No heavy scraping or chipping of residual concrete is needed, so there's less chance of damaging the panels face. Apply Release Agent Simpson high density overlay panels are not factory release coated. Lightly coat panels prior to first pour and before each subsequent pour with a chemically reactive release agent that will not bond with, stain, or adversely affect concrete surfaces. This makes stripping and cleaning easier and provides more uniform concrete surfaces an all pours. Follow the manufacturer's recommendations for application.
Release agents have a significant influence upon the finished concrete surface.
Castor oil or forming release agents containing castor oil are not recommended. Pouring and Vibrating MultiPour HDO panels are highly resistant to abrasion and impact. However, as with any surface, they can be damaged through improper use. Rate of pour should be limited to that assumed in the design of the form. The use of rubber-tipped vibrators is recommended, and care should be exercised not to damage form faces during vibration.