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INDUSTRY CHECKLIST · WELDING SERVICES

The welding business insurance checklist

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Welding services usually carry general liability, workers' compensation and commercial auto. Welding businesses run shops full of gas and sparks, send mobile rigs to job sites and farms, and produce structural work whose failure is a collapse claim, which puts hot work, products and completed operations under one policy. The general contractor and your landlord ask for proof of each. The checklist below covers who asks and how to check what you have.

Reviewed by Michael LaBarbera, Licensed property & casualty agent, Provident Financial Group · Reviewed Oct 12, 2026 Updated
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Who asks a welding business for what

Who What they usually want to see
General contractors General liability and workers' compensation with a waiver of subrogation, often primary and non-contributory wording and commercial auto
Landlords & commercial leases General liability with the landlord as additional insured, property coverage on tenant improvements and workers' compensation
Enterprise clients & vendor onboarding General liability, professional or cyber liability, workers' compensation and often an umbrella

Each of them wants a certificate, and most want it again at every renewal. A live certificate link from the wallet shows today's coverage to every holder and tells them when it changes.

How to check what you already have

  1. General liability declarations page. Three liability numbers matter: each occurrence, general aggregate and the products–completed operations aggregate. Then the forms list: blanket additional insured, waiver of subrogation and primary and non-contributory wording satisfy every contract; scheduled forms satisfy one.
  2. Workers' compensation information page. Item 3.A must list every state you work in, item 4 must carry the right class codes, and the employers' liability limits should meet what contracts ask. Check that the estimated payroll is close to this year's.
  3. Auto schedule. Every vehicle listed with the right garaging address and use; symbols that include hired and non-owned auto; physical damage with the lender as loss payee where the vehicle is financed.
  4. Equipment schedule. Owned items scheduled above the per-item threshold, a blanket limit for small tools, leased or rented equipment included, and the valuation (replacement cost or actual cash value).
  5. Umbrella schedule of underlying insurance. Each primary policy listed with the limits the umbrella expects; a gap between the two is uninsured.
  6. Property section. Limits for building, business personal property and tenant improvements against replacement cost, the coinsurance percentage, the deductible, and whether flood and earthquake are excluded (they usually are).
  7. Products–completed operations. The aggregate, any vendors endorsement naming buyers as additional insureds, and exclusions for specific products or markets.
  8. Pollution liability. Site-based or contractors form, claims-made or occurrence, the materials named (mold, asbestos, lead, fuels), and transport and disposal coverage.
  9. Hired and non-owned auto. Look for the symbols 8 and 9 or an endorsement by that name on the auto or general liability policy; without it, staff in their own cars are uninsured on company business.
  10. Business owner's policy declarations. Liability limits on the first page, then the property section: building (if you own), business personal property, business income and the named extras such as spoilage, equipment breakdown or employee dishonesty. Confirm the property values are current.
  11. Business income. The limit or actual-loss-sustained wording, the waiting period, the period of restoration and whether extra expense is included.
  12. Equipment breakdown. The limit, the covered equipment, spoilage and business income under breakdown, and the deductible.
  13. Builders risk or installation floater. The project limit, soft costs, theft from the site and the point at which coverage ends (acceptance or occupancy).

What usually goes wrong for welding services

  • A fire at a customer's site from a mobile welding job, with no fire watch and a hot-work warranty on the policy.
  • Structural welds that fail years later, the completed-operations claim carriers rate most carefully.
  • Hot-work warranties in the policy that require a fire watch after the torch goes out; miss it and the fire claim is denied.
  • Damage to the exact thing you are working on is excluded on most general liability forms; installation floaters and care, custody and control endorsements fill that hole.
  • A completed-operations aggregate quietly limited by endorsement; the declarations page looks fine until the forms are read.
  • Theft from a locked truck overnight with no tools floater, or a per-item limit lower than the one tool that mattered.

What underwriters will ask a welding business

  • The split between shop fabrication and mobile work, whether structural work is done to an engineer's spec, and welder certifications
  • Hot-work permits and fire-watch practice
  • Whether any welding or brazing is done inside occupied buildings
  • Residential versus commercial split of the work
  • Whether any work is done above three stories or below grade
  • Years of completed-operations coverage with no gap

Have the answers in the wallet before the renewal and the quote request fills itself in; CoverMatch sends one application to every eligible carrier and lines the quotes up against what you have.

Renewal timing

Audits at year end compare payroll, receipts and subcontractor costs with the estimate, so keep the wallet's size figures and the subcontractor certificates current. Start comparing sixty days before expiration, and ask for the limits the next contract will need rather than the ones the last one did.

Questions people actually ask

What does a hot-work warranty on our policy mean?

That coverage depends on following hot-work rules: permit, clearing combustibles, extinguisher at hand and a fire watch after the work. Break them and the fire claim is contested. Train every welder on them and document each job.

Are structural welds we did covered if they fail?

Under completed operations, when the policy in force includes it and does not exclude collapse or structural work; some carriers do for welders. Certifications, weld inspections and the engineer's spec are the defence; keep them with the job file.

Why do carriers ask about hot work?

A torch or a welder is the most common cause of a large fire claim in the trades, so policies carry hot-work conditions: a permit, a fire extinguisher at hand and a fire watch after the work stops. Follow them and the coverage holds; skip them and the claim is contested.

Does general liability cover damage to a customer's property while I work on it?

It covers damage to the rest of their property, not usually the part in your hands. Many forms exclude property in your care, custody or control, so a welding business that handles valuable items or systems needs an endorsement or an installation floater. The policy explainer in the wallet flags the exclusion when it reads your policy.

A job I finished two years ago just caused damage. Which policy pays?

The general liability policy in force when the damage happens, as long as it still includes completed operations and you kept the coverage continuous. A gap or a switch to a form that excludes completed operations is how a welding business ends up uninsured for old work.

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