From farm manure piles to municipal leaf composting to commercial organic waste processing, skid steers handle much of the heavy work at composting and organic waste sites across Canada. This guide covers which attachments fit each stage of the process — and which ones get destroyed by this type of work if you're not careful.
Compost and organic waste management spans a wide range of Canadian operations:
Skid steers don't replace dedicated compost turners for large commercial operations, but they're the workhorse for everything else — moving material, loading spreaders, turning small windrows, and screening finished product.
Before getting into attachments, a word on maintenance. Compost — especially hot compost and manure-based material — is chemically aggressive. The combination of moisture, acids, ammonia, and biological activity attacks hydraulic fittings, seals, and unpainted steel faster than most construction environments.
Operators working in composting environments should expect to:
This isn't a reason to avoid the work — it's just the reality of the environment. Factor it into your maintenance schedule and parts budget.
The most common task at any composting operation is moving material. Whether you're building a windrow from incoming feedstock, relocating a curing pile, or loading finished compost into a truck or spreader, a bucket is doing most of the work.
Compost varies dramatically in density depending on its stage. Fresh feedstock (mixed food waste, wood chips, municipal yard waste) is bulky and relatively light. Cured compost that's been screened is dense and heavy. Wet manure-based compost sits somewhere in between and may be nearly liquid in places.
A light material or high-capacity bucket is appropriate for fluffy, low-density material — leaf compost, wood chip piles, or early-stage windrows. For finished, screened compost or wet manure, a standard GP bucket sized to your machine's rated operating capacity is the right call.
A 4-in-1 combination bucket is useful in composting operations because the clamshell opening lets you control material release precisely over a spreader or truck box. The grab function is helpful for moving irregular material or pulling apart frozen or compressed piles.
See our bucket guide for a full breakdown of types.
Root grapples and industrial grapples handle loose, fibrous material that buckets struggle with — woody brush, straw, partially decomposed feedstock with long fibres, and mixed yard waste. Where a bucket wants to push material out of the way, a grapple grabs and holds it.
At farm-scale operations receiving brush, slash, or mixed yard waste, a grapple speeds up the process of building initial windrows and managing incoming material. At municipal composting sites, grapples handle the unprocessed green waste that comes in with long branches and tangled material that defeats buckets.
See our grapple guide for details on grapple types.
Regular turning is essential for aerobic composting — it introduces oxygen to the pile, redistributes moisture and heat, and accelerates decomposition. The method depends on scale.
At farm scale, the most common turning method is simply scooping material from one side of a windrow with a bucket and placing it on the other, effectively rebuilding the pile. It's not elegant, but it works and is accessible to any operator with a skid steer and bucket.
The technique: work along one side of the windrow, scooping from the outer (cooler) layer and dumping on top of the opposing side. This brings the cooler exterior into the hot core where decomposition is most active. Multiple passes accomplish a reasonable turn without dedicated equipment.
For this application, a wider bucket is more efficient than a narrow one — you're covering more windrow in each pass. A 2.1–2.4m wide bucket on a larger skid steer is common for this work. If your machine can handle the weight, a high-capacity light material bucket in the widest size available makes the work faster.
Commercial composting facilities processing significant volumes invest in dedicated self-propelled windrow turners. These machines straddle the windrow and pass through it at walking pace, mechanically fluffing and aerating the pile in a single pass. Skid steers complement this equipment for material handling around the site but don't replace it at commercial scale.
Mature compost often contains debris that didn't break down — rocks, wood chunks, plastic fragments at municipal sites, or uncomposted feedstock. Screening removes this material and produces a uniform, saleable or usable product.
Purpose-built trommel screen attachments for skid steers are available in Canada. These replace the standard bucket with a rotating drum of perforated steel — the skid steer dumps material into the drum, oversize rejects exit one end, and screened material falls through. For operations producing several hundred tonnes of compost per year, a skid steer trommel is a practical investment.
Smaller operations often use a static grizzly screen or rented trommel and use the skid steer purely for feeding the screener and moving screened product.
A skeleton (rock) bucket with wide bar spacing can do rough screening of large debris from compost — pulling out branches, large stones, and obvious contaminants. It's not a replacement for a proper trommel, but it handles the initial sort before finer screening. See our skeleton bucket guide.
Finished compost needs to get from the storage pile to where it's being used — farm fields, garden beds, remediation sites, or customer pickup. Skid steers handle both sides of this.
A skid steer with a bucket loads compost into truck boxes or pull-behind spreaders efficiently. The key is matching bucket capacity to the spreader or truck size — over-filling causes spillage; under-filling means extra trips.
For farm use, a manure spreader loaded with finished compost requires a steady, controlled dump. A 4-in-1 bucket with precise clamshell control makes this cleaner than a straight bucket that tends to dump all at once.
Skid steers aren't typically used to spread compost directly — that's what pull-behind or self-propelled spreaders do. However, on small market garden plots or tight areas, pushing compost out of a bucket and spreading it with the bucket face is practical. A land plane or box blade can help incorporate and level a compost top-dress on prepared garden beds.
Canadian composting operations face significant seasonal constraints:
Active composting slows dramatically in winter — frozen piles don't turn; material intake may continue but processing halts until spring. In colder provinces, composting sites need to plan for frozen pile management. Breaking up frozen compost material requires more aggressive bucket work or even a hydraulic breaker if the pile has frozen solid at the base.
See our guide on cold weather hydraulics for operating attachments at winter temperatures.
Spring is the busiest period for many composting operations — frozen winter piles are now accessible, municipalities are collecting spring yard waste, and farmers want finished compost for pre-plant application. This is when machine availability becomes critical. If you rely on a rental skid steer for composting work, book it well in advance of the spring period.
Composting sites are often muddy — organic material, water, and constant machine traffic combine to create difficult ground conditions. Rubber tracks offer better flotation than tires on soft, wet compost sites. If wheel-slip is a persistent problem, consider operating during drier periods or adding gravel to high-traffic lanes through the site.
Compost attacks equipment. Practical mitigation:
See our attachment maintenance guide for a general framework.
| Task | Best Attachment | Notes |
|---|---|---|
| Moving loose feedstock | Light material bucket or grapple | Grapple for fibrous / tangled material |
| Moving cured / dense compost | Standard GP bucket | Size to machine ROC — dense compost is heavy |
| Building / turning windrows | Wide GP or light material bucket | Wider bucket = fewer passes per turn |
| Rough debris removal | Skeleton (rock) bucket | Pulls out large contaminants before fine screening |
| Screening finished compost | Trommel screen attachment | Available for skid steers; worth renting before buying |
| Loading trucks / spreaders | GP bucket or 4-in-1 bucket | 4-in-1 gives better controlled release |
| Breaking frozen pile surface | Hydraulic breaker | For severely frozen pile bases in winter |