The following procedures should be followed for optimum primer performance.

• Clean the surface with a brush and remove any dirt, debris, flashing, or concrete high points, which could keep ConSeal primer from adhering to the concrete.
  • A joint primer (i.e. CS-50 or CS-75) is to be applied to improve sealant adhesion. CS-50 is a solvent based primer that can be applied days or weeks in advance. CS-75 is a water based primer that dries tacky and must be applied at the time of the installation.
  • Allow the primer to dry before placing sealant. The primer will normally be dry to the touch (CS-50) or tacky (CS-75) within 15-20 minutes. (Note: CS-50 primer can be applied at the job site or at the plant several days in advance of the set.)
• Applying CS-50: Do not use this material near an open flame or where the potential for a spark could ignite the vapors within the product. CS-50 can be applied to the area being primed using a standard paint brush or paint roller.
• Applying CS-75: ConSeal CS-75 is an adhesive primer that dries tacky. It is water based and does not contain volatile or flammable components. Open the pail and apply the product using a standard paint brush or paint roller.
• Applying CS-300: Do not use this material near an open flame or where the potential for a spark could ignite the vapors within the product. CS-50 can be applied to the area being primed using a standard paint brush or paint roller.

Disclaimer: This publication is to assist users to understand the proper use of ConSeal’s products. Contact ConSeal’s technical staff for installation instructions that meet your specific requirement. Concrete Sealants, Inc. does not warranty any improper use of its products.