Code Black uses the following 6-step process to seal coat asphalt surfaces.
- JOB INITIATION
- Review job plan. Ensure all interested parties are aware of the work schedule in advance.
- Apply a water based herbicide to vegetation in or around the parking lot or driveway, as necessary, several days before the work period.
- Set up safety perimeters to direct traffic and pedestrians safely around the work site.
- Use a power trimmer and/or hand tools to trim vegetation growth and/or edge grass around the perimeter of the surface, if needed.
- Prepare the asphalt pavement with a job specific combination of hand sweeping, power blower sweeping and/or power washing to clean the surface of the asphalt.
- Clean cracks 1/8 inch wide or larger using machinery with a power wire wheel, called a Gazor, to eliminate ground in dirt and debris.
- Clean and prime the oil and grease stains to ensure the sealer (a water-based product) will adhere to these areas.
- Apply tack coat (a sealer adhesion promoter) where needed.
- Apply the liquid form of hot rubber crack sealant to cracks that are large enough to accept and hold it.
- Leave cracks less than 1/8 inch wide untreated because the pavement sealer will adequately fill them.
- Trim out the perimeter of the area to be sealed by hand (and any objects within the area) to prevent sealer from coating approaches, curbs, sidewalks, buildings or other objects.
- Use sealer custom mixed for the application at hand, and within the limits of the manufacturer's specifications.
- Apply sealer with techniques appropriate for the job being done: spraying with a wand, manual application or a combination.
- Barricade entrances and walkways to prevent vehicle and pedestrian traffic from using the area.
- Allow the sealer to cure. A minimum of 12 hours is required to cure one coat of sealer (weather conditions, especially humidity, impact the duration of the curing time). If a second coat of sealer is applied a few hours after the first coat, a minimum curing time of 24 hours is recommended.
- Return to the job site to inspect the results.
- Remove caution tape, traffic cones and/or barricades.
- Record job notes, follow up with customer to confirm satisfaction and schedule a courtesy maintenance reminder.