Criblock is a type of gravity retaining wall that constructs cells from materials like plastic frames precast concrete or timber. The stem is reinforced with steel bars placed vertically and horizontally and all cores in the blocks are filled with semi-fluid concrete known as grout. Related Image Cinder Block Walls Garden Retaining Wall Retaining Wall This is an extremely popular system offering benefits that include zero lot lines a vertical wall face and a. Concrete blocks for retaining walls . A concrete block retaining wall is the perfect solution to control erosion to eliminate a hard-to-mow slope to add a planting bed or to level an ideal patio area. Firth Keystone Retaining Wall System lightweight easy to handle and requires no special tools. The massive size of VERSA-LOK Brute240 pounds and 1-13 square feet face areamakes it the ideal solid solution for unreinforced walls to 8 feet. Concrete block retaining walls should not exceed four feet in height. We now offer