How to Weld Overhead Without Burning Yourself or Getting Drips

Overhead welding is one of the most challenging positions in the trade — molten metal wants to fall, and you're directly underneath it. With the right setup, adjusted machine settings, and proper personal protective equipment (PPE), you can weld overhead safely and produce a solid, clean bead. That said, if the work is structural or safety-critical, it's worth calling a qualified welder.

Why Overhead Welding Is Different

In flat or horizontal welding, gravity works with you. Overhead, gravity works against you — the weld pool wants to sag and drip. This means you need to:

• Work faster to keep the pool small and controlled
• Reduce your heat input so the metal doesn't become too fluid
• Use the right technique to push the pool rather than let it run

Understanding these fundamentals is the foundation of safe, effective overhead welding.

Essential PPE — Don't Skip Any of It

Burns from overhead welding come from spatter and drips falling onto exposed skin or clothing. Before you strike an arc, make sure you have:

• Auto-darkening welding helmet — keeps your hands free and your eyes protected at all times
• Leather welding jacket or heavy leather sleeves — fabric burns; leather doesn't. This is non-negotiable for overhead work
• Leather welding gloves — full gauntlet style to protect your wrists and forearms
• Leather boots — no synthetic materials near the work area
• Welding cap or beanie — worn under your helmet to protect the top of your head from spatter
• Ear protection — spatter can enter the ear canal
• Respirator or welding fume extractor — fumes rise, and overhead welding puts them directly in your breathing zone

WorkSafe NZ has clear guidance on PPE requirements and welding fume hazards. Welding fumes are a serious health risk — always ensure good ventilation or use extraction equipment.

Machine Settings for Overhead Welding

The key adjustment for overhead welding is reducing your amperage compared to what you'd use in a flat position. A good starting point is to reduce your normal flat-position amperage by roughly 10–15%. This keeps the weld pool smaller and less likely to sag or drip.

For MIG welding, a slightly shorter arc length helps control the pool. For stick welding, E6013 electrodes are forgiving for beginners in overhead position, while E7018 (low hydrogen) is preferred for structural work.

Technique: How to Move the Electrode or Gun

Body Position

Get comfortable and stable before you start. Brace your arms against a solid surface where possible. Fatigue causes shaking, which causes poor beads and accidents. Never stretch or reach — reposition yourself instead.

Travel Speed

Move faster than you would in flat position. A faster travel speed keeps the pool small and reduces the chance of drips. If you see the pool starting to sag, speed up or briefly lift the arc.

Weave or Stringer?

For most overhead work, stringer beads (straight, narrow passes) are easier to control than wide weave patterns. Keep the bead narrow and make multiple passes if you need to fill a joint.

Electrode/Gun Angle

• For MIG, hold the gun at roughly 90° to the work surface (perpendicular), with a slight drag angle (5–10°) in the direction of travel
• For stick, a similar perpendicular angle works well — avoid excessive tilt
• Keep your arc length consistent and as short as practical

Watch the Pool, Not the Arc

Train your eye to watch the trailing edge of the weld pool, not the bright arc itself. This tells you whether the pool is staying flat or starting to sag.

Preventing Drips

• Lower your heat — the single biggest cause of drips is too much amperage
• Keep moving — pausing lets heat build up and the pool to grow
• Use the right filler/electrode — some consumables are specifically rated for all-position use; check the packaging
• Tack weld first — ensure the joint is properly fitted and tacked so you're not fighting gaps that demand more heat
• Clean the base metal — mill scale, rust, paint, and oil all cause porosity and erratic arc behaviour, making control harder

Workspace Setup

Before you start, clear the area below of anything flammable. Spatter and drips will fall — that's unavoidable. Use a welding blanket on the floor and on any nearby surfaces. Make sure you have a clear exit path in case something catches alight, and keep a fire extinguisher within reach. WorkSafe NZ recommends a fire watch period after welding is complete.

When to Call a Professional

Overhead welding on structural steel, load-bearing frames, trailers, roll cages, or anything safety-critical should be done by a qualified welder — ideally one with a current weld procedure qualification for the position and material. Poor overhead welds can look acceptable on the surface while hiding internal defects like porosity or lack of fusion.

In New Zealand, structural welding work may need to comply with NZS/AS 1554 (structural steel welding standard) and could require inspection or certification depending on the application. If you're unsure whether your project needs a consent or certified welder, check with your local council or MBIE Building Performance.

You can find qualified, experienced welders in your area right here on tradedirectory.co.nz.

Sources & Further Reading

• WorkSafe NZ — Welding Hazards
• MBIE Building Performance — Building Code
• Standards NZ — Welding Standards
• BRANZ — Construction Best Practice
• Bunnings — Welding Equipment & PPE
• Mitre 10 — Welding Supplies