 This type of surface has a variety of other names including tar-seal or tarseal, tar and chip, sprayed seal or surface dressing.Chipsealing is cheaper than resurfacing an asphalt concrete or a Portland cement concrete pavement, but not as long-lasting.Chipseals are constructed by evenly distributing a thin base of hot tar, bitumen or asphalt onto an existing pavement and then embedding finely graded aggregate into it.