Concrete roadway and kerb, Wingfield
Concrete roadway and kerb on an industrial site, power-trowelled straight after the pour.

Concrete & civil contractors · Cavan, SA
Site cuts, base prep, slabs, warehouse floors, underground storage tank removal, cutting, core drilling and repairs for commercial sites, industrial properties, homes and mine sites across SA.
Free quotes and free site visits. Monday to Saturday, with emergency call-outs on request. Call Roger on 0419 313 985.
Based in Cavan, covering Adelaide metro, regional SA, and mine sites in SA, WA and the NT.
What we do
Our most requested concrete and civil jobs. All 18 services, from core drilling to tank removal, are on the services page.
Concreting in Adelaide for homes and businesses, formed, poured and finished properly.
Concreting across Adelaide for residential and commercial jobs, from shed slabs and pads to driveways and yard areas. Roger has more than 35 years in concrete, so the parts that decide how long a slab lasts (set-out, base, reinforcement and finishing) are done properly before anyone picks up a float. You deal with one crew from set-out to clean-up, and you get a slab that sits level, drains where it should and is built to limit cracking rather than invite it.

Exposed aggregate concrete for Adelaide driveways, paths and entertaining areas. Hard-wearing, with grip.
Exposed aggregate concrete for Adelaide driveways, paths and outdoor entertaining areas. The top layer of cement paste is washed away to reveal the stone in the mix, giving a textured, hard-wearing surface with more grip underfoot than smooth concrete. Timing the wash-off is what separates an even finish from a patchy one. You pick the aggregate blend, and the finished surface is cut with control joints and sealed.

Concrete repair in Adelaide for cracked, broken or sunken concrete, before it becomes a bigger job.
Concrete repair in Adelaide for cracked, broken, lifted or sunken slabs, paths and floors. The first job is working out why it failed (ground movement, a poor base, tree roots or overloading), because patching over the cause just brings the crack back. Minor damage can be patched or resurfaced. Badly damaged sections are cut out and replaced so they sit flush with the surrounding concrete and the trip hazard is gone.

Concrete cutting in Adelaide for openings, trenches, joints and removals in slabs and walls.
Concrete cutting in Adelaide for new openings, trenches, joints and removals in slabs and walls. Saw cutting leaves a straight, clean edge and does far less damage than breaking concrete out by hand, so the surrounding slab stays sound. Common jobs include trenches for plumbing and services, doorway openings, control joints in new slabs, and sections cut out for removal and replacement.
What's included
Excavation and earthmoving in Adelaide: site cuts, trenching and earthworks for building and civil jobs.
Excavation in Adelaide for construction and civil projects, covering site cuts, levelling, trenching and bulk excavation. Getting the excavation and the concrete from one contractor means the ground is prepared for exactly what's going on it, with no gap between trades for things to go wrong. Spoil is taken away, and cuts and trenches are backfilled and compacted ready for the next stage.

Underground storage tank removal and installation in Adelaide, from excavation to reinstatement.
Underground storage tank removal and installation in Adelaide for fuel and water tanks on commercial, industrial and rural sites. For removals, the tank is excavated, lifted out and taken away, with soil testing coordinated with your environmental consultant before the hole is backfilled and the site reinstated. For new tanks, excavation, bedding, placement and backfill are handled as one job.

Based in Cavan, we work from the northern suburbs through to south of the city. Jobs within about 20km of the yard carry no travel charge. Further out we add a fee to cover the drive, and it is on your quote before you commit to anything.
About A&J

Roger has been in concrete since the eighties. In 2020 he and his son Anthony took over A&J, and they have kept it deliberately small since — the two of them and a crew of two, rather than a name on a truck and whoever is available that week.
It means Roger answers his own phone, quotes the job himself, and is usually on site while it is being poured. If something needs deciding halfway through, you are talking to the person who will be standing in it, not to an office. That is also why we turn work down when the diary is full: we would rather lose a job than hand it to someone we have not worked with.
Who you'll deal with
Roger takes the call and prices the work. Anthony runs the crew. Between them they are on nearly every job.
Why we stay small
Four people means we know what every job looks like without a meeting about it. It caps how much we take on, and we are fine with that.
What we take on
Driveways and slabs through to warehouse floors, and civil work on mine sites in SA, WA and the NT. If it is not our kind of job we will say so.
Call Roger or send the job details through the form.
Where the job needs it, we come out and measure up at no cost.
A clear price for the scope, including any fee to drive to sites outside our usual Adelaide coverage.
We schedule the work and see it through from ground prep to finish.
Concrete roadway and kerb on an industrial site, power-trowelled straight after the pour.
Exposed aggregate driveway, poured and washed back to expose the stone.
Warehouse floor burnished with a ride-on power trowel to a hard, smooth, low-dust finish.
Excavation for an underground storage tank removal on a commercial site.
Concrete bund walls around industrial storage tanks, with the next section's reinforcement laid ready to pour.
Plain concrete driveway with saw-cut control joints, poured to the kerb.
Tell us what the job is, where it is and when you need it, and we'll come back with a price. For urgent work, call Roger direct on 0419 313 985.
Prefer to call?
0419 313 985
roger.s@ajcontractors.com.au
Based in
Cavan SA 5094
Hours
Mon–Sat 6:30am–5pm · Sundays & emergencies on request