A Bituminous Surface Treatment generally consists of aggregate spread over a sprayed-on asphalt emulsion (HFE-150, RS-2) or cut-back asphalt (MC-800). Asphalt applications are done with a calibrated/computerized etnyre distributor. This type of roadway treatment has a wide variety of regional descriptive terms “oil and chip”, “tar and chip”, “seal coat”, or “oil and chat.” In order to obtain the best-finished product, a bituminous surface treatment has to be applied to a solid, prepared base. Whether a job requires one, two, or three coats of oil (HFE-150, MC-800, RS-2) and chips (CA-14 or CA-16) depends on the base. If the job is a new roadway, a prime coat (MC-30) will be applied. This further solidifies the base before the other coats are applied.

It is our main goal to insure that when the asphalt and rock are applied, the base is prepared correctly. Both the aggregate and asphalt used are state inspected materials. Due to the fact that the asphalt has to cure at certain temperatures, the optimum time to oil and chip is April through October.