Asphalt parking lots are very expensive to install and have an effective life of 7-12 years before expensive repairs must be undertaken. Asphalt pavements have two major weaknesses that lead to this limited lifetime. 1. Asphalt has poor resistance to UV radiation or simply sunlight. 2. Another weakness of asphalt pavements is its poor resistance to salts, chemicals, and petroleum products. Asphalt surfaces can be effectively protected by using a sealcoating which acts as a barrier between the external harmful elements and the asphalt pavement.
Ok so what is the bottom dollar? It costs money for maintenance, won’t this add up to overlay every 10-15 years? NO, If one chooses to protect their asphalt surfaces with a sealcoating and crack sealing, the life of the asphalt can at least be doubled and many times tripled at a fraction of the overlay costs.