Crack Sealing, also knwn as Seal Coating, is one form of preventive paving maintenance that ensures a consistent operation of town roadways. Pavement cracks develope due to expansion and contraction cuased by temperature fluctuation. These cracks allow water to penetrate the pavement base and sub-base, causing pavement elements to lose structural integrity. Crack sealing is a hot-applied sealant which minimizes water penetration, and lengthens the life of the roadway by preventing early deterioration.