As you explore PolyRock™ on our website, you’ll find a range of edging sizes to fit your project. Our Brick is the most compact at 2.25” high, followed by our Block at 6.5”, and our Block XL at 9.5”. One of our most frequently asked questions is “Can you combine or connect different sizes?”
This guide explains everything you need to know about combining PolyRock™ Bricks and Blocks to design and customize your space.
Why We Don’t Recommend Connecting Different Sizes Directly
Technically, you could connect a Brick and a Block, but the height difference creates an uneven transition that disrupts the clean, intentional look of your design. For the best results, each PolyRock™ size should be treated as its own continuous run rather than being directly connected to another height.
As shown in the example above, combining different heights in a single connected line can create awkward level changes that take away from a polished finish. Since each PolyRock™ style is designed at its own scale, they do not interlock seamlessly across different heights. Keeping each size as a standalone installation ensures clean lines, level edges, and a more intentional final design.
Start and End Blocks
For a cleaner and more finished appearance, we offer Start and End Blocks to complete each run. These are especially useful for open-ended layouts that do not loop back into themselves.
The Start Block includes a protruding “male” connector, while the End Block features a receiving “female” connection. Together, they allow every installation to begin and end cleanly, creating a more polished overall look.
Extension Blocks
If your project requires a length that does not align perfectly with standard 4-foot sections, Extension Blocks can be used to fine-tune your layout. Each Extension Block is 7 inches long and includes a male connector on one end and a female connector on the other. Multiple Extension Blocks can be used to achieve more precise custom lengths.
Measuring Your Project
Begin by identifying your layout—whether it is a straight line or a curved design.
For straight lines, measure the total length using a tape measure. For curved layouts, place a string, rope, or hose along the edge, then straighten it and measure the full length.
If your project is an open shape, subtract 15 inches from your total measurement to account for one Start Block and one End Block. This gives you your adjusted working length.
Next, convert your measurement to inches and divide by 47. The whole number represents the number of full sections needed.
The remaining decimal determines how many Extension Blocks are required for a precise fit:
.01 – .25 → 1 Extension Block
.25 – .50 → 2 Extension Blocks
.50 – .75 → 3 Extension Blocks
.75 – .99 → 4 Extension Blocks
How to Order Your Project When Using Different Sizes
When ordering for your custom project, there are a few helpful tips to keep in mind. Think of each side of your layout as its own separate run. For example, if a walkway has Blocks along one side and Bricks at either end, treat each section individually when planning your order. Be sure to account for Start, End, and Extension Blocks where needed.
You can also use our Project Builder to help simplify the process. Our Blocks and Bricks are highly flexible and can be easily curved to fit your space's shape.
If you have any questions or need further assistance, don’t hesitate to reach out to our team. We’re here to help every step of the way.
