SANDSTONE | Unilock Contractors
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Sandstone is an ethically sourced natural stone product which provides contractors with a quality alternative to pavers. Its low water absorption, freeze-thaw durability and flexural strength along with superior sizing and calibration, makes this natural stone stand out from the rest. Available in slabs, coping and step units to create a complete cohesive design.
Colors
Shape and size

12"X24"
300mm x 600mm x 22mm
11 7/8" x 23 5/8" x 0 7/8"

12"X24"
300mm x 600mm x 22mm
11 7/8" x 23 5/8" x 0 7/8"

12"X24"
300mm x 600mm x 22mm
11 7/8" x 23 5/8" x 0 7/8"

24"X24"
600mm x 600mm x 22mm
23 5/8" x 23 5/8" x 0 7/8"

24"X24"
600mm x 600mm x 22mm
23 5/8" x 23 5/8" x 0 7/8"

24"X24"
600mm x 600mm x 22mm
23 5/8" x 23 5/8" x 0 7/8"

24"X36"
600mm x 900mm x 22mm
23 5/8" x 35 1/2" x 0 7/8"

24"X36"
600mm x 900mm x 22mm
23 5/8" x 35 1/2" x 0 7/8"

24"X36"
600mm x 900mm x 22mm
23 5/8" x 35 1/2" x 0 7/8"

STEP 48"X16"
1,200mm x 150mm x 400mm
47 1/4" x 5 7/8" x 15 3/4"

STEP 48"X16"
1,200mm x 150mm x 400mm
47 1/4" x 5 7/8" x 15 3/4"

STEP 48"X16"
1,200mm x 150mm x 400mm
47 1/4" x 5 7/8" x 15 3/4"

STEP 72"X16"
1,830mm x 150mm x 400mm
72" x 5 7/8" x 15 3/4"

STEP 72"X16"
1,830mm x 150mm x 400mm
72" x 5 7/8" x 15 3/4"

STEP 72"X16"
1,830mm x 150mm x 400mm
72" x 5 7/8" x 15 3/4"

COPING W/ DL ROCK FACE
1,200mm x 50mm x 355mm
47 1/4" x 2" x 14"

COPING W/ DL ROCK FACE
1,200mm x 50mm x 355mm
47 1/4" x 2" x 14"

COPING W/ DL ROCK FACE
1,200mm x 50mm x 355mm
47 1/4" x 2" x 14"

COPING W/ DL SAWN
1,200mm x 50mm x 355mm
47 1/4" x 2" x 14"

COPING W/ DL SAWN
1,200mm x 50mm x 355mm
47 1/4" x 2" x 14"

Applications
Borders and Accents
Residential Pedestrian
Step
Recommended Equipment
Unilift
Mini Ex Lifter
2 Man Lifter
Technical information
  • Laying Patterns
  • Packaging
  • Things to know
  • Cross Sections
Select category
Laying Patterns
  • Laying Patterns
  • Packaging
  • Things to know
  • Cross Sections
24"X24" COPING W / DL SAWN 24"X36" COPING W / DL ROCK FACE STEP 72"X16" 12"X24" STEP 48"X16"
Units per Sq Ft0.250.210.170.14 - 0.5 -
Units per Crate401830124906
Lbs per Unit47.76121.2571.64180.78644.8523.88429.9
Sq Ft per Unit44.6767 - 2 -
SQFT per Crate1608418084 - 180 -
Lbs per Crate1910.42182.552149.22169.322579.3821492579.38
Lin Ft per Unit - Soldier - - - - 6 - 4
Soldier Lnft per Crate - - - - 24 - 24
FcFt per Crate - - - - 32 - 32
THINGS TO KNOW

NATURAL STONE - SANDSTONE

Installation Manual – For complete installation information, download the manual here.

Over Concrete Installation – Sandstone must be installed on a stable base. The best way to achieve this is to mortar the units on to a poured concrete pad - preferably a new concrete pad, although existing concrete can be used. It is recommended that you have a minimum 4” of ¾” crusher run gravel under the pad for support and drainage, (use any road base gravel in accordance with ASTM-D2940) compacted to 98% Standard Proctor Density (SPD).

Special Notes: Concrete Direct Overlay –

  1. Concrete integrity – concrete must be in good condition, and not crumbling
  2. Drainage slope – concrete below must be sloped away from all buildings and structures
  3. Base drainage - the area below the concrete must not be subject to frost movement
  4. Jointing – Mortar joint recommended

Alternative Permeable Base – Sandstone may also be installed on a 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.)

Alternative Permeable Bedding Course – 1” thick of 1/8” clear open-graded chip stone – (ASTM No. 8 or 9) screeded over base.

Water Proofing

- When installing over a concrete pad, waterproofing the sandstone and the concrete pad is an important procedure to prevent discoloration of the sandstone. A bond/slurry coat should be brushed onto the concrete pad prior to applying the mortar bedding. Apply the same bond coat to the backs of each sandstone unit before placing.

- When installing over a permeable base, you only need to apply the slurry coat to the back of the sandstone.

Handling – Exercise caution when handling this product, as contact between its zero-bevel edges may cause damage.

Edge Restraint - Always install an edge restraint around the perimeter of any paver installation not restrained by building structures. “Spike in” edge restraints come in plastic and various metals and work well for most applications. A concrete curb or a “sub-surface concrete wedge” can also be installed to retain the edge.

Cleaners – Unilock has partnered with United Stonecare, a UK company with over 30 years experience in the field of specialized cleaner and sealer products for natural stone. View products here: https://www.unicare-products.com/.

Download Technical Sheet
HERE'S WHAT
CONTRACTORS ARE
SAYING
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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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