Booking a skid steer auger attachment rental GTA crews can count on is the fastest way to get footing holes dug to full depth and dead plumb without burning a day on a post-hole digger. Whether you are setting deck piers in a Leslieville backyard or drilling a row of sonotube holes for a garage addition in Brampton, a hydraulic auger on a skid steer turns a two-day dig into a morning.
This post covers what the attachment actually is, how to match the drive and bit to the soil you will hit around Toronto, how much concrete and spoil each hole produces, and where an auger falls short. If you already know the machine you want, you can browse our Skid Steer rentals and pair one with an auger today.
Why an Auger Is the Right Tool for Footing Holes
An auger is the right tool because footings in the GTA have to go deep, and nothing else drills a clean, round, vertical hole to frost depth as quickly. Shovels and clamshell diggers widen the hole as you go, which wastes concrete, and a two-person gas auger fights you in clay and kicks hard when it catches a root or a stone.
Frost Depth Sets the Target
Most footings in Toronto and the surrounding regions need to bottom out at least 1.2 metres (about 48 inches) below finished grade to stay below the frost line. That is the figure building departments across southern Ontario work from for deck and porch footings. Some municipalities and engineered designs call for more, so confirm the depth on your permit drawings before you drill. At 48 inches, a handheld digger is slow, punishing work. A skid steer auger reaches that depth in one pass with a standard bit or a short extension.
Where the Time Savings Come From
The savings come from hydraulic torque and from the machine carrying the weight. A planetary auger drive on a standard-flow skid steer will typically push a 12-inch bit through 48 inches of firm clay in a few minutes, including stops to clear spoil. The same hole by hand can take a labourer half an hour or more, and the quality falls off as they tire. On a job with 20 deck footings, that difference is most of a working day. A skid steer auger attachment rental GTA builders book for a single day often covers its cost in saved labour before lunch.
Skid Steer Auger Attachment Rental GTA: What You Are Getting
A skid steer auger attachment is a hydraulic motor and gearbox, called the drive, hung from a mounting frame that locks onto the skid steer's universal quick-attach plate, with an auger bit pinned to the drive's output shaft. The machine's auxiliary hydraulics spin the drive, while the lift arms and tilt let the operator lower the bit into the ground and hold it vertical. Manufacturers such as Bobcat publish auger drive torque and hydraulic flow specifications for each model, and it is worth checking those numbers against the carrier you plan to use.
Planetary Drive or Direct Drive
Planetary drives use a gear reduction to multiply torque, so they turn slower but twist harder. They are the better choice for GTA clay, compacted fill and larger bits from 16 inches up. Direct drives skip the gearbox, spin faster and weigh less, which suits sandy soil and small-diameter fence post holes. For footing work around Toronto, a planetary drive is usually the safer bet because you rarely know what sits under the topsoil until the bit is in it.
Bits, Teeth and Extensions
Auger bits for footing and post work commonly run from 6 to 36 inches in diameter, with 10 to 16 inch bits covering most residential footings. Two tooth styles matter:
- Earth teeth: flat, replaceable cutting teeth for clay, loam, sand and soft fill. They cut fast and leave a clean wall.
- Rock or frost teeth: carbide-tipped bullet teeth on a heavier bit for frozen ground, hardpan, gravelly fill and soft shale. They cut slower but will not dull out on the first stone.
Standard bits are roughly four feet long. If your footing depth plus the height of the mounting frame means the drive bottoms out on grade before you reach depth, an extension of 2 to 4 feet solves it. Ask for one when you place your skid steer auger attachment rental GTA order if your drawings call for anything deeper than 48 inches.
Reading GTA Soil Before You Drill
GTA soil varies more than most people expect, and it decides which bit and drive you should rent. Before you finalise a skid steer auger attachment rental GTA booking, a look at a neighbour's excavation, a test hole with a shovel or the geotechnical report on a larger job will tell you most of what you need.
- Clay and glacial till (most of Toronto, Peel, Halton and Durham): sticky, dense and full of the odd cobble. Use a planetary drive with earth teeth and clean the flighting often, because wet clay packs onto the bit and adds weight.
- Sandy and silty soil (the Oak Ridges Moraine through Richmond Hill, Aurora, King and Uxbridge): drills fast, but the walls can slough in. Drill, pull out cleanly and set your sonotube promptly.
- Shale near the surface (parts of Etobicoke and Mississauga, especially near the creek valleys): soft, weathered shale will yield to rock teeth. Hard ledge will not, and you may need a breaker or an engineer's input.
