Welding Business Insurance

Welding has one of the trickier insurance profiles of any small trade. The work involves open flame, sparks, hot metal, structural responsibility, and the potential to cause fire or structural failure. Standard general liability policies often have exclusions that specifically affect welders, and a single bad job without the right coverage can wipe out years of profit.

This article walks through what welders actually need to carry. It's part of the Welding Business guide.

Talk to a licensed insurance broker who has worked with welders specifically. Welding insurance has unusual exclusions and coverage requirements that vary significantly by carrier. A broker who has placed welder policies before is worth significantly more than the cost of finding one. The wrong policy can leave you exposed to a single claim that exceeds your annual revenue.

The five coverages welders need

1. General liability with hot work coverage

Standard general liability covers customer property damage and bodily injury. For welders, the critical add-on is hot work coverage. Hot work means any operation involving open flame, sparks, or heat that could start a fire. Some general liability policies exclude hot work entirely. Others cover it but exclude specific high-risk work.

Things to ask the broker about specifically:

• Is hot work covered or excluded in this policy?
• Are there specific environments excluded (oil and gas, chemical plants, marine, food processing)?
• Is fire damage to the customer's building covered or excluded?
• What's the per-occurrence limit and the aggregate limit?

Typical limits for solo mobile welders: $1M per occurrence / $2M aggregate. Premiums run $700-$2,000/year depending on the work types and the broker.

2. Completed operations coverage

This is the coverage for liability arising from your completed work. If you weld a structural piece on a customer's building today and that piece fails 6 months from now, completed operations coverage is what protects you.

Many welders carry this as part of their general liability policy, but the limits can be lower than the per-occurrence limit, and some policies have a sunset provision (the coverage expires X years after the work is completed).

Ask the broker:

• Is completed operations included or separate?
• What's the limit on completed operations claims?
• Is there a sunset on the coverage, and if so, how long?

3. Commercial auto

If you have a dedicated work vehicle (truck, trailer, van) that carries your welding rig, you almost certainly need commercial auto insurance, not personal auto with a business endorsement. The reason is that mobile welding equipment makes the vehicle clearly business-use, and personal auto exclusions are usually triggered.

Premiums for commercial auto on a welding truck typically run $1,200-$3,000/year depending on the vehicle, the driving radius, and the coverage limits.

4. Inland marine (equipment coverage)

Welding equipment is expensive ($10,000-$30,000+ for a complete mobile rig) and theft-prone. Inland marine coverage protects the equipment from theft, damage, and loss. Premiums typically run 1.5-3% of the equipment's replacement value per year. For a $20,000 mobile rig, that's $300-$600/year.

Strongly recommended for any welder with significant equipment investment.

5. Workers' compensation

Required if you have any employees in most states. Welding is a high-risk classification for workers' comp, with premiums typically running 6-15% of payroll. This is one of the reasons many welding businesses stay solo as long as possible.

The exclusions that bite welders

These are the coverage gaps that consistently cause trouble for welders who didn't read the fine print:

Pollution exclusion

Some welding work generates fumes, slag, and waste that can be classified as pollution. A grinding operation that throws sparks into a flammable storage area could trigger a pollution claim. Standard general liability has a pollution exclusion. A pollution liability endorsement (or a separate pollution policy) covers this gap.

"Your work" exclusion

Damage to your own work product is often excluded. If you weld a railing and the weld fails, the cost to repair the railing itself is your problem, not the insurer's. Some policies offer broader "your work" coverage at a higher premium.

Structural failure / engineered work

Some policies exclude or limit coverage for structural failures on engineered structures (buildings, bridges, pressure vessels). If you do this kind of work, you need a policy that specifically covers it, and you may need professional liability insurance in addition to general liability.

Hot work in specific environments

Some policies exclude hot work in oil and gas environments, chemical plants, food processing facilities, or marine settings. If you work in any of these environments, get the exclusions in writing and know what you're not covered for.

Aircraft, ship, and pressure vessel work

Code work on these structures requires specialized coverage that standard general liability doesn't include. If you do ASME, API, or similar code work, you need specialty insurance.

What we'd actually carry

For a solo mobile welder doing typical farm, ranch, and construction work, no employees:

• General liability with hot work coverage: $1M / $2M, ~$1,000/year
• Commercial auto on the work truck: ~$1,800/year
• Inland marine on the welding equipment: ~$400/year
• Completed operations included in GL: confirmed in writing
• No workers' comp (no employees)
• No pollution liability (no high-risk environments)

Total year-1 insurance: about $3,200/year, or $267/month.

For a solo mobile welder doing certified structural work on commercial sites:

• General liability with hot work coverage: $1M / $2M, ~$1,400/year
• Commercial auto: ~$1,800/year
• Inland marine: ~$400/year
• Completed operations: extended limits, ~$300/year additional
• Pollution liability endorsement: ~$500/year
• No workers' comp (no employees)

Total: about $4,400/year.

For a small welding shop with 2 employees doing fabrication:

• General liability: $2M / $4M, ~$2,500/year
• Commercial property on the shop and equipment: ~$2,000/year
• Workers' comp on 2 employees: depends on payroll, ~$5,000-$10,000/year
• Commercial auto on shop vehicle: ~$1,500/year
• Inland marine: ~$600/year
• Pollution liability: ~$700/year

Total: about $12,000-$17,000/year.

Questions to ask the broker

1. What's the per-occurrence limit and aggregate?
2. Is hot work covered or excluded? Get specifics on environments.
3. Is completed operations included? What's the limit and is there a sunset?
4. What chemicals or environments are excluded?
5. Is fire damage to customer property covered?
6. How is "your work" handled?
7. Can I add additional insureds for commercial customers who require it?
8. What's the deductible?
9. Are there any required safety practices (hot work permits, fire watch, etc.) for coverage to apply?
10. How are claims handled and what's the response time?

If the broker can't answer most of these without hesitation, find another broker.

Next steps

• How to Start a Welding Business - the sequence
• Welding Business Plan - what to put on paper
• Welding Business For Sale - if you're buying an existing operation

Or back to the Welding Business guide for the rest.