Custom Poured Concrete, Stone Textured, Hand-Cut & Beveled iOutdoor Tile Keystone Concrete Construction, Inc., realizes your time is valuable. I specialize in creating a custom project to fit your needs and style. Creative concrete projects that are constructed to last is what I promise and back up with a 5 year guarantee. Whether you are replacing old concrete or building the patio of your dreams, we have designed a system for installing concrete that separates us from the competition. Every job is installed on a bed of compacted gravel, 4.5" (minimum) of 4000 PSI concrete reinforced with 1/2" steel rebar and sealed upon completion. We are also producing decorative looks that are truly unique. Through stone texturing, coloring, cutting, beveling and sometimes even grinding, a custom look that is one of a kind can be attained. We also construct retaining walls, install and remove trees, landscape, hardscape, natural stone work and masonry repair. We also clean, restore and seal concrete. We pressure wash and seal with a 5 year SaltGuard Sealer.