In short, sealcoat if the surface is faded, oxidised, or has cracks under 3mm — sealcoating is preventive at $2–$4 per m². Resurface if you’ve got cracks over 3mm, ravelling edges, dips holding water, or aggregate exposed — resurfacing is structural at $40–$55 per m². Sealcoat is paint; resurface is renovation. Here’s the longer story.
Quick decision guide: sealcoat or resurface?
| Symptom | Sealcoat ($) | Resurface ($$$) |
|---|---|---|
| Driveway looks faded and grey | Yes | No |
| Hairline surface cracks under 3mm | Yes | No |
| Cracks 3mm to 10mm wide | No | Yes |
| Loose stones, ravelling at edges | No | Yes |
| Surface dips holding water 24h+ | No | Yes |
| Aggregate exposed everywhere | No | Yes |
| Driveway over 12 years, no surface damage | Yes (maintenance) | No |
| Driveway over 18 years, surface tired | No | Yes |
| Pothole patches >5 across driveway | No | Yes |
If you ticked anything in the Resurface column, sealcoating is wasted money — it can’t fix structural problems. If you only ticked Sealcoat items, you’d be foolish to spend three times more on resurfacing.
What is sealcoating?
Sealcoating is a thin liquid topcoat (1–2mm) applied over existing asphalt. It’s a mix of either bitumen emulsion or coal-tar emulsion with sand, mineral fillers, and water. Sprayed or squeegeed on, dries to a flat black finish.
What sealcoat does:
- Protects against UV oxidation
- Seals out water from hairline cracks
- Restores black colour
- Provides slip resistance with sand
What sealcoat doesn’t do:
- Fill cracks wider than about 3mm
- Fix surface profile (dips, raised areas)
- Add structural strength
- Repair ravelling or potholes
How long does sealcoating last?
3–5 years on the Central Coast before it needs reapplying. Heavily trafficked driveways or full-sun exposure shortens that — every 3 years. Sheltered driveways with light use stretch to 5+ years.
How much does sealcoating cost in Australia?
$2–$4 per m² for residential, $1.50–$3 per m² for larger commercial. An 80m² driveway costs $160–$320. Mostly a labour and materials job — no heavy plant required.
What is resurfacing?
Resurfacing is laying a fresh 25–30mm structural layer of hot-mix asphalt over an existing surface. It’s a proper paving job — paver, truck, roller, hand-edging — done in a day for most residential.
What resurfacing does:
- Adds 25–30mm of new wearing course
- Levels out surface dips and undulations
- Bridges existing cracks (up to 10mm with no growth)
- Restores 12–18 years of life
- Fixes ravelling and aggregate loss
What resurfacing doesn’t do:
- Fix a failed base (asphalt mirrors base failures within 18–24 months)
- Repair structural alligator cracking
- Solve subgrade pumping
- Substitute for full replacement if subgrade is gone
How much does resurfacing cost in Australia 2026?
$40–$55 per m² for a 25–30mm overlay. An 80m² driveway costs $3,400–$4,800. See our full resurfacing guide and when to do it for the seven signs.
How long does a resurface last?
12–18 years with proper sealcoat maintenance every 5–7 years afterwards. Without sealcoating after the resurface, you’re back to needing another resurface in 10 years.
When sealcoating is the right call
You should sealcoat if all of these apply:
- Asphalt is older than 3 years (fresh asphalt doesn’t need sealing — let it cure 6 months first)
- Surface has faded from black to grey
- Cracks are hairline (under 3mm) or nonexistent
- No dips, ravelling, or loose stones
- Last sealcoat was 4+ years ago, or never
Typical situation: 8-year-old driveway, surface is grey, a few hairline cracks. Sealcoat is $250 for an 80m² driveway. Buys you another 5 years before you even think about resurfacing.
Can I sealcoat over a botched asphalt job?
No. If the original install was thin or the base is failing, sealcoating just postpones the inevitable by a year and wastes the money. Look for the structural issues first — if any are present, sealcoating is throwing good money after bad.
Will sealcoating fix small potholes?
No. Sealcoat is paint-thin (1–2mm). Potholes need crack-fill or hot-mix patches first, then sealcoat over the top once they’re cured.
