Nicolock Paving Stones and Retaining Walls, a division of Nicolia Industries, is a recognized industry leader and manufacturer of Hardscaping concrete products. Based in Lindenhurst, NY with manufacturing locations in North Haven, CT and Frederick, MD, Nicolock offers traditional and antiqued pavers, slabs, retaining wall blocks, and precast concrete products for residential and commercial construction needs. Nicolock also manufactures a variety of permeable pavers (SF-Rima, Eco-Ridge) and erosion control concrete grid pavers including Checker Block, a nationally-recognized steel reinforced grid paver. Nicolock offers hardscaping accessories including: polymeric sand, cleaners, sealants, edge restraints, separation fabric, and geogrid reinforcement