Periodically sealing your asphalt serves two mutually beneficially purposes: it will restore the rich black color, which is aesthetically pleasing, and it will restore the surface binder which promotes the structural integrity of the asphalt pavement.
When asphalt is freshly paved, it has a rich, black color. As it ages, asphalt will progressively become grayer and grayer and the texture will become coarser and coarser. This is the result of gradual decay to the liquid asphalt (or bitumen) that serves as the binder in asphalt pavement.
Depending on the amount of traffic volume, asphalt should be re-sealed every 3-7 years. Most importantly, prior to seal coating, all hairline cracks should be filled with a hot-apply rubberized crack filler to prevent moisture penetration into the sub-base.
Other terms: asphalt sealing, asphalt sealcoating, asphalt seal coating, asphalt resealing, asphalt resurfacing, crack filling, crack sealing
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