Semma

Featuring a 6″ x 16″ double-sided design, the Semma segmental retaining wall offers tapered sides and a unique mechanical interlock that supports both vertical and sloped structures. Semma is renowned for its exceptional shear strength, achieved through direct block-to-block contact, and its innovative void fill interlock system, which utilizes a four-cored design filled with contractor-grade gravel. Additionally, a ½” bonding gap aids in the even distribution of joint pressure. Each layer of the Semma wall incorporates an integrated Coin, providing an effective solution for constructing raised patios with a structural base and a decorative parapet on top. Complement or enhance your wall with Semma pillars, ideal for adding dramatic lighting features. While the polished finish is exclusive to Canada, Semma remains a standout in the dry cast collection for its versatility and strength.