3.0 Recommended Mix Design

• 3.1 Bulk STAR-SEAL pavement sealer shall be diluted at a 25-30 % with clean potable water.
• 3.2 Three (3) lbs. sand per gallon of bulk sealer shall be added to STAR- SEAL pavement sealer for each coat (equaling 6 lbs sand per gallon bulk applied to the surface).
• 3.2.1 Sand Slurry Preparation
  • Add the required amount of water to the sealer in the mixing tank and mix thoroughly.
  • Keep the mixer running at a moderate rate.
  • Add the sand in a steady stream of about one (100 lbs. ) bag/min.
  • After adding all the sand, close the lid of the mixing tank and raise the speed of the mixer to "high" setting.
  • Mix for ten minutes to allow the contents of the tank to mix thoroughly and break any sand clumps.
  • Reduce the agitator speed to moderate setting and keep running. If the mixer is shut off during transport to the job site, it must be restarted and contents mixed for at least 10 minutes before the application begins. Keep the agitator running during the entire application period.

4.0 Surface Preparation

• 4.1 Clean the surface thoroughly to remove all foreign debris (dirt, gravel, silt, etc.) using air blowers or by flushing with water. Embedded dirt and silt shall be removed with steel bristle hand brooms.
• 4.2 Treat all grease and oil spots by scraping off the excess oil and dirt away with a wire bristle and coat with an oil spot primer.
• 4.3 Install cold patch material to minor potholes.
• 4.4 Seal cracks with crack sealant according to specification

5.0. Crack Sealing

• 5.1 For best results, the sealant should be applied when the surface temperature exceeds 40F.
• 5.2 Routing - If applicable.
• 5.2.1 Cracks are routed to a minimum width of 3/8 in. and a minimum depth of 1/2 in.
• 5.3 Cracks or joints should be cleaned to be free from all foreign debris using mechanical wire brushes.
• 5.4 To ensure dryness of the crack and to guarantee adhesion of the sealant to the crack wall, a heat lance using 3000F compressed air will be used.
• 5.5 Install backer rod when necessary to ensure seal.
• 5.6 Install crack sealant using pour pots or speed banders whichever is appropriate.5.7 Apply sand to surface of cracksealant in high traffic conditions so that no tracking will occur.

6.0 Method of Sealer Application

• 6.1 The agitator of the sealer tank should be kept on to keep the material in suspension at all times. The machine should be equipped with a fog bar to be used for pre-dampening if the pavement temperature exceeds 90 F.
• 6.2 Coat the edges first. Pour a continuous ribbon of STAR-SEAL mix along the pavement edge 6-12 inches from curbing.
• 6.3 Draw STAR-SEAL mix away from the pavement edge by pulling a squeegee or brush perpendicular through the ribbon of material at a slight angle. Walk parallel to the pavement edge. Repeat the process in reverse direction pulling the excess material toward the center of the pavement. For best results use squeegees followed by a brush.
• 6.4 After trimming (5.3) apply sealer over the remaining area using either a squeegee or spray application. A self-propelled machine that squeegees and brushes the sealer into the pores of the pavement is recommended but not always available.
• 6.5 Allow the first coat to dry sufficiently to take light traffic scuffing. It will take a few hours under ideal drying conditions (75-80 Deg. F. & 50% relative humidity).
• 6.6 After trimming (5.3) use machine with spray wand or spray bar apparatus that deposits the material according the coverage rates recommended for the specified job. The spray application will take out any squeegee marks and give a uniform appearance and is recommended for the second coat.
• 6.7 The completed application shall be allowed to cure at least for 24 hours and then tested for trafficability prior to opening for regular use.
• 6.8 Quantities of the material will vary according to porosity and texture of the pavement. The guideline quantities expressed as the amount of undiluted STAR-SEAL are as below:
  • 1st coat - 0.10-0.12 gal/sq.yd.
  • 2nd coat - 0.06-0.08 gal/sq.yd.

7.0 Striping

• 7.1 Materials
  • 7.1.1 Use STAR-BRITE heavy duty latex based paint. Allow the seal coat to dry at least 6-24 hours before striping. Refer to the Technical Data Sheet on appropriate traffic paint details.

• 7.2 Application
  • 7.2.1 The traffic paint shall be applied at an average rate of 400 L.F./gal.
  • 7.2.2 Beads, if applicable, shall be dispensed at a rate of 5-6 LBS./GAL. when required.
  • 7.2.3 All lines shall be chalked prior to striping to provide a uniform, neat layout.
  • 7.2.4 All lines are painted using an airless striping machine.