When resurfacing is the right call
You need to resurface if any of these are true:
- Cracks wider than 3mm — water has reached the base
- Surface is ravelling, loose stones underfoot
- Dips holding water for 24+ hours after rain
- Aggregate is exposed across more than 30% of the surface
- Five or more patch repairs scattered through the driveway
- Surface is over 15 years old AND showing wear
Typical situation: 16-year-old driveway, never been sealed, surface is grey-brown with cracks 5–8mm wide and a couple of dips near the garage. Resurface at $40–$55 per m². Buys 12–18 more years. Cheaper than living with it for two years and paying for full replacement.
Can I resurface my driveway every time it gets tired?
Yes, up to a point. Two resurfaces on the same base is fine if the base was solid to start. By the third overlay you’re up at 90–110mm of asphalt — heavy enough that the base may not handle it, and joins to the garage/kerb get awkward. Most driveways get one resurface in their life, then a full strip and rebuild.
Should I sealcoat right after resurfacing?
No — wait 6 months. Fresh asphalt needs to cure and oxidise slightly before sealcoat will bond properly. Sealcoat applied too early peels off in sheets.
The middle ground: crack filling
Between sealcoat and resurface there’s crack sealing. For cracks 3–10mm wide, a hot-applied rubberised crack filler is forced into the crack with an applicator and trowel-finished flush. Looks ugly (you can see the crack lines), but it’s structural — keeps water out of the base.
| Job | Cost per linear metre |
|---|---|
| Routing existing crack | $4–$8 |
| Crack sealing (rubberised) | $6–$12 |
| Combined seal + fill | $10–$18 |
Crack sealing is a good intermediate move on a driveway that’s structurally fine but has a few wider cracks you don’t want to let go. We do it as a standalone job or as prep before a future sealcoat or resurface.
What about resurfacing without proper sealing maintenance?
If you resurfaced 8 years ago and haven’t sealcoated since, the wearing course is on the back half of its life. A sealcoat now might add 3–4 years before you need to think about the next resurface. Worth doing.
If you resurfaced 14+ years ago and never sealed, the surface is probably ready for the next resurface — sealcoating at this point only buys you a year, maybe two.
What’s the lifetime cost of each approach?
Compare two strategies for an 80m² driveway over 30 years:
Strategy A: Sealcoat every 5 years, resurface at year 15
- Years 5, 10: sealcoat ($250 × 2) = $500
- Year 15: resurface ($3,800)
- Years 20, 25: sealcoat ($250 × 2) = $500
- Total: $4,800 over 30 years
Strategy B: No sealcoating, resurface twice (year 10 and year 22)
- Year 10: resurface ($3,800)
- Year 22: resurface ($4,800 — base is more tired so prep costs more)
- Total: $8,600 over 30 years
Sealcoating saves you about $3,800 over 30 years. Plus the driveway looks better the whole time.
Other things to know
Does it matter what time of year I sealcoat?
Yes — temperature matters. Sealcoat needs 15°C+ ambient and 24 hours rain-free to cure properly. October to April is the sweet spot on the Coast. July sealcoats often fail to cure and need redoing.
Do I need to do anything before sealcoating?
Clean the driveway, patch any cracks 3mm+, pull weeds from edges. Don’t pressure-wash the day before — leave 48 hours for water to drain out. Don’t oil-spot patch within 30 days of sealcoating.
Will resurfacing increase my driveway height?
Yes — by 25–30mm. We taper the new surface to existing kerb and garage thresholds so water still flows correctly, but the centre of the driveway rises. If you’ve got marginal clearance under your garage door, mention it before quoting.
For technical reference on Australian asphalt maintenance standards, the Australian Asphalt Pavement Association publishes the AAPA Pavement Maintenance Guide.
FAQs
Should I sealcoat or resurface my driveway?
Sealcoat if the surface is faded with no cracks bigger than 3mm and no dips holding water. Resurface if cracks are wider, you’ve got ravelling or potholes, or it’s been more than 15 years since the original install.
How much money does sealcoating actually save?
Done every 5–7 years, sealcoating extends the time between resurfaces from 10 years to 18+. Lifetime cost over 30 years is around $4,800 with sealcoat maintenance vs $8,600 without. Saves about $3,800 per driveway.
Can sealcoating fix cracks?
Hairline cracks under 3mm wide, yes. Anything wider needs crack-filling first (or a full resurface). Sealcoat is only 1–2mm thick — it bridges nothing structural.
Not sure if your driveway needs sealcoat or resurface? Glenn or one of the crew can take a look — send through the quote form. Honest opinion, no upselling. If sealcoat is what you need, that’s what we’ll quote.
