Pothole Repair: The Complete Guide

Potholes are the most visible symptom of pavement failure. They are also the most common source of trip-and-fall claims, tire damage complaints, and tenant frustration. This guide covers what causes potholes, the four main repair methods, what each costs, how long each lasts, and when patching is a waste of money versus when it is the right call.

What causes potholes

Every pothole starts the same way: water gets into or under the asphalt, the base softens, and traffic breaks the weakened surface. The sequence is predictable:

• 1. A crack opens. Thermal stress, traffic loading, or aging causes a crack in the surface.
• 2. Water enters. Rain or snowmelt flows through the crack into the base layer below.
• 3. The base weakens. Saturated aggregate loses its ability to support the pavement above it.
• 4. Traffic pumps the pavement. Vehicles push the asphalt down into the softened base and pull it back up. This flexing breaks the asphalt around the crack.
• 5. Freeze-thaw accelerates it. In Middle Tennessee, water in the crack expands when it freezes, widening the opening. A crack that was barely visible in fall becomes a pothole by late winter.
• 6. The surface collapses. Once enough asphalt around the crack has broken loose, a chunk pops out under traffic. That is a pothole.

Repair methods explained

There are four common pothole repair methods. The right one depends on whether the failure is surface-level or extends into the base, the weather, and how long the repair needs to last.

Cold patch: the temporary fix

Cold patch is a bagged asphalt material that can be poured into a pothole and tamped down without heating. It is available at hardware stores and is the product most often used for quick winter repairs.

• When to use it: Winter stopgaps, small potholes in low-traffic areas, or when hot-mix is not available.
• Lifespan: Weeks to a few months. Cold patch does not bond to the surrounding asphalt. It sits in the hole and gets pushed out by traffic, freeze-thaw, or water intrusion.
• Cost: Low per hole, but you will do it again and again.
• Honest assessment: Cold patch is not a repair. It is a band-aid that keeps a pothole from getting worse until a permanent fix can be made in warmer weather.

Hot mix: the permanent fix

Hot mix asphalt is produced at a plant and delivered hot. It is the same material used for new paving and provides a durable, permanent repair when properly installed.

• When to use it: Spring through fall, when hot-mix plants are operating. The right choice for any pothole where the base is sound.
• Lifespan: Years, often matching the life of the surrounding pavement.
• Cost: Higher than cold patch, but you do it once.
• Limitation: Hot-mix plants close in winter. If you need a repair in January, cold patch is your only option until spring.

Infrared repair

Infrared repair uses a specialized heater to warm the existing asphalt around the pothole until it becomes workable, then new hot mix is blended into the softened area and compacted. The result is a seamless, thermally bonded patch with no joint for water to penetrate.

• When to use it: Surface-level failures, shallow potholes, and areas where a seamless edge matters. Also useful for repairing utility cuts and surface defects.
• Lifespan: Several years when done correctly on appropriate failures.
• Limitation: Infrared only heats the top 2 to 3 inches of asphalt. If the base underneath has failed, the repair will sink or fail because the problem is below where the infrared reaches. See our comparison of cold patch vs hot mix.

Full-depth saw-cut repair

Full-depth repair is the only method that addresses base failure. The process involves saw-cutting a rectangular area around the failure, excavating the full depth of the asphalt, inspecting and recompacting the stone base (adding new base material if needed), and replacing the asphalt in lifts.

• When to use it: Any pothole or failure where the base is compromised. This includes potholes that keep returning, alligatored areas, and failures near drainage structures.
• Lifespan: When done correctly, full-depth repairs can last as long as the surrounding pavement.
• Cost: The most expensive per square foot, but also the only permanent fix for base failures.

How much pothole repair costs

These are budgetary ranges for Middle Tennessee. Final pricing depends on the size and number of failures, whether the base needs rebuilding, traffic control requirements, and whether the repair is part of a larger project or a standalone call. Most contractors have a minimum charge for a standalone repair visit.

How long repairs last

The lifespan of a pothole repair is determined almost entirely by whether the repair method matched the type of failure:

• Cold patch: Weeks to a few months. It is temporary by design.
• Hot-mix surface patch (sound base): Several years, often matching the surrounding pavement.
• Infrared (surface failure, sound base): Several years.
• Full-depth repair (rebuilt base): Can match the life of the surrounding pavement.
• Any patch over a failed base: Months at best. It will sink, crack, or pop out.

When to patch vs replace

Patching makes sense when failures are isolated and the surrounding pavement is still structurally sound. Replacement becomes the better investment when:

• Failures cover more than 25 to 30 percent of the lot surface.
• Alligator cracking is widespread, indicating systemic base fatigue.
• The pavement is at or beyond its design life and repairs would only delay an inevitable replacement.
• Drainage issues are causing repeated failures across the lot, and the fix requires regrading rather than patching.

A good contractor will tell you honestly when you have reached the point where patching is no longer cost-effective. If every contractor you talk to wants to patch and one tells you it is time to replace, take that opinion seriously.

Pothole repair in winter

Hot-mix asphalt plants in Middle Tennessee typically close from roughly December through March. During that window, permanent hot-mix repairs are not available. Cold patch is the only option for keeping potholes safe and passable until spring.

If you have a pothole forming in winter, the right strategy is to cold-patch it as a stopgap and schedule a permanent repair for when plants reopen. Do not let a winter pothole sit unaddressed; water inside it will expand the failure rapidly through freeze-thaw cycles.

Choosing a repair contractor

Ask these questions before hiring a contractor for pothole or asphalt repair:

• What method are you using, and why is it the right one for this failure?
• Is the base sound, or does it need to be rebuilt?
• Are you saw-cutting straight edges, or just feathering material into the hole?
• How deep does the repair go?
• What is the expected lifespan of this repair?
• Will you document the repair with before and after photos?

A contractor who only offers one method for every situation is not giving you the right repair. They are giving you the repair they know how to do. For a broader look at asphalt failures and repair strategy, see our complete guide to asphalt repair.