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  • The DRYCO Advantage
  • Asphalt
    • Striping
    • Sealcoating
    • Slurry Seal
    • Game Courts
    • Parking Lot Maintenance
    • Full Depth Reclamation
    • Paving & Asphalt Calculator
    • Sealcoating Calculator
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  • Project Highlights
  • 800-378-2177
  • Schedule a Free Estimate

Experts in Cost-Effective Asphalt Sealing

Precision Sealcoating

Sealcoating asphalt allows pavement to stay flexible for as long as possible by protecting the binder (liquid asphalt) that holds the pavement together. Unfortunately, many sealcoating methods don’t get the job done, or simply look bad.

Over the past 25 years, we’ve worked to find innovative ways to make and apply an asphalt sealcoat that works.

The results are in: we are the first asphalt sealing company in Northern California to perfect our own spray-on sealcoast machines. This method is the only way to get a uniform appearance and coverage on tight surfaces (which we find on 90% of the lots we seal).

Pavement Life Cycle & Sealcoating Process

New Asphalt

New asphalt should have very large rock aggregate visible. There should be a dependably smooth finish. It is recommended to do the first sealcoat application within 1-2 years of pavement being placed.

Aged Asphalt

Over time, the surface of asphalt begins to degrade. Oxidation, wear, and exposure to the elements break down the aggregates in the mixture. This process is an expected part of the life cycle of asphalt pavement.

Newly Sealcoated Asphalt

Asphalt pavement which has been freshly sealcoated will have a reliable and even black surface.

Sealcoat Under Use

Normal wear will begin to show on the exposed rock on sealcoated asphalt. Air, sun, traffic, and weather will all work to wear the sealer away; this is an expected part of the pavement life cycle, and not a failure of the product.

Sealcoat Reapplication

It is recommended to sealcoat your pavement every 3-5 years.

Frequently Asked Questions

Does sealcoating fill cracks?

No, the sealcoat itself does not fill cracks. In preparation for sealcoating, cracks must be filled with a high-quality, hot-applied crack filler such as Craftco or DuraSeal.

When is it too late to repair asphalt with a sealcoat?

Unfortunately, in the life of every asphalt surface, there comes a time when it is just too far gone to be repaired.

Typically, if 25-35% of the total surface area requires substantial removal, it’s more cost-effective to replace the entire asphalt surface. On average, asphalt will last about 30 years, but maintenance is everything.

Regularly applying sealcoast to asphalt on a schedule (first applications within 1-2 years; every 3-5 years after that) will allow the pavement to stay flexible for as long as possible by protecting the binder (liquid asphalt) that holds the pavement together.

How long does a pavement sealcoat last?

It can last 3-5 years.

How long does it take to sealcoat a parking lot?

That depends on the size of the parking lot and the application method. Applying the coat with a brush or squeegee is more time-intensive than applying it with specialized spray equipment. Either way, allow at least 24 hours for it to fully cure.

What is thermoplastic striping?

Thermoplastic striping is a specialized pavement marking material that delivers bright, reflective, and highly durable lines for roads and parking lots. Applied hot, this material bonds directly to the surface, creating a strong layer that resists heavy traffic, weather, and wear much better than traditional paint. For parking lot striping, it offers excellent durability, meaning fewer touch-ups and reduced long-term maintenance costs.

Because thermoplastic dries almost instantly, it minimizes disruptions during a striping job by eliminating traffic delays, material tracking, and the need for extensive coning. The reflective glass beads embedded in the material also improve visibility at night, keeping parking lot lines clear and safe for drivers. While thermoplastic striping may require professional equipment such as a line striping machine and comes with a higher upfront cost, its long life span makes it one of the most cost-effective options for pavement marking.

How long does it take to stripe a commercial sized parking lot?

The time it takes to complete a parking lot striping job can vary widely based on several factors. The overall size of the parking lot is the most obvious; a small retail lot with just a few dozen spaces might be completed in a couple of hours, while a large commercial parking area with hundreds of stalls, fire lanes, and ADA-compliant markings can take a full day or more.

Weather plays a big role as well. Warmer, dry conditions help the material cure faster, whereas humidity or cooler temperatures can extend drying times. Many contractors recommend line striping at night to reduce downtime for businesses, since fewer cars are in the lot and fresh lines can cure without interruption. Using professional equipment such as a line striping machine ensures crisp, straight lines and efficient coverage, which speeds up the process while maintaining quality.

Ultimately, a well-planned striping job balances speed with durability, ensuring your parking lot lines remain visible, safe, and low-maintenance for years to come.

How do you apply thermoplastic parking lot and road markings?

Thermoplastic striping is one of the most durable materials used in parking lot striping and pavement marking, but how it’s applied makes all the difference in quality and longevity. There are three common methods of application, each suited for different types of jobs and traffic conditions:

  • Extrude: This method keeps the application equipment in direct contact with the pavement surface. It produces highly durable lines that can withstand heavy traffic loads, making it ideal for roadways or high-use parking lots where long-lasting performance is critical.
  • Ribbon: Here, the line striping machine applies the material with a ribbon gun elevated slightly (about 1–1.5 inches) above the pavement. Since the gun doesn’t touch the surface directly, the process is faster than extrusion but still delivers crisp, uniform lines for parking stalls and traffic lanes.
  • Spray: This is the quickest method. The spray gun sits 4–5 inches above the surface, allowing contractors to cover large areas efficiently. Spray application is commonly used for big commercial parking lot striping jobs where minimizing downtime and maximizing speed is key.

Is ADA handicap signage required in commercial and industrial parking lots?

The requirement for handicap-accessible spaces depends largely on how the parking lot is used. For example, lots reserved exclusively for buses, trucks, delivery vehicles, law enforcement vehicles, or impound yards are generally exempt from ADA parking requirements. However, most public and commercial parking lots must include properly marked spaces, complete with ADA-compliant pavement markings and signage, to ensure accessibility for all users.

It’s also important to understand that ADA line striping and signage regulations can vary depending on local building codes and revisions. While the federal ADA sets minimum standards, your city or county may have additional rules regarding the number of spaces, pavement marking specifications, or the type of material used for signage and striping. For the most durable and compliant results, professional parking lot striping contractors can help ensure your job meets both ADA requirements and local codes, saving you from costly maintenance or rework later.

Established in 1985, DRYCO was originally a commercial paving contractor and now includes concrete and fencing divisions. DRYCO works with property managers, general contractors, and commercial businesses to keep their most valuable assets protected and maintained.

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Locations

Bay Area Headquarters
42745 Boscell Road Fremont, CA 94538
Local: (510) 438-6500

Central Valley Headquarters
9390 Elder Creek Rd. Sacramento, CA 95829
Local: (916) 381-8033

Locations We Serve

800-378-2177

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