About Spray Patching

Because most people have never heard of spray patching, we thought it might be best to give you some information on it.

History in Virginia

Spray patching has been around since the early 1980’s. However, it was not until the late 90’s that it was utilized in Virginia. We started patching in 1997 and VDOT purchased a truck that is used in the western part of the state in 1998. Since then, it has become a common tool for addressing potholes and other pavement repairs in several VDOT districts.

How it works

The spray patching process combines two materials, emulsified asphalt (tar) and stone. Spray patching equipment is either mounted to a trailer or a truck chassis. The truck mounted units which we have, carry both materials on one truck in separate compartments. From the cab of the truck, the operator controls a boom positioned on the front to do the following:


The spray patching process provides many advantages. Some are as follows:


Our equipment doesn’t dig holes. Some repairs, due to base problems, need to have the road material extracted and the base fixed before the area can be repaired. If you walk or drive on an area and it pushes down on one side and comes up on the other, you have a need we can only cover up, not properly fix. However, once this area stops moving, basically dries out, we can patch it. This will level it and stop additional water from penetrating the base.