Retaining Walls Serving the Seattle, Bellevue and Kirkland Our retaining wall installation service provides practical, cost-effective, innovative design and installation. W e offer many type of wall materials i nclude Segmental Walls, Rockery Walls, and Dry-Stacked Walls. Many flexible designs can accommodate a variety of site conditions and project sizes. Whether you need a small garden walls or a large structural retaining wall, we offer a large selection of both block walls and natural stone walls in many shapes, sizes and colors. None of our gravity wall systems are used mortar; these are dynamic structures that can move with expanding and contracting soils through the seasons. Water and air circulation are actually able to move through the walls which releases hydraulic pressure behind them. It also inhibits freezing damage that can occur if water is trapped inside the wall. Segmental Wall units are engineered to be self-aligning and use a patented interlocking system that molds them to each other. Rockery Walls and Dry-Stacked Walls units are constructed with building techniques, gravity and friction to hold them in place. Most of gravity walls systems can be created straight or curved, corners, steps. The best of all, they are environmentally sound. For product availability or an estimate, please take a look at the  Segmental Walls Selections