Routing
Our standard procedure is to mechanically rout cracks to a minimum of 3/4 inch wide and 3/4 inch deep to create a sufficient reservoir and new bonding surfaces for the sealant. Sealant that is 3/4 inch thick will withstand repeated cycles of 50 percent expansion and periodic expansion as great as 100 percent. Most cracks or joints will not move more than 50 percent throughout an average year.

Cleaning
Bergman crews clean and dry the routed cracks using air compressors with a minimum of 100 psi and heat lances with a minimum temperature of 2200 degrees. Hot-pour rubberized crack sealant will not adhere to dirty or wet surfaces and can be easily removed.

Sealing
We seal the cracks with a hot-pour polymer modified asphalt containing granulated tire rubber, plasticizers, and fillers. These sealants meet the following specifications" ASTM D3405 and AASHTO M301. They also exceed specifications ASTMD1190, AASHTO M173, and federal specification SS-S-164.