ROMANSTACK™

ROMANSTACK^trade;

The antiqued, split face of RomanStack makes it a more rugged-looking alternative to Split ‘n Stack an economical, light-duty garden wall system for planters and borders. With a rock face textures on both sides, it can be also be used on two sided structures like firepits. A single size wedge unit makes it suitable for straight or curved applications.

Request a contractor Request a catalog

array(3) { [0]=> array(20) { ["Colour"]=> string(3) "288" ["Colour_Description"]=> string(6) "SIERRA" ["Effective_Date"]=> string(0) "" ["Discontinued_Date"]=> string(0) "" ["Colour_Hex_Code"]=> string(6) "8B7258" ["Line_No"]=> string(5) "40000" ["Swatch_Commercial_Picture"]=> int(69742) ["Swatch_Picture"]=> int(69736) ["Swatch_File_Name"]=> string(27) "RomanPisa_Sierra_Swatch.jpg" ["Grey"]=> string(4) "true" ["Brown"]=> string(4) "true" ["Beige"]=> string(4) "true" ["Black"]=> string(5) "false" ["White"]=> string(5) "false" ["Red"]=> string(5) "false" ["Plant_of_Manufacture"]=> string(0) "" ["Component_Picture"]=> array(1) { [0]=> array(5) { ["Component"]=> string(3) "060" ["Component_Description"]=> string(14) "COPING TAPERED" ["Colour"]=> string(3) "288" ["Colour_Description"]=> string(6) "SIERRA" ["Picture"]=> int(40066) } } ["Component_Picture_Collage"]=> array(0) { } ["finish"]=> string(0) "" ["finish_count"]=> int(1) } [1]=> array(20) { ["Colour"]=> string(3) "251" ["Colour_Description"]=> string(7) "GRANITE" ["Effective_Date"]=> string(0) "" ["Discontinued_Date"]=> string(0) "" ["Colour_Hex_Code"]=> string(6) "8A8D8F" ["Line_No"]=> string(5) "20000" ["Swatch_Commercial_Picture"]=> int(69741) ["Swatch_Picture"]=> int(69734) ["Swatch_File_Name"]=> string(28) "RomanPisa_Granite_Swatch.jpg" ["Grey"]=> string(4) "true" ["Brown"]=> string(5) "false" ["Beige"]=> string(5) "false" ["Black"]=> string(5) "false" ["White"]=> string(5) "false" ["Red"]=> string(5) "false" ["Plant_of_Manufacture"]=> string(0) "" ["Component_Picture"]=> array(1) { [0]=> array(5) { ["Component"]=> string(3) "060" ["Component_Description"]=> string(14) "COPING TAPERED" ["Colour"]=> string(3) "251" ["Colour_Description"]=> string(7) "GRANITE" ["Picture"]=> int(40064) } } ["Component_Picture_Collage"]=> array(0) { } ["finish"]=> string(0) "" ["finish_count"]=> int(1) } [2]=> array(20) { ["Colour"]=> string(3) "207" ["Colour_Description"]=> string(5) "RIVER" ["Effective_Date"]=> string(0) "" ["Discontinued_Date"]=> string(0) "" ["Colour_Hex_Code"]=> string(6) "7C7768" ["Line_No"]=> string(5) "30000" ["Swatch_Commercial_Picture"]=> int(69740) ["Swatch_Picture"]=> int(69738) ["Swatch_File_Name"]=> string(26) "RomanPisa_River_Swatch.jpg" ["Grey"]=> string(4) "true" ["Brown"]=> string(4) "true" ["Beige"]=> string(4) "true" ["Black"]=> string(5) "false" ["White"]=> string(5) "false" ["Red"]=> string(5) "false" ["Plant_of_Manufacture"]=> string(0) "" ["Component_Picture"]=> array(1) { [0]=> array(5) { ["Component"]=> string(3) "060" ["Component_Description"]=> string(14) "COPING TAPERED" ["Colour"]=> string(3) "207" ["Colour_Description"]=> string(5) "RIVER" ["Picture"]=> int(40065) } } ["Component_Picture_Collage"]=> array(0) { } ["finish"]=> string(0) "" ["finish_count"]=> int(1) } }

Colors

OLD OAK

manufactured with unilock technology:

enduracolor
easyclean
colorfusion

BURNT CLAY

manufactured with unilock technology:

enduracolor
easyclean
colorfusion

BASALT

manufactured with unilock technology:

enduracolor
easyclean
colorfusion

BURGUNDY RED

manufactured with unilock technology:

enduracolor
easyclean
colorfusion

Shape and size

Sold individually

XL
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

Sold in a bundle - not sold separately

LARGE RECTANGLE
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

SQUARE
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

SMALL RECTANGLE
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

Sold individually

XL
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

Sold in a bundle - not sold separately

LARGE RECTANGLE
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

SQUARE
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

SMALL RECTANGLE
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

Sold individually

XL
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

Sold in a bundle - not sold separately

LARGE RECTANGLE
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

SQUARE
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

SMALL RECTANGLE
100mm x 250mm x 70mm
3 7/8" x 9 7/8" x 2 3/4"

Technologies

Classic

Our budget-friendly, Unilock Classic pavers and walls are manufactured to exceed as ASTM standards for quality and strength. Available in classic shapes and styles, these products utilize a traditional product mix of large and small aggregates, that is consistent from top to bottom, with color mixed throughout.

Our technologies

Get a FREE Estimate

Working with a Unilock Authorized Contractor for your project means working with the best of the best.

Discover our Catalog of Dreams

Browse hundreds of ideas for inspiration. Plan your dream outdoor space today, don’t wait.

Download a Project Planning Guide

Starting a new project is exciting! Download the project planning guide for tips and advice.

Technical info

Information

romanstack^™

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

Applications – Design and build projects such as planters, seat walls and fire pits. Can be used for straight and curved installations. (Minimum Outside Radius 29”’)

Capacity – Gravity walls up to 24” (.5m).

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. Use the RomanStack Coping or use any other coping that Unilock manufactures. Cutting may be required. Install with tight joints or gap 3/16” and amend with an exterior latex caulking. 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.

Unit Thickness (mm)

Layers per Bundle

FcFt per Bundle

FcFt per Layer

FcFt per Unit

Units per Bundle

Units per Layer

Lbs per Bundle

Lbs per Layer

Lbs per Unit

COPING TAPERED

100

5.17

0.22

144

2,356.85

392.81

16.37

Knowledge
Center

Top Trends for Outdoor Spaces

The outdoor season is never long enough, is it? Homeowners are always looking for ways to create outside spaces that are unique, comfortable and help them make the most of their sunny days and warm evenings.

A Greener Choice: Advantages of Permeable Paving

You may not think of concrete pavers as an eco-friendly product. But more and more homeowners are discovering the environmental benefits of permeable pavers. Not only are they durable and aesthetically pleasing, they can play an important role in the management and conservation of rainwater.

5 Tips to Make Your Paver Project Special

When designing your outdoor space, special elements and individual touches can take your paving project from typical to something that is the envy of the street. Here are some tips to bring the “wow” factor to your outdoor hardscaping design.

Learn

Call our toll-free number