Metal Edging for Decomposed Granite Paths

Start by excavating the path area to a depth of 3–4 inches, then install metal edging along both sides to define the borders. Compact a base layer, add a weed barrier if desired, and fill with decomposed granite, raking to a level finish. Sure-loc aluminum or steel edging in 4-inch heights is ideal, providing a clean visible border that contains the DG surface material securely.

A 4-inch height is the most common choice for decomposed granite paths, as it provides sufficient depth to contain the aggregate and accommodate a weed barrier beneath. For paths with steep elevation changes or deep DG installations, the SureEdge 8-inch model or steel 5-inch variants offer added containment and ground anchorage in challenging soil conditions.

Aluminum edging is ideal for most residential DG paths — it's lightweight, rust-proof, and flexible enough to create smooth curves. Steel edging suits high-traffic commercial paths where added rigidity and weight are needed. Sure-loc offers both materials in 4-inch heights with dual stake locking systems, so the best choice depends on traffic load, path geometry, and project scale.

For curved paths, choose a thinner gauge aluminum edging such as the CrispEdge 1/8-inch or Sure-loc Slide-Edge, which flex easily to follow curves without cutting or heating. Drive stakes into the angled stake pockets at 45 degrees to lock the edging in place and prevent frost heave. The dual stake system ensures the edging holds its shape along both tight bends and sweeping arcs.

Sure-loc aluminum edging will never rust, as aluminum is naturally corrosion-resistant. Steel edging is coated using a Shot Blast Surface Preparation system with high-quality powder coating that resists pH swings in alkaline soils and will not chip or fade. A Sure-Rust self-weathering option is also available for a natural patina finish. Both materials are rated for permanent, maintenance-free installation.

Yes. Sure-loc aluminum edging features Anti-Frost Heave Technology, where stake pockets accept stakes at a 45-degree angle. This design allows the edging to resist ground movement during freeze-thaw cycles, preventing the edging from heaving out of position. This is particularly important for decomposed granite paths in northern climates where soil expansion and contraction can dislodge standard vertical-stake edging systems.