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Rubberized crack filling

Cracks wider than about a quarter inch get hot-applied rubberized sealant, which stays flexible through a Pennsylvania freeze–thaw cycle instead of cracking with the pavement. This is the single highest-return maintenance job on asphalt: water reaching the base course is what actually destroys a driveway, and a sealed crack keeps it out.

Get a free estimate(610) 510-6622

What the job includes

  • Cleaning and drying every crack before filling — sealant will not bond to a dirty or damp crack
  • Routing where a crack is too narrow to accept sealant properly
  • Backer rod in deep cracks so the sealant is not simply swallowed
  • Hot-applied rubberized sealant, not cold pour
  • Squeegee finish flush with the surface

When you need it

  • Cracks you can fit a coin into
  • Cracks running the length of the driveway, usually along the center or the edges
  • Grass or weeds growing up through a joint — that means the crack reaches soil
  • Before any sealcoating, always

How it runs

  1. Step 1

    Clean

    Cracks are blown out and dried. Sealant applied over dirt or damp lifts within a season.

  2. Step 2

    Rout if needed

    A crack too narrow to take sealant is opened to a consistent width so it can be filled properly rather than skinned over.

  3. Step 3

    Fill hot

    Hot-applied rubberized sealant flows into the full depth of the crack and bonds to both faces.

  4. Step 4

    Finish

    Squeegeed flush so it sheds water and does not catch a snow shovel.

Specifications

Threshold
Cracks wider than ¼ inch
Material
Hot-applied rubberized sealant
Set time
Minutes, not hours
Cold weather
Runs through winter
Before sealcoating
Always — crack filling comes first

Where

Delaware County, Pennsylvania — Brookhaven, Aston, Media, Springfield, Ridley Park, Swarthmore, Wallingford, Nether Providence and the surrounding townships. Chester County by arrangement.

Owner-operated by Sean McCullough, serving Delaware County since 2016 — 10 years.

Questions about crack filling

How wide does a crack have to be before it needs filling?

About a quarter inch. Narrower than that and sealcoat will bridge it; wider and the sealcoat will simply follow the crack down and leave it open. Cracks over a quarter inch get rubberized filler before any coating.

Is hot-applied rubberized filler better than cold pour?

Yes, and it is the difference between a repair that lasts and one that does not. Cold pour costs less, shrinks as it dries, and typically fails within a season. Hot-applied rubberized sealant bonds to both faces of the crack and stays flexible through freeze–thaw.

Can crack filling be done in winter?

Yes. Unlike sealcoating, hot-applied crack sealing does not need 50°F. Winter is when it matters most — water sitting in an open crack expands every time it freezes, and that is what turns a crack into a failed base.

Will crack filling be invisible?

No. Filled cracks read as black lines, slightly proud or flush depending on depth. Sealcoating afterwards makes them far less noticeable, but the honest answer is that a repaired crack still looks like a repaired crack. The alternative is a pothole.

Related work

Driveway Sealcoating

Sealcoating is a protective coating applied over asphalt to shield the binder from UV, water, oil and oxidation.

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Asphalt & Pothole Patching

Patching removes a trip or tire hazard and stops water reaching the base through a hole.

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Sawcut Patchwork

Sawcut patchwork is the full-depth repair: the failed section is cut out to clean square edges with a saw, removed down to sound base, and replaced with new asphalt compacted in lifts.

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