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Slows oxidation and water penetration. Exposure to oxygen hardens asphalt bingers and results in a brittle pavement surface that soon cracks. These cracks permit water to penetrate into the sub base, weakening it and reducing pavement strength. This in turn leads to more cracks, which can eventually expand and become potholes. Seal coats fill surface voids, reducing exposure to oxygen and water and prolonging pavement life.
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Resists ultraviolet rays. Ultraviolet rays from the sun break the links between carbon bonds within asphalt. Although the seal coat does not repair any damage that has already occurred to the asphalt, it does prevent ultraviolet rays from further damaging the asphalt pavement.
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Beautification. Fresh seal coat brings a dark black color to the pavement, making it look and wear like new. A black parking lot has a clean, rich look that presents a positive image of the company, facility, or residential complex.
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Cost-effective in the long run. The price of asphalt will always be affected by crude oil prices, which fluctuate when supplies vary. It’s less expensive to seal coat a parking lot every few years than it is to overlay or construct a new lot. Seal coating preserves asphalt for pennies per square foot. |
