Roofing Pollution Exclusion: Asbestos, Tar and Fumes

A roofer’s general liability policy usually excludes pollution, and the exceptions that matter on a roof depend on which pollution exclusion is on your policy. Hot tar, coating vapors and old asphalt roofing that may contain asbestos can all turn a routine job into a claim your general liability carrier may refuse to defend. A separate contractors pollution liability policy is the usual way to fill that gap.

This guide is for Arizona roofing contractors and the people who buy insurance for them. It is general education, not legal advice, and it does not replace the policy wording or an environmental professional.

Three terms matter for everything below:

• Pollutant is a solid, liquid, gas or thermal irritant or contaminant, such as vapor, fumes or chemicals, as policies typically define it. Courts have applied that idea to roofing materials.
• Total pollution exclusion is an endorsement, such as ISO CG 21 49, that replaces the standard pollution exclusion and removes its exceptions, including the contractor jobsite exceptions.
• Contractors pollution liability (CPL) is a separate policy written for pollution conditions caused by contracting work. It is not part of a standard general liability policy.

Does a roofer’s general liability policy cover tar, fumes or asbestos?

Possibly in part, and the answer turns on exact wording. The standard ISO general liability form excludes pollution but keeps limited exceptions. According to a form summary of CG 21 49, that endorsement removes all of them, including heating equipment, contractor jobsite work, hostile fire and mobile equipment fluids. It also excludes cleanup and remediation costs, and governmental claims for them. The same source lists less restrictive alternatives, CG 21 55 and CG 21 65, that keep some of the exceptions. Carriers also write their own forms, so the edition on your policy is what counts.

Two federal court decisions show how far apart the outcomes can be:

• Fumes inside a building. In Pennsylvania National Mutual Casualty Insurance Co. v. Block Roofing Corp. (E.D. Va., December 14, 2010), a hospital worker sued a roofer over vapors released during roof work. The policy’s exception covered injury sustained within a building from fumes of materials brought into that building. The court held that the roof is part of the building and that the carrier owed a defense. It deferred any duty to indemnify, and the umbrella policy had no such exception.
• Tar into a lake. In Mesa Underwriters Specialty Insurance Co. v. Myers (N.D. Ohio, August 16, 2016), a client alleged that roofing tar escaped from a roof into Lake Erie. The court found the sealant was a pollutant, applied the policy’s total pollution exclusion and held the carrier had no duty to defend.

These are two decisions applying other states’ law to their own policies. They are not Arizona rulings and they do not predict how your claim would turn out. They show why the exclusion on your declarations and endorsement list matters before a loss.

Which roofing exposures fall into the pollution gap?

Use this as a question list for your agent. “May” means the answer depends on the actual policy.

How does asbestos change a roofing tear-off?

Federal rules treat many asphalt roofing products as a defined category of material. In 40 CFR 61.141, Category I nonfriable asbestos-containing material includes asphalt roofing products with more than 1 percent asbestos. That material is generally regulated once it becomes friable or has been or will be sanded, ground, cut or abraded, which can describe a tear-off.

Under 40 CFR 61.145, the owner or operator must thoroughly inspect the affected part of a facility for asbestos, including nonfriable materials, before demolition or renovation starts. When regulated material meets the thresholds, such as 160 square feet, notice is due at least 10 working days before work begins. EPA’s program summary says residential buildings with four or fewer dwelling units are excluded.

In Arizona, notifications go to ADEQ or, in some counties, a local air agency. Check the ADEQ asbestos program for who receives the notice for your job site, and confirm roofing-specific questions with the agency. Compliance is a legal question on its own. For insurance, the point is narrower: an asbestos surprise on a job is a reason to ask now whether any policy responds, and whether it also covers the cost of stopping work.

What does contractors pollution liability add?

