Sealing guide · Perth
Is it cheaper to seal or replace a tired driveway?
Almost always cheaper to seal, if the slab is still sound. A stained, greyed, tired driveway usually has a perfectly good structure under a cosmetic problem, and cleaning and sealing it costs a fraction of ripping it up. We only say replace when the concrete itself has actually failed, and we will tell you when it has.
The honest answer
A tired slab is usually a clean, not a skip bin.
Here is the quick version. Tearing up an old driveway and pouring a new one runs into the thousands, before you count the demolition, the cartage, the new pour and the weeks of no driveway. Cleaning and sealing the slab you already have is a small fraction of that. So the real question is not seal versus replace on price, because on price sealing wins easily. The real question is whether your slab is sound enough to be worth sealing, or genuinely failed enough to need replacing. Most of the tired driveways we see are the first kind wearing the face of the second.
Seal the slab you have
A fraction of the cost
Our sealing is $16/m² all-in, with a $950 minimum, cleaned, sealed and registered under a 10-year guarantee. On a stained but sound driveway that is the whole fix: the colour comes back and it is protected going forward.
Rip up and repour
Thousands, and weeks
Replacement means demolition, cartage, a new pour and a cure, and no usable driveway while it happens. It runs to many times the cost of sealing. Worth it when the concrete has failed. A waste when the concrete is fine and just looks tired.
The deciding question
Cosmetic or structural?
Staining, greying, tyre marks and a dull or peeling old sealer are cosmetic, and a clean and seal fixes them. Moving cracks, sinking and crumbling aggregate are structural, and no sealer fixes those. That line decides it.
Why a stained driveway fools people: concrete that has never been sealed drinks in oil, tannins and grime and greys off in the sun, so it looks far worse than it is. Owners assume worse-looking means worn out and start pricing a replacement. Nine times in ten the slab underneath is completely solid, and the ugliness is exactly what a clean and seal is built to lift.
Read your own slab
Seal it, or replace it: how to tell.
You can size this up yourself before anyone quotes you. Walk the driveway and sort what you see into two piles: how it looks, and how it sits. Looks are cosmetic and seal away. How it sits is structural, and that is the only thing that pushes a driveway toward replacement.
- Seal it if it is only tired to look at. Stains, oil patches, greying, tyre marks, a faded colour or a worn and patchy old sealer are all surface. A clean and seal brings them back.
- Seal it if the cracks are fine and still. Hairline cracks that have not moved are normal in concrete. They are cosmetic, and sealing over a sound, stable slab is completely fine.
- Replace it if the slab has moved. Sections that have sunk, lifted or heaved, usually from tree roots or ground movement, are structural. Sealing cannot lift them back.
- Replace it if the concrete is breaking up. Aggregate popping out underfoot, crumbling edges, or wide cracks you can fit a coin into mean the concrete itself has failed. Rusting steel showing through is the clearest sign of all.
Why sealing brings it back
The slab is fine. It is the surface that is unprotected.
A tired driveway is almost always a good slab with an unprotected surface. Bare concrete is porous, so oil, tannins from leaves, and grime soak straight in and the sun greys it off. Cleaning lifts what has settled in the top, and sealing changes what happens next, so the same driveway stops drinking in the next round of marks.
Clean first, so you are protecting the real slab
Most of what makes a driveway look finished is grime and old contamination sitting in the top of open concrete. A proper clean lifts it, so you often get most of the visual win before a drop of sealer goes on. What is left is the actual condition of the slab, which is what tells you whether to seal or replace.
Then seal, so it stops drinking in the next round
Our coating is a mineral sol-gel that anchors into the mineral and pore structure of the concrete, breathable and colourless, protecting right at the surface where oil, tyre marks and weather land. It is the one and only next-generation sol-gel surface protective coating in Australia, and nothing else works like it. Bare concrete drinks; a sealed surface sheds.
And it does not put you on the reseal treadmill
The cheap films that driveways come with peel and whiten and have to be stripped before you can redo them, which is its own recurring cost. Ours holds for years and tops up over itself without stripping. That is a real part of the seal-versus-replace maths, because a seal you have to strip and redo every couple of summers is a hidden cost the brochure never mentions.
That is the short version. The four real-world resistances a driveway actually needs, oil, abrasion, chemical and UV, are set out in what a sealed surface actually resists, and how a seal holds up and tops up over time is in what a seal does, and what it does not.
