CONCORD WALL™ | Unilock Contractors
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After many years of being the go-to residential concrete wall product for contractors across North America, Concord Wall has earned its place as one of the best designed modular walls on the market. Whether you’re building low planter walls or a 16 foot high wall holding up your client’s swimming pool, Concord Wall delivers on both appearance and structural capacity. ConcordXL is a slightly longer block which boosts installation productivity especially when a UniLyft is used. High wall engineering is provided.
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Shape and size

COPING 24"
600mm x 75mm x 300mm
23 5/8" x 3" x 11 7/8"

COPING 24"
600mm x 75mm x 300mm
23 5/8" x 3" x 11 7/8"

CORNER
200mm x 150mm x 300mm
7 7/8" x 5 7/8" x 11 7/8"

CORNER
200mm x 150mm x 300mm
7 7/8" x 5 7/8" x 11 7/8"

WEDGE CAP
248mm x 86mm x 330mm
9 7/8" x 3 1/2" x 13"

WEDGE CAP
248mm x 86mm x 330mm
9 7/8" x 3 1/2" x 13"

XL WALL
400mm x 150mm x 300mm
15 3/4" x 5 7/8" x 11 7/8"

XL WALL
400mm x 150mm x 300mm
15 3/4" x 5 7/8" x 11 7/8"

Applications
Fire Features
Garden Walls
Outdoor Kitchen
Pillars
Structural Wall
Water Features
Recommended Equipment
Unilift
Technical information
  • Packaging
  • Things to know
  • Cross Sections
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Packaging
  • Packaging
  • Things to know
  • Cross Sections
XL WALL CORNER WEDGE CAP COPING 24"
Layers per Bundle438 -
Units per Bundle321896 -
Units per Layer86122
Units per FcFt1.51.21.50.52
Lbs per Layer604.75273.33318290
Lbs per Bundle2419819.992544 -
Lbs per Unit75.5945.5626.5145
FcFt per Layer5.33583.88
FcFt per Bundle21.331564 -
FcFt per Unit0.670.830.671.94
Per Bundle Section - - - 2
Lin Ft per Bundle - Sailor - - - 64
Lin Ft per Layer - Sailor - - - 8
THINGS TO KNOW

Concord Wall™

Concord Wall is the most versatile residential and commercial retaining wall block on the market today. Use Concord Wall to construct projects from low walls to high walls.

Applications – Design and build projects such as planters, steps, grill islands, pillars, seat walls and water features. Can be used for straight and curved installations (Radius 5’ is the tightest radius).

Capacity – Gravity walls up to 39” (1m). Geogrid reinforced walls up to 20 ft. (6.1m).

Recommended Base Stabilization – one layer of DriveGrid™ stabilization grid between subgrade and base material. Use under Standard Base or Permeable Base.

Standard Base – Min. 6” – 8” of ¾” Crusher Run gravel (any road base standard in accordance with ASTM-D2940) compacted to 98% Standard Proctor Density (SPD).

Alternative Permeable Base – Min. 6” – 8” of ¾“ clear open-graded stone compacted to achieve full particle lock-up and consolidation. (Clear open-graded does not compact but does consolidate slightly by rattling the particles together).

Leveling – Leveling retaining wall blocks directly on top of gravel is tedious and generally does not yield the best results. U-Grip Base units or universal base pads are recommended under all Unilock walls for improved accuracy and speedier installation. Additional benefits include long term structural integrity and an overall better appearance. Poured concrete leveling pads, reinforced with rebar, are also a great way to accomplish leveling, particularly for larger installations. You must ensure that the concrete is poured and finished perfectly in order to achieve a good visual appearance.

Connection – features a tongue and groove connection. Use appropriate concrete adhesive for connection between units where the key has been removed or for corners. Always read adhesive manufacturers’ directions prior to gluing.

Handling – No specific handling instructions.

Coping - This wall requires coping. Choose a manufactured coping such as Unilock Universal Coping or any of our natural stone coping options. Install with tight joints or 3/16” gap between units and amend with an exterior latex caulking. Cutting may be required; a diamond blade saw is required to cut coping properly. Glue all coping using a specially formulated concrete adhesive that is strong and will not break down over time. Always read adhesive manufacturers’ directions prior to gluing.

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HERE'S WHAT
CONTRACTORS ARE
SAYING
Why Unilock products are top tier

Dave Caroselli from Shearer Patio & Landscape Services explains why being creative in the hardscape industry is something that he enjoys and why he feels that Unilock product is top tier in the industry. He also talks about how the UniLyft system has helped him efficiently complete a project with speed and precision.

Dave Caroselli
Shearer Patio & Landscape Services
Unilock products and service – best in the industry

Leon Raber from Creative Hardscapes talks about the quality and innovation of the Unilock product, and the wide range of color tones available. He also explains how he is most impressed with the contractor service provided by Unilock, and how the support makes him feel like family.

Leon Raber
Creative Hardscapes
Tournoux Landcare on why they choose Unilock

Zack Tournoux, one of the owners of Tournoux Landcare Service, shares why they love Unilock paving stones and walls: Top tier products, exceptional catalog (magazine), great working relationship with Territory Manager.

Zack Tournoux
Tournoux Landcare Service
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