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Olde Quarry

Brand Unilock
Material Concrete Wall Stone
Colors Earth Tones, Grays
Type Wall


With an antiqued patina similar to Brussels Dimensional Stone, but in a larger scale format, Olde Quarry reflects the cues of quarried stone, and brings timeless warmth to any project. With plastic connectors that create interlocking between rows, the 3-stone random bundle can be used to build straight or curved walls, planters, steps, pillars, fire features, grill islands and more. 

The unusual weathered appearance of Olde Quarry makes it an alternative to natural stone products. Whether your plans call for constructing a curved wall, seat wall, planters, steps, edging or even an outdoor kitchen, the look will be commanding and impressive with the antiqued finish of Olde Quarry.



Sold Individually

Coping Tapered Corner
12" x 3" x 12" 11 7/8" x 4 1/2" x 9"
305cm x 75cm x 305cm 300cm x 114cm x 230cm

Random Bundle

15" Unit 12" Unit 9" Unit
15" x 4 1/2" x 9" 12" x 4 1/2" x 9" 9" x 4 1/2" x 9"
380cm x 114cm x 230cm 305cm x 114cm x 230cm 230cm x 114cm x 230cm


Things to Know

Applications – Design and build projects such as planters, steps, grill islands, pillars, seat walls and water features. Olde Quarry allows for the construction of both straight and curved applications.

Capacity – walls up to 2 ft. (60 cm) in height and hardscape features up to 4 ft. (1.2m)

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 – Mechanical (use plastic insert provided) or adhesive. Make sure surface is clear of dust before gluing. Always read adhesive manufacturers’ directions.

Handling – No specific handling instructions.

Coping - This wall does not require coping, but coping is generally used to complete the installation visually. 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.

Stones & Bundling Face Ft Per Lin Ft Per Units Per Per Bundle Lbs Per
Bundle Unit Bundle Unit Bundle Face Feet Layers Sections Unit Bundle
Wall Bundle 33.75   90   90   6 5   3125
15" Unit 14.07 0.47 37.4 1.25 30 2.13     45  
12" Unit 11.25 0.38 30 1 30 2.67     35  
9" Unit 8.43 0.28 22.62 1.75 30 3.57     24  
Corner Unit 30.89 0.39 82.4 1.03 80 2.59 5 4 39 3150
Coping Unit 24 0.25 96 1 96 4 8 4 32 3039


ASTM C 1372 Standard Specifications for Dry-Cast Segmental Retaining Wall Units

Unilock meets and exceeds:

  • C140 for Absorption and Compressive Strength > 3000 PSI
  • C1262 for Freeze Thaw Durability <1% mass loss
  • C1372 Overall dimensional variations permissable for width, height and length ± 1/8” (±3.2mm)
  • NCMA Zone 3 Recommendations for de-icing salt exposure with Compressive Strength >5500 psi

Test results available upon request



Materials & Resources: LEED V4:

Building Product Disclosure and Optimization

Sourcing of Raw Materials – Sourcing of Raw Materials and Extraction • 1 point

Sourcing of Raw Materials – Leadership Extraction Practices • 1 point

Material Ingredient Reporting – Material Ingredient Reporting • 1 point

Material Ingredient Reporting – Material Ingredient Optimization • 1 point

Environmental Product Declaration • 1 point



Olde Quarry™ HPD


Specification – Non-Engineered Wall

Specification – Engineered Wall

For more information on specifications for Olde Quarry, please contact your local representative.

Important Information


Note: Structural retaining walls greater than 2' high require professional engineering.

Based on manufacturer assigned sales territories, product availability may vary by location.

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