Protect Yourself Before Hiring
Mobile welding is an industry with a wide range of skill levels. A bad weld doesn't just look ugly — it can fail catastrophically. Here's how to vet a mobile welder before hiring.
1. Insurance — Non-Negotiable
Ask for a certificate of insurance. A professional mobile welder carries:
- General liability ($1M minimum) — covers property damage
- Auto/commercial vehicle — covers the mobile rig
- Workers' comp (if they have employees)
If they can't produce proof of insurance, walk away. A failed weld that damages your property or injures someone could make you liable if the welder is uninsured.
2. Certifications
Look for:
- AWS (American Welding Society) certifications — D1.1 (Structural Steel), D1.2 (Aluminum), D1.6 (Stainless)
- State contractor's license (required in some states for structural work)
- ASME certifications (for pressure vessel or pipe work)
Not every job requires certification, but a welder who has earned them demonstrates commitment to the trade.
3. Their Rig
A professional mobile welder's truck or trailer is their shop. Look for:
- A commercial-grade engine-driven welder (Miller, Lincoln, not a cheap inverter)
- Multiple welding processes (MIG, TIG, stick)
- Organized tooling and gas bottles properly secured
- Fire extinguisher and safety equipment visible
4. Photos of Previous Work
Every good welder has photos. Ask to see work similar to your project. Good welds are:
- Consistent in width and height
- Free of porosity (pinholes), undercut, or spatter
- Properly penetrated (not just sitting on top of the metal)
5. Clear Pricing
Get the pricing structure upfront:
- Hourly rate vs. flat rate for your specific job
- Service call / trip charge
- Materials included or separate?
- Payment terms (deposit? payment on completion?)
6. Communication
A professional welder will:
- Return calls and texts promptly
- Ask detailed questions about your job
- Explain what they plan to do and why
- Give you a realistic timeline
7. Reviews and References
Check Google reviews, ask for references, look at their social media. The best mobile welders are proud of their work and share it publicly.
Red Flags
- "I can weld anything" (specialists are better than generalists)
- No insurance documentation
- Cash only, no receipt
- No photos of previous work
- Can't explain the process they'll use