Structurally Sound, Natural Beauty

RomanStack is the weathered counterpart to StackStone and features all the same colours and sizes but with a worn, chiselled appearance.  Its tongue and groove system ensures a tight interlock between each block, making RomanStack ideal for straight and curved garden walls. No matter how simple or complex your garden wall project is, RomanStack will be up for the task.

Wall Estimation Tool

Experience the new Wall Estimation Tool for RomanStack.  This free, easy-to-use Web Application allows you to quickly estimate your next Retaining Wall project in minutes, including all quantities of Wall Blocks, Corner Units, Cap Stones, and even Geogrid and backfill materials. The simple drawing interface makes it easy to lay your wall out and then generate a complete, professional report that can be used for costing or feasibility purposes.

Wall Estimation Tool

Wall Estimation Tutorial Video

This quick tutorial will guide you through the basics of designing your StackStone retaining wall using the Wall Estimation tool.

Note: This new Estimation tool is for costing and feasibility only. A Professional Engineer must always be retained to prepare a Final Design prior to bidding or construction. 

Sizes (H X W X D)

4 x 8/6 x 8 in
102 x 203/152 x 203 mm

4 x 8/6 x 8 in
102 x 203/152 x 203 mm

Advanced Corner
4 x 11/8 x 8 in
102 x 280/203 x 203 mm



Desert Buff

Sierra Grey

Every effort has been made to ensure accuracy in the colour representations found on this website. However, due to the natural characteristics of concrete, the manufacturing process and on-screen display, actual colours in the final product may vary from that shown.


DescriptionDimensionsUnit Size MMUnit Size INUnit Face Area M2Unit Face Area Sq FtUnit Weight LBPallet Row UnitsPallet Row Face Area M2Pallet Row Face Area Sq FtPallet UnitsPallet RowsPallet Face Area M2Pallet Face Area Sq FtPallet Weight LB
Standard H X W X D 102 x 203/152 x 203 4 x 8/6 x 8 0.02 0.22 18 24 0.5 5.35 120 2.48 26.75 2160 
Coping H X W X D 102 x 203/152 x 203 4 x 8/6 x 8 0.02 0.22 18 24 0.5 5.35 120 2.48 26.75 2160 
Advanced Corner H X W X D 102 x 280/203 x 203 4 x 11/8 x 8 0.02 0.22 27 12   48 0.99 10.7 1296 
ColoursItem No. StandardItem No. 12" CopingItem No. 12" Corner
Charcoal 103901 103902 104262 
Desert Buff 103924 103925 104266 
Sierra Grey 103919 103920 104264 


Garden Walls Application Icon

Garden Walls

Product Notes

Pallet Information

RomanStack Advanced Corner – 3 horizontal layers per pallet 
RomanStack Standard and Coping- 6 horizontal layers per pallet
A $35.00 returnable pallet fee will be charged to any bundle of RomanStack.  

Unit of Measure

The Unit of Measure for Quarry Stone is Each.

Order Considerations

Contact your local Barkman sales representative for information on special or custom order products in terms of minimum production cycles required. 


To calculate pieces required, multiply the wall length, in feet, by 1.72. This will give you the number of pieces required per layer. Then multiply this by the number of layers to determine total quantity required. Please note that 1.72 is the multiplier used for both the standard and coping units. It’s recommended to go a maximum of 2’ height. Minimum inside diameter of 42″ (23 pieces)For information on wall heights, consult the product installation guide and technical specifications. Check your local building codes and consult a professional engineer when required.