# Problems guides

> What goes wrong: independent, numbers-first guidance from Driveway Sealing Lab.

Canonical: https://drivewaysealinglab.com/problems/

Last updated: 2026-11-08

## Symptoms first, quotes second

Most expensive driveway sealing mistakes start with a symptom described to a salesperson. The table maps the common symptoms to their usual cause — the diagnosis a contractor should confirm before quoting.

 |  | Symptom | Usual cause

 | Alligator cracking | Base failure, not a sealing problem

 | Fading colour | UV and traffic

 | Potholes | Water into the base

 | Edge crumbling | No support at the shoulder

 | Puddling | Grading, not sealer

## What to document

- Photographs with something for scale, taken at the same angle over time.

- Dates: when it started, whether it changes with weather.

- Water: where it goes, where it pools, what it damages.

- Previous work: who did it, when, and with what material.

## What not to do first

Do not accept a repair scope before the cause is named. Patching a symptom is how the same problem returns next season with a bigger invoice. The [methods hub](/methods/) explains what each fix addresses; the [cost hub](/cost/) shows what it should cost.

### When is it an emergency?

When water is entering the structure, when something is structurally unstable, or when a safety system has failed. Everything else can wait for a second opinion.

### Should I get an independent inspection?

For anything structural or over about $5,000, yes. A few hundred dollars for an independent report is cheaper than a wrong scope.

## Guides in Problems

- [Acrylic sealer maintenance](https://drivewaysealinglab.com/acrylic-sealer-maintenance/)
- [Acrylic sealer problems](https://drivewaysealinglab.com/acrylic-sealer-problems/)
- [Alligator cracking: how to prevent it](https://drivewaysealinglab.com/alligator-cracking-prevention/)
- [Alligator cracking: repair options that work](https://drivewaysealinglab.com/alligator-cracking-repair/)
- [Alligator cracking: warning signs to catch early](https://drivewaysealinglab.com/alligator-cracking-signs/)
- [Asphalt emulsion sealer maintenance](https://drivewaysealinglab.com/asphalt-emulsion-sealer-maintenance/)
- [Asphalt emulsion sealer problems and their causes](https://drivewaysealinglab.com/asphalt-emulsion-sealer-problems/)
- [Coal tar sealer maintenance](https://drivewaysealinglab.com/coal-tar-sealer-maintenance/)
- [Coal tar sealer problems](https://drivewaysealinglab.com/coal-tar-sealer-problems/)
- [Cold patch maintenance](https://drivewaysealinglab.com/cold-patch-maintenance/)
- [Cold patch problems: why patches fail](https://drivewaysealinglab.com/cold-patch-problems/)
- [Driveway Sealing repair: when it is worth it](https://drivewaysealinglab.com/driveway-sealing-repair/)
- [Edge crumbling: how to prevent it](https://drivewaysealinglab.com/edge-crumbling-prevention/)
- [Edge crumbling: repair options for driveway edges](https://drivewaysealinglab.com/edge-crumbling-repair/)
- [Edge crumbling: warning signs to act on](https://drivewaysealinglab.com/edge-crumbling-signs/)
- [Fading colour: how to prevent it](https://drivewaysealinglab.com/fading-colour-prevention/)
- [Fading colour: repair options for grey asphalt](https://drivewaysealinglab.com/fading-colour-repair/)
- [Fading colour: warning signs of surface loss](https://drivewaysealinglab.com/fading-colour-signs/)
- [Hot-pour crack fill maintenance: the yearly check](https://drivewaysealinglab.com/hot-pour-crack-fill-maintenance/)
- [Hot-pour crack fill problems: why fills fail](https://drivewaysealinglab.com/hot-pour-crack-fill-problems/)
- [Potholes: how to prevent them forming](https://drivewaysealinglab.com/potholes-prevention/)
- [Potholes: repair options from patch to replace](https://drivewaysealinglab.com/potholes-repair/)
- [Potholes: warning signs before the hole opens](https://drivewaysealinglab.com/potholes-signs/)
- [Puddling: how to prevent standing water](https://drivewaysealinglab.com/puddling-prevention/)
- [Puddling: repair options for standing water](https://drivewaysealinglab.com/puddling-repair/)
- [Puddling: warning signs of a drainage fault](https://drivewaysealinglab.com/puddling-signs/)
- [Driveway Sealing Maintenance Schedule: When to Reseal](https://drivewaysealinglab.com/driveway-sealing-maintenance/)