Beat The Heat: How High Temperatures Affect Asphalt Surfaces

Summer heat can feel great at the lake or on the golf course, but it can take a serious toll on your asphalt. Whether you manage a commercial parking lot or maintain a residential driveway, understanding how high temperatures affect asphalt surfaces can help you protect your investment and avoid costly repairs.

At Super Seal, we’ve spent more than 30 years helping property owners throughout Northern Indiana keep their asphalt in excellent condition. We know firsthand what extreme heat can do to pavement and what steps you can take to prevent long-term damage.

Why Does Heat Affect Asphalt?

Asphalt contains aggregates, sand, and a petroleum-based binder. When temperatures rise, that binder softens. While asphalt is designed to handle seasonal temperature changes, prolonged exposure to intense heat can weaken the pavement’s structure.

On especially hot days, surface temperatures can climb well above the air temperature. As the pavement softens, it becomes more vulnerable to damage from vehicle traffic, heavy loads, and everyday wear.

Common Signs Of Asphalt Heat Damage

Rutting And Surface Deformation

One of the most common heat-related issues is rutting. When asphalt softens, the weight of vehicles can create depressions or grooves in the pavement surface.

You’ll often notice this problem in parking lots, loading zones, and driveways where vehicles frequently stop, turn, or remain parked for extended periods.

Cracking

Many people associate cracks with cold weather, but heat can play a major role too. High temperatures cause asphalt to expand. Over time, repeated expansion and contraction create stress within the pavement. Eventually, cracks begin to form.

Once cracks develop, water can penetrate the surface and accelerate deterioration.

Oxidation And Surface Aging

The sun’s ultraviolet rays continuously break down asphalt binders. This process, known as oxidation, causes the pavement to lose flexibility and become brittle.

As oxidation progresses, asphalt changes from a rich black color to a faded gray appearance. The surface becomes more susceptible to cracking, raveling, and other forms of deterioration.

Soft Spots And Scuffing

During extreme heat, asphalt may become soft enough for tires to leave marks or scuffs on the surface. Heavy vehicles can cause even more noticeable damage, especially in areas where the pavement already shows signs of wear.

How Sealcoating Helps Protect Asphalt

One of the most effective ways to combat asphalt heat damage is through regular sealcoating.

Sealcoating creates a protective barrier that helps shield pavement from UV rays, moisture, chemicals, and oxidation. This protective layer helps maintain flexibility and slows the aging process.

At Super Seal, we recommend proactive maintenance because it costs significantly less than major repairs or full replacement. Our professional sealcoating services help extend the life of driveways, parking lots, and roadways while improving curb appeal.

Additional Ways To Protect Your Asphalt During Summer

You can reduce heat-related damage by following a few simple maintenance practices:

• Schedule routine asphalt inspections.
• Repair cracks as soon as they appear.
• Keep drainage systems functioning properly.
• Avoid allowing heavy equipment to sit on soft pavement for long periods.
• Invest in regular sealcoating and preventative maintenance.

Small issues often become major problems when property owners wait too long to address them.

When Should You Schedule Asphalt Maintenance?

The best time to address asphalt maintenance is before significant damage develops. If you notice fading, cracking, rutting, or other signs of wear, it’s a good idea to schedule a professional evaluation.

Preventative maintenance helps preserve your pavement, improves appearance, and saves money over the long term. Asphalt represents a significant investment, and regular maintenance helps maximize its lifespan.

Protect Your Pavement Before the Heat Wins

Summer temperatures can be tough on asphalt, but proactive maintenance makes a big difference. Whether you need sealcoating, crack filling, asphalt repair, or parking lot maintenance, Super Seal has the experience and equipment to keep your pavement performing at its best.

Contact Super Seal today for a free estimate and let our team help protect your asphalt from the damaging effects of summer heat.

Frequently Asked Questions

Can hot weather damage asphalt?

Yes. High temperatures soften asphalt binders, making pavement more vulnerable to rutting, cracking, scuffing, and surface deformation.

How hot does asphalt get in the summer?

Asphalt surface temperatures often exceed the surrounding air temperature. On sunny days, pavement can become extremely hot and more susceptible to damage.

Does sealcoating protect asphalt from heat?

Yes. Sealcoating helps protect asphalt from UV rays, oxidation, moisture, and chemical exposure. It serves as a protective barrier that extends pavement life.

How often should asphalt be sealcoated?

Most asphalt surfaces benefit from sealcoating every 2 to 3 years, depending on traffic levels, weather conditions, and overall pavement condition.

What are the first signs of asphalt heat damage?

Common warning signs include fading color, surface softening, tire marks, rutting, small cracks, and areas where water begins to collect.