D.C. Kerckhoff Company provides a wide selection of cast stone architectural concrete pavers and hardscape products for landscape design and hardscape contractors. Whether for a hotel courtyard, country club pavilion, or private pool and patio, “Kerckhoff Stone” pavers create a warm, solid look that complements the building they surround. Our pavers, stair treads, benches, balustrades, columns, architectural trim, planters and spectacular entryways are constructed to be a low maintenance solution. All exceed the ASTM (American Society for Testing of Materials) requirements for strength, durability, and the non-absorption of water. Our Precast Keystone “Kerckhoff Stone”® Pavers with a design standard of 6,500 P.S.I. are available in standard sizes from simple 12” squares up to 24” squares, and custom sizes or patterns to meet the requirements of your project designer in 28 days. Explore our products below to view all details and access technical files and an easy order request form.