- RKC Home Page Increte Systems Stamped Concrete Stain-Crete Penetrating Stain Thin-Crete Stamped Overlay Stone-Crete Wall System Color-Crete Integral Coloring Spray-Deck System Overlay Custom Countertops and Pre-Cast Awards Company Profile Contractor Opportunities Contact Us RKC Increte Systems is the premiere contractor for decorative concrete products and hardscapes in the Greater Cincinnati ...www.rkcincrete.com