What is Sealcoating?

Sealcoating, also known as pavement sealing, is the application of a protective coating to asphalt pavements. The primary purpose of sealcoating is to provide a protective layer that helps extend the life of the asphalt surface by shielding it from the damaging effects of sunlight, water, chemicals, and general wear and tear.

Why is Sealcoating Important?

Sealcoating is a common maintenance practice for asphalt driveways, parking lots, and roadways. Here are key points about sealcoating:

  1. Protective Barrier: Sealcoating forms a protective barrier on the surface of the asphalt, preventing water penetration, ultraviolet (UV) radiation damage, and exposure to oxygen and harmful chemicals.
  2. Prevention of Oxidation: Over time, asphalt can oxidize, leading to the development of cracks and a faded appearance. Sealcoating helps slow down this oxidation process, maintaining the flexibility and appearance of the asphalt.
  3. Weather Resistance: Sealcoating enhances the asphalt’s resistance to weather conditions, including rain, snow, and temperature fluctuations. This protection is crucial in preventing water from seeping into the pavement and causing damage.
  4. Improved Aesthetic Appearance: Sealcoating gives the asphalt a dark, rich appearance, enhancing its aesthetic appeal. This can contribute to a well-maintained and professional look for driveways, parking lots, and other paved surfaces.
  5. Filling Surface Cracks: Sealcoating may include the use of sealant materials that fill small surface cracks and imperfections in the asphalt. This helps maintain a smoother and more even surface.
  6. Easier Maintenance: Sealcoated surfaces are generally easier to clean and maintain. The smooth, sealed surface prevents the accumulation of dirt, debris, and other contaminants.
  7. Cost-Effective Maintenance: Sealcoating is considered a cost-effective preventive maintenance measure. It helps extend the life of the asphalt, reducing the frequency of more extensive repairs or resurfacing.
  8. Application Frequency: Sealcoating is typically recommended every few years, depending on factors such as traffic volume, climate, and the condition of the asphalt. Regular maintenance with sealcoating can significantly contribute to the longevity of the pavement.

It’s important to note that sealcoating is most effective when applied to structurally sound asphalt surfaces. If there are underlying structural issues, such as a compromised base or extensive pavement deterioration, more extensive repairs may be necessary before applying sealcoating.

Sealcoating is usually carried out by professional contractors using specialized equipment, and the application process involves cleaning the surface, repairing minor cracks, and applying the sealcoat evenly. The specific materials and methods used for sealcoating may vary based on regional practices and product specifications.


Sealcoating contractor

John Donohue Asphalt Paving is a premium Asphalt Paving Company in Northern Virginia. With over thirty years of experience, John Donohue Asphalt Paving has  built a strong reputation of honesty, reliability and dedication to its customers and their needs. We have clients throughout Northern Virginia including Loudoun, Fairfax, Prince William, Arlington, Winchester, Essex counties and surrounding areas. GIVE US A CALL TODAY AT 571-255-9187 for a FREE ESTIMATE