If you're building landscape bodies — whether for a single owner-operator or a fleet of lawn care and landscaping companies — the aluminum vs. steel debate comes up on every build. And rightfully so. The choice of body hardware material affects weight, durability, corrosion resistance, maintenance cost, and the long-term resale value of the finished body.
Here's the practical breakdown, based on what we see fabricators and fleet buyers actually deal with in the field.
Why Landscape Bodies Have Different Demands Than Dump Bodies
Standard steel dump bodies are built for one thing: raw strength under heavy loads. Landscape bodies have a more complex set of demands. They carry lighter loads (mulch, soil, stone, equipment) but they're exposed to:
- Constant moisture from organic material and irrigation equipment.
- Fertilizers, herbicides, and soil amendments that accelerate corrosion.
- Frequent loading and unloading — often more cycles per day than a dump trailer.
- Aesthetic expectations — landscaping companies often want a clean, professional look.
These factors push many landscape body builders toward aluminum for key components, even when the body structure itself remains steel.
Aluminum: Where It Wins
Aluminum shines in landscape body applications because of its corrosion resistance and weight savings. Specific areas where aluminum components outperform steel:
- Sideboards and railing: Aluminum extrusion sideboards resist the constant moisture and chemical exposure that causes steel sideboards to rust through within 3–5 years of daily use. They're also significantly lighter, making it easier for operators to add and remove boards.
- Tailgate hardware: Aluminum cam latches and hinges maintain their operation longer in corrosive environments. Steel latches seize up with rust and become difficult to operate, leading to improvised fixes and safety issues.
- Toolboxes and compartments: Aluminum toolboxes save 30–50% of the weight of comparable steel units and won't rust when exposed to fertilizer or road salt.
- Top rail and stake pockets: Aluminum extrusion top rail is a popular choice because it stays clean-looking over years of use — a selling point for landscaping fleets that care about truck presentation.
Steel: Where It Still Wins
Steel is not obsolete in landscape body builds. There are specific applications where it remains the better choice:
- Floor: Even on aluminum-heavy builds, most fabricators stick with 10-gauge or 12-gauge steel for the body floor. Aluminum floors are significantly more expensive and can develop stress cracks over time when repeatedly loaded with point loads (like pallet forks or equipment tires).
- Hinge points and pivot hardware: The body hinge, tailgate pivot pins, and hoist mounting points see concentrated loads that favor steel. Aluminum can be used here but requires careful engineering to avoid fatigue cracking at stress concentrations.
- Main body structure: The body cross members and main rails are almost universally steel in production landscape body builds. The cost premium of all-aluminum structural framing doesn't pay off at typical landscape body payload ratings.
The Weight vs. Cost Trade-Off
Aluminum components typically cost 20–40% more than equivalent steel components on a per-piece basis. The payoff comes in two areas:
- Weight savings: A landscape body built with aluminum sideboards, top rail, toolboxes, and tailgate hardware can be 200–400 lb lighter than the same body built entirely in steel. That's real payload capacity that can be added back.
- Lower maintenance cost over time: Steel landscape bodies in high-exposure environments need rust treatment, painting, and hardware replacement every 2–3 years. An aluminum-accented body can go 5–7 years with minimal maintenance.
Galvanic Corrosion: The Risk of Mixing Materials
One critical issue when mixing aluminum and steel in a single body: galvanic corrosion. When aluminum and steel are in direct contact in the presence of moisture, an electrochemical reaction accelerates corrosion of the aluminum. To avoid this:
- Always use plastic or rubber isolators between aluminum components and the steel body structure.
- Use stainless steel or hot-dip galvanized fasteners when bolting aluminum to steel — standard zinc-plated hardware will corrode rapidly.
- Apply a bead of butyl tape or sealant at aluminum-to-steel contact points on the body exterior.
What DAT HOIST Recommends for Landscape Builds
Our recommendation for most production landscape body builds is a hybrid approach: steel floor and main structure with aluminum sideboards, top rail, tailgate latches, and toolboxes. This gives you the structural strength of steel where it matters, the weight savings and corrosion resistance of aluminum where the body is most exposed, and the cleanest possible finished appearance.
DAT HOIST carries hardware for both steel and aluminum landscape body builds — hinges, latches, cam bars, stake pocket hardware, and mounting components ready to ship. Call or email us to discuss your next build.