent further deterioration, engaging professional services is recommended for their expertise and long-lasting results.
DIY sealants exist, but professional application ensures uniform coverage and long-term durability.
Fading color, visible cracks, or water pooling signal the need for sealing to prevent further damage.
The Webster, 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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