Use reaction times guide below to determine amount of Prime Kat or Kick Fast catalyst to add to the 920. One 33 oz. bottle per 5 gallons of 920 equals 5% mix ratio. Two 33 oz. bottles is the maximum dose at 10%. Only mix the amount of material that can be used within 12 hours.
Thoroughly mix materials using a low speed drill with a mixing paddle. Hand mixing will not be sufficient and will result in underperforming material. Once catalyst has been added, the 920 will react upon contact with moisture