4 Frequently Asked Questions About Protecting A Driveway With Seal Coat


Having a new asphalt driveway installed certainly isn't cheap. For that reason, it's natural to want to protect your investment in any way possible. If you have recently installed an asphalt surface, or if you simply want to learn how to extend the lifespan of an older asphalt driveway, read on. This article will provide answers to four frequent questions about the benefits of seal coat.

What is seal coat?

Seal coat is a type of liquid that is applied to the surface of asphalt to help give it an extra measure of protection. Its principal ingredient is either a diluted form of coal tar or a so-called asphalt emulsion--in other words, a mixture of asphalt cement and water. To this basic ingredient are added such things as silica sand, clay, and polymers that help the seal coat integrate with the existing asphalt. Seal coat is applied in an even layer to your asphalt surface using either a roller brush, a squeegee, or a spray wand.

What are the benefits of seal coat?

The chief advantage offered by seal coat is an increase in the lifespan of an asphalt driveway. It achieves this effect by refreshing your asphalt's natural ability to resist degradation. Over time, this ability tends to be reduced by exposure to water, sunlight, and other factors. As the defensive capabilities of asphalt wear down, oxidation, cracks, and potholes become more common.

The difference in longevity between a driveway that has received regular applications of seal coat and one that has not is striking. Unsealed asphalt may require replacement as little as ten years after installation. Seal coat can extend the lifespan of asphalt up to as much as thirty years.

How frequently does seal coat need to be applied?

You can enjoy the full protective benefits of seal coat by applying as infrequently as once every other year. Not only are more frequent applications unnecessary, but they can actually end up harming your asphalt. That's because if too much sealer is allowed to build up in the top layers of asphalt, unattractive peeling and cracking may occur.

How do I prepare my asphalt for seal coat?

In order to offer the maximum benefit, seal coat needs to be able to adequately bond with your existing asphalt. Dirt, oil, and vegetation can all have negative effects on the strength of this bond. You should therefore prepare for the application of seal coat by sweeping the driveway, uprooting any plants, and removing any oil stains. Then hose down the asphalt; once dry, it should be ready for seal coat, such as from Home Outdoor.


3 June 2016

Talking About Concrete Contractors

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