What Causes Driveway Asphalt Damage

Weather

• Weather takes a heavy toll on asphalt driveways regardless of where you live. Exposure to full sun causes the surface to fade over time, while heat makes the surface dry and brittle. A brittle surface leaves the driveway vulnerable to rain and snow seeping through the pavement and into the foundation. Once below the surface, water loosens the gravel foundation, which will eventually cause the asphalt to sink from lack of support.

Stains

• Oil, grease and antifreeze are a few types of stains that damage the appearance and strength of asphalt pavement. These liquids leaks from vehicles parked on the driveway and eat away at asphalt if they are not washed away. Always use a cleaner approved for asphalt or a mixture of 1 part white vinegar to 4 parts warm water, as a number of solvents weaken asphalt. Oil stains appear black on asphalt, while antifreeze and grease stains are lighter, but equally noticeable.

Unrepaired Cracks

• Underground moisture and freezing ground temperatures is one of the reasons why cracks form in asphalt. Cracks and pits on the surface will spread if left unrepaired. The best way to stop a small crack from causing major damage to the foundation is to fill it with an asphalt patching compound as soon as you notice the damage.

Unsealed Surface

• Sealing a driveway is the most efficient way to protect it from weather damage and fading. Penetrating sealants also fill porous material to strengthen the surface. Tar emulsion protects an asphalt surface while also increasing elasticity. New asphalt driveways should be sealed three months after installation to give the asphalt proper time to cure. Plan to reseal the surface every two to four years depending on the usage and exposure to sun.