- Frozen ground (December to March): frost can reach a metre or more in a cleared, snow-free yard during a cold winter. Rock or frost teeth are required and progress is slower, so plan fewer holes per hour.
Hole Size, Spoil and Concrete: Numbers to Plan With
Every hole you drill produces spoil you have to move and a void you have to fill, so work out both before the auger arrives. The table below shows the volume of an open, straight-walled hole drilled to 48 inches. Loose spoil takes up roughly 20 to 30 percent more room than these figures once it is out of the ground, and clay swells at the high end of that range.
| Bit diameter | Typical use | Soil removed per hole | Concrete per open hole |
|---|---|---|---|
| 8 in | Fence and light post holes | 1.4 cu ft | 0.04 m³ |
| 10 in | 8 in sonotube deck footings | 2.2 cu ft | 0.06 m³ |
| 12 in | 10 in sonotube deck and porch footings | 3.1 cu ft | 0.09 m³ |
| 16 in | 12 in sonotubes and heavier deck or addition piers | 5.6 cu ft | 0.16 m³ |
| 18 in | Large piers and light pole bases | 7.1 cu ft | 0.20 m³ |
| 24 in | Structural piers to an engineer's design | 12.6 cu ft | 0.36 m³ |
Ready-mix in Ontario is ordered in cubic metres, so 20 open 12-inch holes need about 1.8 m³ before waste. If you are pouring into sonotubes, calculate the concrete on the tube diameter instead and backfill the gap around it. Most suppliers set a minimum order and charge a short load fee below it, so it pays to group your footings into one pour.
Picking the Right Carrier for the Auger
The carrier matters as much as the attachment, because its hydraulic flow drives the auger and its footprint decides whether it fits through the gate and how much lawn it tears up.
Wheeled Skid Steer
A wheeled skid steer is the default carrier for auger work on firm ground and new-build lots. It travels quickly between holes, sets up fast and costs less to rent than a tracked machine. The trade-off is ground pressure: on a wet lawn it will rut, and skid-turning on sod leaves scars. Lay plywood or ground mats along your travel path and keep turns on grass to a minimum. Check the width against your access as well, since many standard skid steers run 66 to 72 inches across the bucket, which rules out a lot of older Toronto side yards. Our skid steer rental fleet lists the dimensions you need to measure against.
Compact Track Loader
A compact track loader spreads its weight over rubber tracks, so it handles soft or finished ground with far less damage and keeps its footing on slopes and in mud. It also tends to offer more stability for larger bits. It costs more per day and is slower to reposition. If the yard is soaked or the client is particular about the lawn, look at our Track Loader rentals instead. The same auger attachment mounts on either machine, provided the carrier's hydraulic flow suits the drive.
When an Excavator Auger Makes More Sense
For holes on a steep slope or footings you need to reach over a retaining wall, an excavator-mounted auger is the better tool. The boom gives you reach, and the machine can sit on level ground while the auger works below it. Compare options on our Excavator rentals page.
Planning Your Skid Steer Auger Attachment Rental GTA Job
Good planning means the auger spends the rental day drilling instead of waiting. The steps below are what separate a smooth one-day footing job from a costly second day.
Skid Steer Auger Attachment Rental GTA Checklist
- Request locates. Contact Ontario One Call to request free utility locates at least five business days before you dig. Ontario's construction regulation, O. Reg. 213/91 under the Occupational Health and Safety Act, requires underground services to be located and marked before excavation, and an auger will cut a gas line as easily as it cuts clay.
- Arrange private locates. Ontario One Call members only mark their own lines. Lines the property owner installed, such as feeds to a garage, a hot tub or a gas barbecue, need a private locator.
- Confirm the permit and depth. Most GTA municipalities require a building permit once a deck sits more than 600 mm (about 24 inches) above grade, and the permit drawings set footing size and depth.
- Mark every hole centre. Use stakes or marking paint, and set offset reference stakes so you can check layout after the spoil buries your marks.
- Measure access. Gate width, overhead wires, tree limbs and slope on the travel path all decide which carrier fits.
- Book concrete and plan spoil. Schedule the ready-mix truck for soon after the holes are inspected, and decide whether spoil is being regraded on site or hauled away.
Running through this list before you call in your skid steer auger attachment rental GTA booking lets us match the drive and bit to the carrier on the first try.
