Slag Insta-Path™
Description
Slag Insta-Path is a great choice for walkways, garden paths, and patio surfaces because it compacts tightly into a firm, stable surface that still feels natural underfoot. Unlike washed gravel, this material is a fine crusher fines mix that includes natural dust and small particles by design — it's exactly what allows it to lock together into a solid, walkable path rather than staying loose like decorative rock. Slag is a dense, heavy material — understood to be a by-product of the metal smelting process — giving it a noticeably higher weight per cubic yard than most other path materials we carry. With its cool gray tone that deepens to a striking black when wet, Slag Insta-Path brings bold, modern contrast to any path or walkway. Whether used for a garden path, a utility walkway, or a low-traffic patio surface, Slag Insta-Path delivers a clean, finished look with minimal upkeep.
Quick specs
Available at Our Salt Lake County Landscape Center
This material is stocked in bulk at our Salt Lake County landscape center and is available for both pickup and delivery throughout the surrounding Utah areas. Customers are welcome to stop by and view the material in person, making it easier to compare color and texture before placing an order.
Bulk Supply
We stock our landscape center with clearly marked bins so every product is easy to find and readily available.
Loaded by Equipment
Our team can quickly load larger quantities using skid steer loaders for fast and efficient pickup.
See it in Person
Stop by and get a feel for the material firsthand — no surprises when it arrives.
Available at This Location
Free Samples
Take home a free sample to make sure this material is the right fit for your project.
Pickup
We load trucks and trailers on-site using loaders, with no minimum purchase required.
Delivery
We offer delivery for orders of all sizes, from small quantities to large bulk loads.
Bagging
Bagging is available for pickup and delivery orders at an additional cost.
Live Support
Visit us in person or call or text our team with any questions—we’re here to help.
Installation Depth Guide — Cubic Yard Coverage for Slag Insta-Path
| Depth | Coverage per Cubic Yard | Recommendation |
|---|---|---|
| 1″ | ~324 sq ft | Too shallow |
| 1.5″ | ~216 sq ft | Not recommended |
| 2″ | ~162 sq ft | Minimum depth |
| 2.5″ | ~130 sq ft | Recommended |
| 3″ | ~108 sq ft | Ideal depth |
| 3.5″ | ~93 sq ft | Usually unnecessary |
| 4″ | ~81 sq ft | Excessive |
Note: A typical installation depth is 2–3 inches for this material, which provides a firm, stable surface for walkways and garden paths. Because this product compacts significantly once installed and tamped, plan to install slightly deeper than your target finished depth — a 2.5–3.5 inch loose layer typically compacts down to a 2–3 inch finished surface. Because Slag is notably denser and heavier than our other path materials, a cubic yard will weigh more than the same volume of standard crusher fines — worth keeping in mind for truck or trailer weight limits. Installing over a weed barrier and compacted sub-base, and containing the edges with steel or plastic edging, will give the longest-lasting, most stable result. When in doubt, test a small section first.
Product details, what you should know
- Sizing: Fine crusher fines — a well-graded mix of small aggregate particles and natural dust designed to compact tightly. Not a uniform decorative gravel; the mix of particle sizes is intentional.
- Cleanliness: Naturally contains dust and fine particles as part of the mix — this is a feature, not a flaw, since it's what allows the material to compact and lock together into a stable surface. Not recommended if you're looking for a clean, dust-free washed material.
- Appearance: Fine, cool gray coloring that deepens dramatically to a near-black tone when wet — one of the most dramatic wet/dry color shifts in our path lineup. Compacts to a smooth, tight surface rather than a loose decorative texture. Color may vary slightly between loads.
- Density: Slag is a notably dense, heavy material compared to our standard crusher fines products — a cubic yard of Slag will weigh more than the same volume of a typical path material. This is understood to be a result of its origin as a by-product of the metal smelting process, giving it a higher mineral/metallic content.
- History: Material has remained generally consistent in color and gradation over time, as is typical for a locally sourced crusher fines product.
- Also known as: Commonly referred to as slag fines, smelter slag, or black path fines.
Slag Insta-Path stands out for its bold, modern look and dramatic wet-to-dry contrast — a cool gray that deepens to near-black after watering or rain. Unlike decorative gravel, which stays loose, this material's fines content lets it compact into a firm, walkable surface — ideal for garden paths, utility walkways, and low-traffic patios. Worth noting: because this is a denser, heavier material than our other path products, a given cubic yard will weigh noticeably more — factor that in when planning delivery loads or truck/trailer capacity. For the best long-term result, install over a compacted sub-base with a weed barrier underneath and edging along the sides to keep the material contained.
- Stock: In Stock
- Unit: Cubic Yard
- Weight: 2,700.00lb
- SKU: RKN-343-0001
- Bin Location: J7