Troubleshooting reference
Start with symptoms, rule out homeowner-safe basics, and escalate conservatively when safety, structure, utility service, or water damage is involved.
Call soon
Sealcoat peels, tracks, or stays tacky
Likely causes
- Applied too thick
- Cold/wet weather
- Surface contamination
Homeowner-safe check
Keep vehicles off longer and photograph weather/timing; do not add another coat immediately.
When to call
Call installer promptly for cure and warranty assessment.
Routine
Cracks reopen after filling
Likely causes
- Crack movement
- Poor cleaning
- Wrong filler temperature/material
Homeowner-safe check
Keep debris out and monitor width; crack fill is maintenance, not structural repair.
When to call
Call routinely if cracks are wide, alligatored, or allow water into base.
Call soon
Driveway has alligator cracking
Likely causes
- Base failure
- Oxidized brittle asphalt
- Water infiltration
Homeowner-safe check
Do not expect sealcoat to fix structural failure.
When to call
Call paving/asphalt repair pro for patch or replacement scope.
Call soon
Potholes or low spots hold water
Likely causes
- Base washout
- Poor drainage
- Freeze-thaw damage
Homeowner-safe check
Mark hazards and keep water redirected where possible.
When to call
Call before sealcoat; potholes need patching first.
Routine
Sealer splashes on garage door, concrete, or siding
Likely causes
- Poor masking
- Spray drift
- Rushed edging
Homeowner-safe check
Photograph immediately and avoid harsh solvents on finished surfaces.
When to call
Call installer for cleanup before stains cure.
Call soon
Coal-tar or strong odor concerns
Likely causes
- Coal-tar product
- High VOC exposure
- Local restriction issue
Homeowner-safe check
Keep children/pets away until fully cured and verify product data sheet.
When to call
Call contractor for SDS/product type and local compliance documentation.
Routine
Tire marks appear after parking
Likely causes
- Parking too soon
- Hot tires
- Soft uncured sealer
Homeowner-safe check
Wait longer before parking and avoid turning wheels while stopped.
When to call
Call routinely if marks persist after full cure or sealer lifts.
Call soon
Sealcoat washes off in first rain
Likely causes
- Rain before cure
- Diluted material
- Poor surface prep
Homeowner-safe check
Document rain timing and runoff; do not pay final until failure is addressed.
When to call
Call installer immediately for warranty recoat or refund discussion.
Routine
Edges crumble along lawn or apron
Likely causes
- Unsupported edge
- Vehicle overrun
- Thin asphalt
Homeowner-safe check
Avoid driving on edges and keep soil support even with pavement.
When to call
Call for edge repair/patch before sealing.
Routine
Quote skips cleaning, crack fill, or weather window
Likely causes
- Spray-and-go shortcut
- No cure discipline
- Low-solids product
Homeowner-safe check
Require cleaning, crack treatment, product type, coat count, temperature/rain limits, and traffic timing.
When to call
Call another contractor if prep and cure are only verbal.
Maintenance schedule
Seasonal tasks
Spring
- In spring, photograph new cracks, low spots, and plow scrapes before dirt hides the asphalt failure pattern.
Summer
- During hot weather, clean oil drips quickly and avoid turning parked tires sharply on soft or freshly sealed areas.
Fall
- Before fall sealing, trim grass from edges, clear gravel, and confirm sprinklers will stay off through the cure window.
Winter
- In winter, limit sharp metal plow edges and watch where salt brine attacks thin driveway edges.
Interval tasks
Monthly
- Monthly, note crack growth, alligator areas, standing water, and edge crumbling instead of sealing over structural failure.
Annual
- Yearly, review whether cracks need hot rubber, cold pour, patching, or drainage repair before a cosmetic coat.
Every few years
- Every few years, reassess pavement age, base failure, traffic load, and whether resurfacing is smarter than more sealer.
Cost components
Labor
Surface cleaning, crack preparation, edging, product solids, cure timing, masking, and striping layout decide crew hours; the base scope includes cleaning, edging, oil-spot treatment, crack routing/filling, patch prep, sealcoat application, traffic control, and cure management.
Materials
Material risk sits in asphalt emulsion, crack filler, sand, oil primer, squeegees, spray tips, cones, tape, and striping paint; ordinary allowances cover asphalt-emulsion sealer, crack filler, patch mix, oil primer, sand/additives, masking, barricades, and cleanup supplies.
Permits and inspections
Inspection cost belongs in the quote when commercial lots, coal-tar restrictions, stormwater rules, traffic control, and ADA striping. Ask who files and who meets the inspector.
Broad range discipline
Crack fill, cosmetic sealcoat, patching, striping, and asphalt replacement set the practical budget ladder. Basic sealcoat is modest; crack routing, patching, alligator repair, edge repair, and commercial lots raise labor/material cost.
What moves price
Pushes price up
- Extensive crack fill/patching; added cost is usually tied to surface cleaning
- Oil stains and cleaning; added cost is usually tied to crack preparation
- Large/steep driveway; added cost is usually tied to edging
- Two-coat or commercial traffic control; added cost is usually tied to product solids
Can reduce price
- Clean sound asphalt; lower pricing is likelier when asphalt emulsion is clearly defined
- Simple shape; lower pricing is likelier when crack filler is clearly defined
- Neighborhood batch scheduling; lower pricing is likelier when sand is clearly defined
- Flexible weather window; lower pricing is likelier when oil primer is clearly defined
Hiring red flags
- A quote that shrugs off sealcoat offered over alligator cracking as if it were structural repair is not a trade-ready scope.
- Verification of cleaning, oil priming, and crack preparation is missing from the bidder's process.
- The low number removes weather window, product type, and solids content along with useful proof photos.
- Callback terms never address tire pickup, rain washout, overspray, crack movement, and base-failure exclusions in practical detail.
- Seals alligator cracking as if it were structural repair.
- No product type, coat count, weather/cure limits, or crack-fill terms.
- Applies before rain/cold or on dirty/oily pavement.
- Uses coal-tar product where restricted or without disclosure.
Contract checklist
- Surface cleaning, vegetation trimming, oil-spot treatment, crack routing, filler type, and pothole patching with brands, sizes, locations, and exclusions.
- Sealer product, coal-tar or asphalt emulsion, mix design, sand load, number of coats, and application method before work starts, including who schedules inspections.
- Weather limits, pavement temperature, cure time, driveway closure, sprinkler shutdown, and traffic cones for access, protection, cleanup, and disposal.
- Masking for garage doors, concrete, pavers, siding, curbs, and stripe layout if applicable as unit pricing or written allowances.
- Exclusions for alligator cracking, drainage, base failure, tire marks, rain, and edge crumbling; final paperwork should include photos, manuals, registration proof, and waivers.
- Cleaning, edging, oil treatment, crack routing/fill, patching, and sealcoat product.
- Coat count, additives/sand, application method, temperature/rain limits, and cure time.
- Traffic/parking rules, barricades, overspray protection, and cleanup.
- Structural exclusions for base failure, alligator cracking, potholes, and drainage.
- Warranty/recoat terms and what happens if rain hits early.
Warranty norms
Sealcoat warranties are short and mostly about adhesion when prep and weather were right. They rarely cover moving cracks, alligator base failure, oil contamination, rain before cure, hot-tire pickup, snowplow scraping, or water ponding caused by pavement shape.