Drilling Technique That Keeps Holes Plumb
A plumb hole comes from letting the auger feed itself while the drive hangs free and vertical. These habits make the biggest difference:
- Position the bit tip on your mark with the lift arms low and the machine square to the hole, then check plumb from two sides or have a spotter do it.
- Start at low engine speed and low rotation so the tip bites without walking off the mark, then bring the RPM up once the flighting is in the ground.
- Let the weight of the bit and drive do the cutting. Pushing down with the arms can lift the front of the machine, bend the hole and stall the drive.
- Pull the auger up every 12 to 18 inches and spin it to throw the spoil off the flighting, particularly in wet clay.
- If the bit binds on a root or stone, stop, reverse the rotation briefly and lift it out. Forcing it twists bits and damages the drive mount.
- Keep everyone clear of the spinning bit. Loose clothing and gloves can be wound into the flighting in an instant.
On a typical skid steer auger attachment rental GTA job, an operator new to the attachment settles in within the first couple of holes, so drill a test hole away from your layout before you start on the real footings.
Honest Limits of a Skid Steer Auger
A skid steer auger is fast, but it is not the answer to every footing. Know where it falls short before you commit to the rental.
- Flared footing forms need a wide base. Plastic footing forms that sit under a sonotube need either a much larger bit or hand digging at the bottom of the hole, which adds spoil and time.
- Boulders and hard rock stop it. A rock bit chews through cobbles and soft shale, but solid bedrock or a large boulder means a breaker or a design change.
- It needs access and leaves a footprint. Even with mats, expect some lawn repair, and a backyard with no gate wider than 36 inches is out of reach for a standard skid steer.
- A few holes may not justify it. For a handful of fence posts in soft soil, a handheld auger or screw piles can be cheaper once delivery is counted.
- Caving soil needs fast follow-up. In sand or saturated ground, holes left open overnight can collapse, so drill only what you can form and pour.
For most residential footings, those limits are easy to plan around once you know the soil and the access. A skid steer auger attachment rental GTA contractors set up properly will usually finish a full deck or addition footing layout in a single day. Pairing the carrier with the right bit from our Attachments for rent range keeps the whole setup on one booking.
Book Your Skid Steer and Auger for Your Next Footing Job
Expert Tools Rental supplies skid steers and auger attachments to contractors and homeowners across Toronto and the GTA. Tell us your hole diameter, depth, soil and access, and we will set you up with a drive and bit that suit the carrier and the ground. You can see everything we carry on our Tools for Rental page, or start with our Skid Steer rentals to pick your machine.
Ready to put a skid steer auger attachment rental GTA job on the calendar? Contact Expert Tools Rental with your dates and footing schedule, and we will confirm availability and rates.
Frequently Asked Questions
What size bit should I ask for with a skid steer auger attachment rental in the GTA for deck footings?
Most deck footings in the GTA use 10 or 12 inch sonotubes. Drill a size up so the tube drops in cleanly: a 12 inch bit for a 10 inch tube, a 15 or 18 inch bit for a 12 inch tube. Fence posts typically take a 9 or 12 inch bit. Your permit drawings set the footing size, so confirm before booking.
How deep do footings need to go in the GTA, and can a skid steer auger reach that depth?
In most of the GTA, footings must sit at least 1.2 m (about 4 ft) below grade to stay under the frost line, and municipal deck guides use the same figure. Most skid steer auger bits are roughly 4 ft long, which leaves little margin once loose spoil falls back in. Ask for a 2 or 4 ft extension when you book if you need full depth.
Does my skid steer need high-flow hydraulics to run an auger attachment?
Most auger drives are built for standard flow machines, typically in the 10 to 30 gpm range, so a high-flow skid steer is not required. What matters is matching the drive to your machine's flow and pressure. Give the rental desk your skid steer make and model, and confirm it has auxiliary hydraulics and a universal quick attach plate.
Will a skid steer auger handle GTA clay and rocky fill?
Much of the GTA sits on heavy clay and glacial till, which a standard earth bit handles well when the ground is not frozen. Wet clay packs onto the flighting, so lift the bit out every foot or so to clear it. If you hit cobbles or dense hardpan, switch to a rock bit with carbide teeth instead of forcing the earth bit.
What do I need to do before digging footings with a rented skid steer auger?
Request locates through Ontario One Call at least five business days before you dig. The service is free, and locates are required by law in Ontario. Mark each footing from your approved permit drawings, then book the skid steer auger attachment rental in the GTA once locates clear, so you are not paying for a machine that sits idle.
