Concrete repairs
Concrete Repairs Newcastle: Cracks, Spalling and Sunken Slabs
A crack that is getting wider, a corner that has dropped, a surface that is flaking away. Tell us what you are seeing. When you book concrete repairs in Newcastle with us, we'll send a licensed repair specialist, who will give you a straight answer on whether it is worth fixing.
Book with us and we'll send a licensed repair specialist to quote. The work is done by independent contractors, and it costs you nothing to ask.
What concrete problems can we help with?
Cracks
Hairline shrinkage cracks, wide ones with a step between the two sides, and everything in between.
Spalling and concrete cancer
Concrete breaking away around rusting steel. Salt air near the coast speeds it up.
Sunken or lifted slabs
Sections that have dropped over washed-out ground or been pushed up by tree roots.
Broken edges and steps
Chipped driveway edges, crumbling step noses and damaged kerbs.
Worn and pitted surfaces
Concrete that's sound underneath but rough, flaking or stained on top.
Trip hazards
Lips between slabs on paths, driveways and around commercial sites. Often a job for concrete grinding.
Repair or replace? A quick guide
This is the rough sorting we do when we read your enquiry. The contractor makes the call on site. There's more in our guide: repair or replace a cracked concrete driveway.
| What you can see | Usually means | Likely fix |
|---|---|---|
| Hairline cracks, both sides level | Normal shrinkage | Seal or fill, mostly to keep water out |
| A wide crack with one side higher | The ground has moved | Replace that section and deal with the cause |
| Surface flaking, solid underneath | A worn or weak top layer | Patch or resurface |
| Rust stains and concrete breaking off | Steel is rusting inside | Specialist remedial repair. Patching over it won't last |
| A sunken area that holds water | Soil washed out or settled | Lift or replace, after fixing the drainage |
How a repair job usually runs
Repairs vary more than any other concrete work, but the good ones follow this order.
- 01
Find the cause
Water, tree roots, poor base or rusting steel. A repair that ignores the cause fails again.
- 02
Cut back to sound concrete
Loose and weak material is removed so the repair has something solid to bond to.
- 03
Treat or replace steel
Where reinforcement is exposed, it's cleaned and protected or replaced.
- 04
Rebuild and finish
Repair mortar, new concrete or a resurfacing coat, finished to sit level with what's around it.
What the job changes
Once a section's cracked right through and lifted, a patch buys you a year or two. That's about it. Replacing it on a properly compacted base, with joints in the right places, is what stops the problem coming back.
Drag the handle on the picture to compare before and after.
If the damage runs onto the footpath or crossover, that part belongs to the council: contact City of Newcastle or Lake Macquarie City Council. For work on your side of the boundary, check the contractor's licence with Building Commission NSW.
- BeforeAfter
Path repair
A side path with lifted, cracked sections replaced so it sits level again and the trip hazard is gone.
What affects the cost of a concrete repair?
Repairs are hard to price from a description, so expect the contractor to ask for a photo or a visit.
- The cause
- Fixing drainage or removing a root can cost more than the patch itself.
- How deep it goes
- A surface repair is quick. Cutting out to full depth is a small concrete removal job and a pour.
- Steel
- Exposed or rusting reo adds specialist work.
- Size and number
- Several small repairs in one visit cost less each than one at a time.
- Blending with the old
- New concrete never looks quite the same as old. Resurfacing the whole area costs more but evens it out.
- Access and timing
- Work around trading hours, or in a spot machines can't reach, takes longer.
Concrete repairs questions we get asked
General guidance, reviewed November 2026. Your contractor will advise on your site.
Related
Why does concrete crack?
All concrete shrinks as it cures, which is why control joints are cut into it. Cracks elsewhere usually come from ground movement, tree roots, a thin or poorly compacted base, or loads the slab wasn't built for.
Will the repair look the same as the rest of the concrete?
Not exactly. Patches almost always show, because new concrete is a different colour and texture to weathered concrete. If looks matter, ask about resurfacing the whole area after the repair.
Is my cracked slab a structural problem?
Most driveway and path cracks are not. Cracks in a house slab, a suspended slab or a retaining wall, or any crack that keeps growing, should be looked at by a structural engineer before anyone repairs it.
How long does a concrete repair last?
As long as the cause has been fixed. A crack sealed over moving ground will open again. That's why a good contractor asks what's underneath before quoting.
The trip hazard is on the council footpath. Who fixes it?
The council. Report it to City of Newcastle or Lake Macquarie City Council. We can only help with concrete on your own property.
Can you help with a small repair?
Send it through. Small jobs are harder to place, and we'll tell you if we can't find anyone for it.
Tell us about your repair job
A minute on the form. We'll send a licensed repair specialist and they'll call you to quote.