A CPL policy is written for pollution conditions caused by contracting work. Terms vary by carrier, so compare the actual policy on these points:

• Coverage trigger and timing. A 2015 article in NRCA’s Professional Roofing magazine notes that pollution and errors-and-omissions coverage is written on a claims-made basis. Changing carriers without carrying over the retroactive date can leave a gap.
• Retention. The same article describes a per-claim retention the contractor funds, which differs from a general liability deductible.
• Asbestos wording. The NRCA-sponsored guidance says many pollution endorsements only amend part of the general liability exclusion, which matters when you disturb asbestos already on site. Ask for the asbestos terms in writing.
• Cleanup, defense and subcontractors. Does it pay third-party cleanup, legal defense and incidents caused by your subcontractors?
• Project versus annual. Some contractors buy pollution coverage for a single large project and others carry an annual policy.

We have not quoted pricing, because it depends on the carrier, your operations and your loss history. PrimeRisk does not promise that any carrier will offer a given form for your roofing business.

Hypothetical: coating vapors and an air intake

This example is hypothetical and simplified. A Phoenix-area roofer recoats a flat commercial roof on a small office building. Vapors enter through the building’s air intake, and several office workers report symptoms. The building owner sends a demand letter to the roofer.

• If the roofer’s general liability policy uses the standard exclusion with a building-fumes exception, the carrier may owe a defense, as in the Virginia decision.
• If the policy carries a total pollution exclusion, the carrier may deny the claim at the start, and the roofer may have to pay defense costs unless a pollution policy responds.
• If the roofer also has an umbrella, the same question applies to its wording, because the court in the Virginia case noted that the umbrella there had no exception.
• The outcome depends on the actual policies, the facts and the law. Report any claim or demand to your insurer promptly.

What should you check before your roofing renewal?

1. The pollution exclusion on the general liability policy: form number, edition and any endorsement that replaces it.
2. Whether an asbestos, silica or lead exclusion appears anywhere on the policy.
3. Whether the umbrella or excess policy follows the underlying pollution wording or adds its own.
4. Whether any policy pays cleanup if a spill reaches a drain, pool or neighboring property.
5. Whether you carry or need CPL, and if so, its retroactive date, retention and asbestos terms.
6. Your contract language: does a general contractor or building owner require pollution coverage or an indemnity for environmental claims?
7. Your tear-off process for pre-1990s roofs: who inspects, who tests and who decides to stop work if something suspicious turns up.

Frequently asked questions

Does general liability cover roofing tar or fumes?

It depends on the pollution exclusion on your policy. Some forms keep an exception for fumes from materials you brought into a building, while a total pollution exclusion removes that exception. Read the exclusion edition and endorsements, and ask whether your umbrella follows the same wording.

Is asbestos covered under a roofer’s general liability policy?

Often not. Industry guidance published by NRCA says that when a contractor removes or repairs asbestos already on site, general liability is excluded unless an endorsement changes the exclusion. Ask your agent whether the policy has an asbestos exclusion and whether a pollution policy responds to asbestos disturbance.

What is contractors pollution liability insurance for roofers?

It is a separate policy that can respond to pollution conditions caused by your work, such as a spill, vapors or disturbed materials. Terms vary: ask about claims-made coverage, the retroactive date, the retention, cleanup costs, subcontractors and any asbestos wording.

Does a roofing job need asbestos testing before tear-off?

Federal renovation rules in 40 CFR 61.145 require a thorough inspection for asbestos, including nonfriable materials, before covered renovation work begins. EPA’s summary says residential buildings with four or fewer units are excluded. Confirm which rules apply to a specific job with the agency or a qualified professional.

Who can I contact about roofing contractor insurance in Arizona?

Contact PrimeRisk Insurance Solutions in Queen Creek, Arizona, or book a conversation with Kody Houk, Founder & Principal. Start with the review form above and share your declarations pages and endorsement list. A coverage review is not a claim decision or a guarantee of coverage.

Request a roofing coverage review with your contact details and choice of a call or email.

Coverage descriptions are general education. Actual coverage depends on policy wording, endorsements, facts and applicable law. This article is not legal advice or an environmental compliance guide. Case summaries and regulations were reviewed October 15, 2026, and the NRCA article is from 2015, so forms and carrier practices may have changed. See also roofing GL exclusions that cost claims.