Mastering Concrete Edging: How to Lay Blocks

Transforming the perimeter of your property into a polished, well-defined space is an achievable task with concrete edging blocks. These durable, low-maintenance materials not only enhance your landscape's aesthetic appeal but also prevent soil erosion and contain plants. Here's a comprehensive guide on how to lay concrete edging blocks, ensuring a professional finish that will last for years.

Before you begin, ensure you have the right tools and materials. You'll need concrete edging blocks, a tape measure, a shovel, a level, a rubber mallet, gloves, safety glasses, and, depending on the size of your project, a wheelbarrow for mixing concrete.

Preparation and Planning

Accurate planning is key to a successful installation. Start by measuring the area where you'll be laying the edging blocks. This will help you determine how many blocks you need. Most blocks come in standard lengths, but you may need to cut some to fit curves or tight spaces.

Next, decide on the design and layout of your edging. Consider the shape and size of your garden beds, pathways, and other features. Sketch a rough plan to ensure your edging complements these elements and enhances your landscape's overall design.

Choosing the Right Blocks

Concrete edging blocks come in a variety of styles, colors, and textures. Choose blocks that complement your home's exterior and landscaping. Consider the height and width of the blocks to ensure they meet your needs. Taller blocks provide more definition, while wider blocks are better for containing soil.

Some blocks are designed to interlock, making them ideal for straight lines and curves. Others may require additional materials, like concrete adhesive or mortar, to secure them in place. Ensure you understand the installation requirements for the blocks you choose.

Preparing the Site

Before you start laying the blocks, prepare the site by removing any grass, weeds, or debris. The area should be level and free of obstructions. If necessary, use a shovel to dig out a trench where the blocks will sit. The depth of the trench will depend on the height of your blocks and whether you're using them for edging or as a border.

Once the trench is dug, use a level to ensure the base is even. This will help prevent the blocks from wobbling or leaning once they're in place. If the soil is uneven, add or remove soil as needed until the base is level.

Laying the Edging Blocks

Start laying the blocks from a corner or straight edge, using a full block to begin. This will ensure a neat, even line. Use a tape measure to ensure the blocks are spaced evenly, with a consistent gap between them. Most blocks are designed to be laid with a 1/4" to 1/2" gap between them to allow for expansion and contraction.

As you lay the blocks, use a level to ensure they're even and straight. Tap the blocks gently with a rubber mallet if necessary to level them. If you're using interlocking blocks, ensure they're properly aligned and interlocked before moving on to the next block.

Dealing with Curves

Laying edging blocks around curves can be challenging, but it's not impossible. You may need to cut some blocks to fit the curve. Use a wet saw or a masonry blade in a circular saw to cut the blocks. Wear safety glasses and gloves when cutting to protect against debris.

To create a curve, lay the first block at the starting point of the curve. Then, lay the next block at an angle, with the outer edge aligned with the inner edge of the first block. Continue this pattern, adjusting the angle of each block as needed to create the curve. Use a string line or a flexible ruler to help guide you.

Securing the Blocks

Once all the blocks are laid, it's time to secure them in place. If you're using interlocking blocks, this step may not be necessary. However, if you're using blocks that require additional materials, follow the manufacturer's instructions for securing them.

For non-interlocking blocks, you can use concrete adhesive or mortar to secure them. Apply the adhesive or mortar to the base of the block and the sides that will be in contact with the adjacent blocks. Press the block into place, using a level to ensure it's even. Allow the adhesive or mortar to set according to the manufacturer's instructions.

Finishing Touches

Once the blocks are secure, it's time to add the finishing touches. If you've dug a trench for the blocks, backfill the trench with soil, ensuring the blocks are still level. Use a rake or a shovel to smooth the soil and create a neat edge.

If you're using the edging blocks to contain plants, you can now add your plants or mulch. Ensure the plants are properly spaced and the mulch is evenly distributed. Step back and admire your handiwork - your landscape now has a polished, professional edge that will last for years.

Regular maintenance is key to keeping your concrete edging blocks looking their best. Remove weeds as they appear, and trim back plants that may be encroaching on the edging. With proper care, your concrete edging blocks will continue to enhance your landscape's aesthetic appeal and functionality.