Infrared Asphalt Repair: How It Works & When to Use It

Quick Verdict

Infrared asphalt repair heats the existing pavement until it is workable, rakes in fresh hot mix, and recompacts it into a single thermally bonded patch with no cold seam at the edge. That seamless bond is the whole point — cold-patch and many saw-cut patches fail at their cold joints, where water gets in. Infrared patching shines on surface-level problems: potholes, birdbaths, raveled spots, and rough joints, where the base underneath is still sound. It is the wrong tool when the base has failed. This guide explains how it works, where it wins, and where you need full-depth repair instead.

How Infrared Asphalt Repair Works

The process is straightforward and fast:

1. Heat. An infrared heater is placed over the damaged area and warms the existing asphalt down a couple of inches over several minutes, until it is soft enough to rake.
2. Rake and rejuvenate. The crew scarifies the hot asphalt, removes any debris, and works in a rejuvenator and a small amount of fresh hot mix to replace lost binder and volume.
3. Level and compact. The blended material is raked to grade and compacted with a roller or plate, bonding the new and old asphalt into one mass.

Because the repair reheats and reworks the pavement that is already there, the patch fuses to the surrounding surface instead of butting against it. There is no cold joint at the perimeter — and the cold joint is exactly where ordinary patches let water in and start to fail. That is what people mean by seamless asphalt repair. For background on reading the defects this addresses, see our pavement distress diagnosis guide.

What Infrared Patching Fixes Well

Infrared is a surface tool. It is a strong fit for:

• Potholes where the base is intact and the failure is in the top lift. See our potholes causes and prevention guide for how to tell a surface pothole from a base failure.
• Birdbaths and shallow depressions that pond water. Reheating lets the crew add material and re-level the low spot. Our depressions and birdbaths in asphalt page explains which depressions are surface-only.
• Raveled and oxidized patches where the surface is loose and shedding stone but the structure is fine.
• Rough or open construction joints and utility cuts that have started to deteriorate at the seam.
• Oil and fuel damaged spots where the binder is softened but localized.

The common thread: the problem lives in the surface, and the base below is still carrying load.

Infrared vs. Saw-Cut Patching

Both are legitimate repairs, and the right choice depends on the failure.

Factor	Infrared patching	Saw-cut (remove and replace)
Edge	Seamless, thermally bonded	Cold joint at the saw cut
Speed	Fast, often open same day	Slower, more equipment
Reaches the base	No — surface only	Yes — can dig and rebuild base
Best for	Surface potholes, birdbaths, joints	Base failure, deep potholes
Material added	Small amount of fresh mix	Full new asphalt section

The key takeaway: infrared is faster and produces a better-sealed edge, but it only addresses the surface. If the base has failed, no amount of reheating the top fixes it. Saw-cut, full-depth repair removes the bad section down to the base and rebuilds it. For the decision between the two, read our full-depth vs. surface repair guide.

When Infrared Is the Wrong Fix

Infrared cannot fix a problem it cannot reach. Do not use it when:

• The area shows alligator (fatigue) cracking, which means the base has failed.
• The spot pumps water or feels soft and spongy under a vehicle — that is a saturated base.
• The pothole is deep and goes through the asphalt into the base.
• A depression is caused by base settlement rather than a surface low spot.

In all of these, reheating the surface puts a nice-looking patch over a failing foundation, and it will fail again within a season. The honest answer there is full-depth repair.

Why Infrared Fits Oregon

Infrared has real advantages in our climate:

• Wet season. A seamless, well-bonded edge keeps water out far better than a cold-joint patch, which matters through months of Oregon rain.
• Short paving window. Infrared is fast and needs less equipment than removal-and-replace, so crews can knock out many surface repairs during the tight May-to-October dry window.
• Freeze-thaw east of the Cascades. A patch with no cold joint gives water fewer places to get in and freeze, which is exactly what destroys ordinary patches in Bend, the Gorge, and the high desert.

The caution is the same everywhere: infrared works on dry, sound pavement. It is not a fix for a wet, failing base, no matter the season.

What It Costs

Industry Baseline Range: infrared patching of surface defects typically runs in the range of $3 to $8 per square foot, while full-depth saw-cut repair of a failed base runs $8 to $20 per square foot+. These are industry baseline ranges for planning only — actual pricing depends on lot size, access, condition, and current market conditions. Get a site-specific quote.

Current Market Reality

Asphalt and fuel prices move with the market, and Oregon's short dry season concentrates repair work. Infrared often comes out cheaper per repair because it adds little new material and moves quickly — but only when it is the right tool. Using it on a base failure to save money guarantees a repeat repair, which erases the savings. Match the method to the failure and the cost takes care of itself.

The Bottom Line

Infrared asphalt repair is the best surface patch available — a fast, seamless, thermally bonded fix for potholes, birdbaths, raveled spots, and bad joints where the base is sound. It is not a structural repair, and it will not save a failed base. Diagnose first, then choose the method. Cojo provides asphalt repair services across Oregon and the I-5 corridor and will tell you whether your spot is an infrared candidate or a full-depth job. Request an assessment for a straight answer.