Use clean water to thoroughly clean surface.

If concrete has curing compound or sealer present use C2 Remove™ to clean the surface.

If surface has dirt, grime, grease, tire marks present use C2 Degrease™ to clean it.

Once surface is clean mix C2 Safe Prep™ (1 part concentrate to 3 parts water) in a sprayer. Do not use 100% concentrate, may yellow concrete.

Apply generously using low-pressure spray (0.4-0.6 MPa), roller or stiff bristle masonry washing brush. Do not apply with high-pressure spray. Do not atomize.

Let C2 Safe Prep™ dwell on the surface 3-5 minutes. C2 Safe Prep™ will foam up white when reacting with concrete. Light scrubbing with stiff bristle brush will improve results. Do not allow C2 Safe Prep™ “dry into” the concrete. If will start drying, reapply C2 Safe Prep™

It is extremely important to thoroughly rinse off C2 Safe Prep™ and any dissolved contaminants with lots of fresh water. This ensures there is no residue left that could interfere with the penetration of hardener/densifiers or tints.

Use C2 Safe Prep™ only when grinding with metal diamonds and 50/100 resin. Do not use above 100 resin level.

Mix C2 Safe Prep™ (1 part concentrate to 3 parts water) in sprayer. Do not use 100% concentrate, may yellow concrete.

Apply liberally using low-pressure spray (0.4-0.6 MPa), in front of a grinder. Do not saturate. You do not want to create a slurry. Ensure concrete is dry once grinder passes over C2 Safe Prep™. This process can be continued at every step of metal grinding if needed.

This process should help with the following:

• Etches concrete prior to metals grinding floor, thus cutting concrete down faster.
• Ensures diamonds do not glaze over (allowing them to cut better) due to cures and other chemicals that may be present on concrete.