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CONCORD WALL

The built in setback design of Concord Wall automatically forms the correct slope for retaining walls, making it a trusted favorite of designers for decades. Tapered units in a 6” (15cm) height can be used to build highly stable retaining walls in straight or curved applications, and are a popular choice for accompanying steps. For faster construction and a more linear look, XL units are also available, double the length of the standard unit. Build gravity walls up to 2.5ft (1m) or grid reinforced walls up to 25ft (7.5m) high under typical conditions. Wedge cap units and 24” (60cm) coping/step tread units are also available.

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CONCORD WALL

The built in setback design of Concord Wall automatically forms the correct slope for retaining walls, making it a trusted favorite of designers for decades. Tapered units in a 6” (15cm) height can be used to build highly stable retaining walls in straight or curved applications, and are a popular choice for accompanying steps. For faster construction and a more linear look, XL units are also available, double the length of the standard unit. Build gravity walls up to 2.5ft (1m) or grid reinforced walls up to 25ft (7.5m) high under typical conditions. Wedge cap units and 24” (60cm) coping/step tread units are also available.

Colors
Applications
Fire Features
Garden Walls
Grill Islands
Pillars
Step
Water Features
Shape and size
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COPING 24"
600mm x 75mm x 300mm
23 5/8" x 3" x 11 7/8"
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COPING 24"
600mm x 75mm x 300mm
23 5/8" x 3" x 11 7/8"
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COPING 24"
600mm x 75mm x 300mm
23 5/8" x 3" x 11 7/8"
img
CORNER
200mm x 150mm x 300mm
7 7/8" x 5 7/8" x 11 7/8"
img
CORNER
200mm x 150mm x 300mm
7 7/8" x 5 7/8" x 11 7/8"
img
CORNER
200mm x 150mm x 300mm
7 7/8" x 5 7/8" x 11 7/8"
img
WEDGE CAP
248mm x 86mm x 330mm
9 7/8" x 3 1/2" x 13"
img
WEDGE CAP
248mm x 86mm x 330mm
9 7/8" x 3 1/2" x 13"
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WEDGE CAP
248mm x 86mm x 330mm
9 7/8" x 3 1/2" x 13"
img
XL WALL
400mm x 150mm x 300mm
15 3/4" x 5 7/8" x 11 7/8"
img
XL WALL
400mm x 150mm x 300mm
15 3/4" x 5 7/8" x 11 7/8"
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XL WALL
400mm x 150mm x 300mm
15 3/4" x 5 7/8" x 11 7/8"

Product Gallery

Unilock Concord Wall antiqued fire feature and wall
Unilock Concord Wall antiqued fire feature and wall
Unilock Concord Wall antiqued fire feature, wall, steps and entrance
Unilock antiqued Concord Wall
Unilock antiqued Concord Wall
Colors
GRANITE
ALMOND GROVE
SIERRA
Pick a color
GRANITE
ALMOND GROVE
SIERRA
Information
Information
Packaging
Downloads

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.

Per Bundle SectionLin Ft per Bundle - SailorUnits per LayerUnits per FcFtLbs per LayerLbs per UnitLin Ft per Layer - SailorFcFt per LayerFcFt per UnitLayers per BundleUnits per BundleLbs per BundleFcFt per Bundle
COPING 24"WEDGE CAPXL WALLCORNER
Per Bundle Section2 - - -
Lin Ft per Bundle - Sailor64 - - -
Units per Layer21286
Units per FcFt0.521.501.501.20
Lbs per Layer290318604.75273.33
Lbs per Unit14526.5075.5945.56
Lin Ft per Layer - Sailor8 - - -
FcFt per Layer3.8885.335
FcFt per Unit1.940.670.670.83
Layers per Bundle - 843
Units per Bundle - 963218
Lbs per Bundle - 25442419819.99
FcFt per Bundle - 6421.3315

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