When we say replace
Sometimes a driveway really is too far gone.
We would rather lose the job than seal over a problem, so here is the honest limit. Sealing protects a sound surface. It is not a structural repair, and it cannot save a slab that has actually failed. If the concrete has sunk or heaved so sections no longer sit level, if wide cracks have opened and keep moving, if the aggregate is crumbling and popping out underfoot, or if steel reinforcement is showing through and rusting, then no coating fixes that, and sealing it would only hide a problem that keeps getting worse. That is a replacement, or a proper structural repair, and if that is what you have we will tell you plainly rather than take your money to seal it. The good news is that this is the rare case. Far more often the slab is solid and the tired look is exactly what a clean and seal is for.
See it on your driveway
Find your kind of concrete.
Whether a clean and seal will bring your driveway back, and what that looks like, depends on the finish you have. Start with yours.
Concrete · optimal
Exposed aggregate
The washed-pebble driveway that greys off and often came with a film that whitened and peeled. See how a clean and seal brings the stone colour back and protects it without a rip-up.
Read the guideConcrete · optimal
Plain / broom-finish concrete
The standard grey slab that drinks in oil and tannins. How cleaning lifts the stains and sealing stops the next lot soaking in, for a fraction of a repour.
Read the guideConcrete · strong
Stamped / decorative concrete
Patterned and stencilled driveways that came with a coating and have gone matte or patchy. How the old film is dealt with and a proper seal put back.
Read the guideSeal or replace, answered
The real questions.
Is it cheaper to seal or replace a tired driveway?
In most cases sealing is far cheaper, because tearing up a driveway and pouring a new one runs into the thousands, while cleaning and sealing the slab you already have is a fraction of that. The catch is that sealing only makes sense when the slab is structurally sound and the problem is cosmetic: staining, greying, tyre marks, a dull or peeling old sealer. If the concrete itself has failed, with moving cracks, sinking or crumbling, then no sealer fixes that and replacement is the honest answer.
My driveway is badly stained and greyed. Is it too far gone to seal?
Almost never, if the slab underneath is still solid. Staining, greying, oil marks and a tired dull finish are surface problems, not structural ones. A proper clean lifts most of it, and sealing brings the colour back and protects it going forward. A stained slab looks worse than it is, and looking worse is exactly what a clean and seal fixes for a fraction of a replacement.
When is replacing a driveway actually the right call?
When the concrete itself has failed rather than just aged. The honest replace signals are cracks that have opened up and shifted, sections that have sunk or heaved from tree roots or ground movement, aggregate crumbling and popping out underfoot, or exposed and rusting steel reinforcement. Sealing protects a sound surface; it cannot hold a failing slab together. If that is what you have, we will tell you straight rather than seal over a problem.
Can you seal a driveway that already has an old peeling sealer on it?
Yes, but the failed film has to come off first. A peeling or whitened film is stripped back to a sound, open surface, and then the new coating goes on and bonds into the surface itself rather than sitting on top waiting to peel again. That prep is part of the job. It is still far cheaper than a full replacement, and you end up with a seal that does not repeat the peel. If that is your driveway, here is why the old one peeled.
Does sealing fix cracks in a driveway?
No, and we will not pretend it does. A sealer protects the surface against staining, oil, UV and wear; it is not a structural repair and it does not glue a cracked slab back together. Fine, stable hairline cracks are normal in concrete and sealing over them is fine. Wide, moving or lifting cracks are a structural issue, and that is a conversation about repair or replacement, not sealing.
Keep reading
Related guides.
Cost
What it costs to seal a driveway
The real Perth numbers for sealing a driveway, so you can put the seal side of the maths next to a replacement quote.
Read the guideCare
Maintaining a sealed driveway
The easy upkeep that keeps a sealed driveway working and stretches the years between top-ups, once you have saved the slab.
Read the guideThe science · pillar
What a sealed surface resists
Oil, abrasion, chemical and UV: the four things a driveway actually gets hit with, and how a seal stands up to each.
Read the pillarGet a quote
Save the slab before you skip it.
Send us a photo or book a look. We will tell you honestly whether your driveway is a clean and seal at $16/m² all-in, or genuinely one for replacement. If it is sound, we bring it back and register it under a 10-year guarantee. If it is not, we say so.