Although asphalt has amazing adhesive and waterproofing properties, it has some serious disadvantages that originate from its chemical makeup. For one, Asphalt is a very complex mixture of thousands of chemicals. These chemicals are predominantly open chain in structure, it is this amount of un-saturation within their molecular structure that provides easy access to weather, salts and chemicals to attack and disintegrate the asphaltic molecules. As these molecules disintegrate, the asphalt in the pavement loses much of its original properties. At this time in the aging process of asphalt it will turn from a dark black color to brown to gray. If left untreated the asphalt will continue on its natural path of aging ultimately ending on cracking, alligatoring, and decomposition.
Sierra Nevada Sealcoating uses a asphalt emulsion that is thick, fast drying, non-sticky and waterbased. Most sealcoating applications will protect and beautify your driveway or parking lot 3-6 years before reapplication is needed.