Asphalt Crack Repair & Sealing — Central Coast NSW
Cracks are how water gets to your base course. Once that happens, the whole driveway fails fast. BWB does proper crack sealing — rout, clean, hot-pour rubberised sealant. Cheap insurance against a full re-lay.
A real human answers your call. Glenn or one of the crew picks up, not a call centre. Free site visit, written quote.
Why Cracks Matter
A crack isn't just cosmetic. It's a channel for water to get under your wearing course, into the base, and start washing out the foundation that holds everything up.
Water reaches the base
Even hairline cracks let rain into the sub-base. Once water saturates the base, load-bearing capacity drops fast.
Freeze-thaw widens cracks
Trapped water expands every cold night, pries the asphalt apart, doubles the crack width in a season.
Cracks become potholes
The classic sequence: hairline → 3mm crack → alligator cracking → pothole. Crack sealing stops it at step 2.
Resurface cost vs repair
Crack sealing is far cheaper than a hot-mix overlay, and orders of magnitude cheaper than a full dig-out and re-lay.
Buys 5+ years
Proper crack sealing every 2–3 years can buy you another 5–8 years out of pavement that would otherwise need overlay.
Trip & liability risk
Wide cracks in carparks and footpaths are a trip hazard. Strata and commercial owners — fix them before the claim arrives.
Crack Types & Treatment
Not every crack gets the same treatment. We assess and recommend — sometimes a rout-and-fill, sometimes a patch, sometimes the honest answer is "this section needs an overlay".
Linear cracks 3–20mm
The bread and butter — rout to a clean reservoir, blow out, hot-pour rubberised sealant. Sealed and back in service same day.
Alligator / fatigue cracking
Interconnected cracking means the base has failed. Crack sealing won't fix it — we cut out the area and patch with hot-mix.
Edge cracks
Cracking along the edge of a driveway or carpark, often where the asphalt meets concrete. Rout-and-fill plus check for sub-base undermining.
Hot-Pour vs Cold-Pour
Two different products, two different lifespans. We almost always use hot-pour because it lasts.
Hot-pour rubberised
Heated to ~190°C, poured into routed crack, bonds chemically to the asphalt. Flexible, 5–8 year life. Our default.
Cold-pour sealant
Ready-mix from a tub. Faster, cheaper, but stiffer and shorter life (1–3 years). Use for emergency or low-value applications.
What we recommend
Hot-pour for anything you want to last. Cold-pour only for emergency repairs ahead of a planned resurface.
When to Crack-Seal vs Resurface
Honest answer below. Crack sealing is great — until it isn't. We tell you straight.
Crack-seal if…
Cracks are linear, under 20mm wide, less than 25% of the surface. Base is sound. Surface is otherwise OK.
Resurface if…
Alligator cracking over large areas, cracks >20mm, base showing rut or settlement, surface raveling badly.
Full re-lay if…
Base course has failed (you'll see settlement, soft spots, rutting). At this point a hot-mix overlay won't save it.
Recent crack repair & patching jobs
Crack repair questions, answered
How long does crack sealing last?
Hot-pour rubberised sealant: 5–8 years on a properly routed crack. Cold-pour: 1–3 years.
Can you seal cracks in winter?
Yes — hot-pour bonds well at cooler temperatures because it's applied at 190°C. We avoid wet days because moisture in the crack ruins the bond.
What does "rout-and-fill" mean?
We cut a clean reservoir along the crack with a routing wheel — typically 10mm wide, 15mm deep. That gives the sealant somewhere to sit and gives more bonded surface area than just pouring into a hairline crack.
Will my driveway look ugly after?
You'll see the black sealant lines, yes. They cure flush with the surface. Most clients combine crack sealing with a sealcoat afterwards — uniform black finish.
Get a Crack Repair Quote — how fast?
Photos and rough crack length in — written quote in 48 hours. Site visit for larger jobs or commercial sites.
Cracks getting wider? Don't wait for potholes.
Free site visit, written quote, sealed and back in service same day on most jobs.
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