What is a segmental retaining wall?
A segmental retaining wall is a landscape wall system made from interlocking, dry-stacked concrete blocks that hold soil and grade changes without mortar or poured concrete.
Segmental retaining walls (SRWs) are built from manufactured concrete units stacked and locked together without mortar. The blocks interlock through mechanical features like clips, pins, or textured faces that key them together as the wall rises. Behind the blocks, landscape fabric and compacted gravel or drainage stone allow water to move through the system, preventing hydrostatic pressure buildup that can destabilize a wall.
SRW systems differ from poured concrete walls in method and flexibility. Where a poured wall requires formwork, concrete delivery, and curing time, segmental blocks arrive ready to stack and can be installed faster in varied site conditions. Unlike natural stone walls, which demand skilled stonemasonry and custom fitting, SRW blocks are uniform and repetitive, speeding installation and reducing labor expertise requirements. SRWs also offer consistent appearance and predictable cost.
Common applications include residential grade separation, commercial site work, erosion control, and terraced planting beds across Connecticut landscapes. The dry-stack method makes SRWs repairable and adjustable after installation. Blocks are available in multiple colors, textures, and heights, allowing designers to match site aesthetics. When installed with proper drainage and compaction, SRW systems provide durable retaining solutions for residential and commercial properties. Hardscaping and masonry providers throughout Connecticut specialize in SRW design and installation.