Austin's Coal Tar Sealant Ban: What Property Managers Need to Know

If you manage commercial property in Austin, the sealant your contractor puts on your parking lot is regulated — and getting it wrong can mean fines, liability, and a job that has to be redone.

Austin has one of the strictest pavement sealant regulations in the country. Understanding what's banned, what's compliant, and how to protect yourself isn't complicated, but it does require more than trusting your contractor to figure it out.

What Austin actually prohibits

Austin's regulation goes beyond just banning coal tar. The city originally passed an ordinance banning coal-tar-based pavement sealants within the city's planning jurisdiction — meaning city limits and the extraterritorial jurisdiction (ETJ). The ordinance was later broadened to cover all "high-PAH pavement products."

The current rule defines a high-PAH pavement product as any material containing more than 0.1% (1,000 parts per million) polycyclic aromatic hydrocarbons by weight, used on asphalt or concrete surfaces including driveways, playgrounds, and parking areas. Use of these products is prohibited within Austin's planning jurisdiction, with limited exemptions.

There is also a sales restriction: high-PAH products may not be sold within the jurisdiction unless they're intended for use outside the ETJ.

Why this matters beyond compliance

PAHs — polycyclic aromatic hydrocarbons — are the reason Austin enacted these restrictions. Coal tar sealants typically contain PAH concentrations orders of magnitude higher than asphalt-based alternatives. Research linked coal tar sealant runoff to contamination of Austin-area waterways and sediment, which drove the original ordinance and subsequent expansion.

For property managers, the practical implications extend beyond environmental concern. If your contractor applies a non-compliant product on your lot, you're exposed in three ways:

Regulatory penalties. The ordinance includes fines classified as Class C misdemeanors, with fines not to exceed $500 per offense. Each day a violation continues constitutes a separate offense — so a lot sealed with a banned product could technically accrue daily fines until the situation is remediated.

Liability exposure. If a non-compliant application results in stormwater contamination, the property owner may face additional environmental liability beyond the city ordinance. Austin has separate rules governing pollutant discharge to storm sewers.

Rework cost. If a violation is identified, you may need to address the non-compliant surface — an expense that comes on top of what you already paid for the original application.

What products are compliant

Two categories of sealants meet Austin's requirements:

Asphalt emulsion sealers are the most common compliant alternative. These use an asphalt (petroleum) base rather than coal tar. Major manufacturers like SealMaster produce asphalt-emulsion formulations specifically designed as coal-tar alternatives. They're widely available from suppliers serving the Austin market, including SealMaster and GemSeal distributors in San Antonio.

Acrylic sealers are a premium alternative that offers longer life and UV resistance but at a higher material cost. These are more commonly used in high-visibility or specialty applications.

Both product types perform well in Austin's climate when applied correctly — proper surface prep, correct mix design, appropriate application rate, and adequate curing conditions. The performance gap between coal tar and compliant alternatives that existed a decade ago has largely closed as manufacturers have improved their asphalt-emulsion formulations.

How to verify your contractor is compliant

This is where many property managers get caught. You sign a contract, the work gets done, and you assume the contractor used the right products. But "assume" isn't a compliance strategy. Here's what to require:

Ask for the product Safety Data Sheet (SDS) before work begins. Every commercial sealant product has an SDS that identifies the chemical composition. The SDS will indicate whether the product is asphalt-emulsion-based, acrylic-based, or coal-tar-based. If your contractor can't or won't provide the SDS, that's a disqualifying red flag.

Confirm the product name and manufacturer. A legitimate contractor using compliant products will tell you exactly what they're applying — manufacturer name, product name, and formulation type. "We use sealer" is not an answer. "We use SealMaster LP Sealer, which is an asphalt-emulsion formulation" is an answer.

Include a compliance clause in your contract. Your service agreement should explicitly state that all materials used must comply with Austin's high-PAH pavement product ordinance, that the contractor is responsible for product compliance, and that the contractor will provide product SDS documentation upon request.

Keep the SDS on file. If you're ever questioned about what was applied to your lot — by a city inspector, a tenant, or an environmental authority — having the product documentation on file demonstrates good faith and due diligence.

Common questions from property managers

Does this apply to my property if it's outside Austin city limits but inside the ETJ? Yes. The ordinance applies within the city's planning jurisdiction, which includes the extraterritorial jurisdiction. If you're unsure whether your property falls within the ETJ, check with the city's planning department.

What if my contractor is based outside Austin? The restriction applies to where the product is used, not where the contractor is based. A contractor from San Antonio applying sealant on an Austin parking lot must use a compliant product.

Does this affect crack sealant too? The ordinance covers materials used on asphalt or concrete surfaces. Hot-applied crack sealants are typically petroleum-based and generally fall well below the 0.1% PAH threshold, but it's still good practice to confirm with the product SDS.

Are there exemptions? The ordinance includes limited exemptions, but they don't cover standard commercial parking lot sealcoating. Assume your project requires compliant products unless you've confirmed a specific exemption applies.

Is asphalt emulsion sealer as good as coal tar? For commercial parking lot applications in Austin, yes. Modern asphalt-emulsion formulations provide comparable protection against UV degradation, water infiltration, and chemical exposure. The primary difference is that asphalt emulsion products may require slightly different application techniques — your contractor should be experienced with the specific product they're using.

The bigger picture: Austin's environmental compliance environment

The sealant ban doesn't exist in isolation. Austin has a broader set of environmental and building regulations that affect pavement maintenance operations. These include stormwater discharge requirements (power washing wastewater from sealcoating prep cannot be discharged to storm sewers if it contains pollutants), accessibility standards under the Texas Accessibility Standards (TAS) framework, and local fire code requirements for lot markings.

A contractor who understands the sealant ban but ignores stormwater containment during prep work, or who sealcoats your lot but restripes it with non-compliant ADA dimensions, hasn't really solved your compliance problem. The best approach is working with a contractor who understands Austin's full regulatory landscape — not just one piece of it.

Protect your property and your compliance record

We maintain a documented Austin-compliant materials policy across every job. Every product we use comes with SDS documentation, and we provide product compliance confirmation as part of our standard project documentation.