How to Overlay Cracking in a Bituminous Parking Garage

Over time and with inclement weather conditions, bituminous parking garages can develop cracks. The damaged parking garage looks unsightly and allows water to drain through the cracks, speeding up erosion. Overlaying your parking garage involves coating it in new layer of bitumen that's 1.5 to 2.5 inches thick. The overlay will fill cracks and create a smooth surface and improve drainage and strength. Fix cracks prior to overlaying with sealant or the cracks will show through.

Router
Broom
Sealant
Bitumen heater
Timber strips
Overlay primer
Paintbrush
Buckets
Bitumen overlay mix
Shovels
Rakes
Roller

Instructions

- 1
  Seal the cracks in the parking garage with a rubberized sealant. Use the router to clean out cracks that are wider than 1 inch. Use the broom to sweep the surface and cracks to remove all loose debris.
- 2
  Heat the sealant to the lowest temperatures that are recommended by the manufacturer. Pour the sealant into the cracks. Use a shovel to remove excess sealant and make the surface even.
- 3
  Use old strips of waste timber to create a border on the sides of the parking garage. This will prevent excess bitumen from flowing over the sides and create neat edges.
- 4
  Apply overlay primer using the paintbrush. Leave the primer to dry completely. Wait for the perfect weather. Temperatures of around 70 degrees Fahrenheit are ideal and there should be no rain for at least three days.
- 5
  Heat the bitumen to the temperature recommended by the manufacturer. Shovel the hot bitumen onto the surface of the parking garage.
- 6
  Use the back of the rake to create an even layer on top of your parking garage. Compact the bitumen with a roller. Use a roller with water running over it to cool the bitumen as you go. Cordon off the parking lot and leave it for at least three days. The longer you are able to leave it, the better.

How to Form a Standing Metal Roll Seam

Log Cabin Wood Exterior Treatment

Exterior Home Repair