Outdoor Living Mastery 2025

Techo Bloc Semma Retaining Wall Blocks

A 6″ x 16″ double-sided segmental retaining wall, with tapered sides and an independent mechanical interlock, allowing for a vertical or battered wall. Semma also has tremendous shear strength (block to block contact), void fill interlock (4 cored system with contractor gravel-filled cores), and a ½” bond for joint dispersion. Semma wall, with an integrated Coin on every layer, makes a great solution to the raised patio quandary: building a structural wall and topping it with a parapet (free-standing wall). Use the Semma pillars to finish or add drama or light features to your wall. Polished finish only available in Canada. Semma is part of the dry cast collection.

 

See more details

Weight 57.9 lbs

Begin Your Project journey at our showroom

Visit our 5,000 square feet indoor hardscape materials showroom in New Holland, PA where you will find hardscape layouts, outdoor kitchen ideas, patio paver designs, patio lighting features, and our high-quality patio furniture all on display. Find the colors and textures that best complement your style, and a guide to help you choose the best combinations for your hardscape project in New Holland, PA. Here you will find hundreds of hardscape materials on display along with a full display of backyard and patio ideas.