Pothole repairs can be temporary or permanent.
In permanent repairs, the pothole areas is slightly over excavated (to good asphalt) with uniform edges, to the sub grade (full depth), or the sub base, depending upon the condition of the sub grade. Tack is applied to the inside of the pothole to help bind the new asphalt to the old. Hot mix asphalt is added and compacted in stages. The edges of the hole are sealed. The finished pothole should form a monolithic and uniform surface with the surrounding pavement. Full depth repairs will last for an extended period of time if the surface is draining properly.
Temporary repairs include hot mix patching, cold patching and infrared patching. In a hot mix patch, the hole is edged and cleaned, tacked, filled with hot mix and compacted to surface level. The edges of the patch are sealed. Cold patching is an excellent winter alternative to maintain site safety and functionality. The key to a good cold patch is the tight compaction of materials. Infrared patches heat existing materials to bind with the new materials to create a seamless patch. When applied to shallow potholes, infrared patching provides a quick and attractive fix, but is not a permanent solution. When used to better connect surface areas for draining water, infrared patching can be very effective when load and traffic levels are low to moderate.