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In a shared shop, a TIG arc can injure people who are several feet away from the weld. The risk is not only the bright visible light. Ultraviolet and infrared radiation can cause eye injury and skin exposure, while reflected light can reach workers who are not looking directly at the torch. A proper welding screen with curtains creates a controlled work area without requiring every person in the shop to wear a welding helmet.
What a Welding Screen Does
A welding screen blocks or reduces arc radiation and contains some sparks and spatter. It does not make the welding area safe by itself. The welder still needs a correctly shaded helmet, gloves, clothing, and ventilation. Anyone who enters the screened area may also need suitable eye and face protection.
Most screens use flexible PVC curtains hung from a steel or aluminum frame. The curtain can be opaque, translucent, or clear enough to see movement and general activity behind it. Transparent curtains are useful for supervision and traffic awareness, but they are not automatically safe for viewing an arc. Check the manufacturer’s stated shade or filtration rating rather than judging protection by color alone.
For TIG work, especially with a high-frequency start or a bright aluminum arc, use a curtain specifically sold for welding radiation control. Ordinary clear vinyl, shower curtains, tarps, and tinted plastic intended for room dividers are not substitutes.
Choosing Curtain Material and Shade
Welding curtains are commonly made from PVC in thicknesses around 14 to 30 mil. Thinner material is lighter and easier to move, but it tears more easily and offers less resistance to sparks. A heavier curtain lasts longer around fabrication tables and grinding areas, although it makes a mobile screen harder to roll.
| Screen type | Best use | Advantages | Limitations |
|---|---|---|---|
| Opaque welding curtain | Dedicated TIG or MIG booth | Strongest visual isolation; good privacy | Blocks supervision and shop visibility |
| Translucent tinted curtain | Shared shops and training areas | Reduces arc brightness while showing movement | Protection depends on the stated shade rating |
| Strip curtain | Doorways and frequently used openings | Easy access; less air movement than an open bay | Gaps can leak light and allow sparks through |
| Rigid folding screen | Occasional work or changing layouts | Fast to position; no ceiling hardware required | Can tip or leave gaps in windy or busy areas |
Color is a poor way to choose protection. Green curtains are common, while orange and bronze curtains can make it easier to see activity behind them. The important details are the product’s welding-radiation rating, fire-retardant construction, and intended use. If the manufacturer does not provide a rating or safety data, skip that product.
Do not confuse a welding curtain’s optical shade with a helmet’s lens shade. A screen is positioned between the arc and other people; it is not normally a viewing filter for someone standing close to the weld.
Size and Layout Matter More Than Color
A screen should extend far enough beyond the workpiece to block direct and reflected views of the arc. For a small bench, a three-sided enclosure is usually more effective than one narrow panel. Leave enough room for the welder, gas cylinder, torch lead, and workpiece without forcing the curtain to bow open.
As a starting point, a mobile frame about 6 feet wide and 6 to 7 feet high works for many repair stations. Larger fixtures may need 8-foot panels or multiple connected sections. Place the lower edge close to the floor, but do not create a trip hazard. Gaps of several inches at the sides can allow a direct line of sight to the arc, especially for someone seated nearby.
Keep the screen at least several feet from the weld when practical. This reduces heat and spatter damage and gives the curtain room to move without touching the work. Do not use the curtain as a barrier against heavy grinding sparks, molten slag, or an open flame. Use a separate spark-resistant welding blanket or rigid metal shield where those hazards exist.
Portable Versus Fixed Screens
Portable screens are the better choice when several people share one bay or the shop layout changes. Look for locking casters, a wide base, and a frame that does not flex when the curtain is pulled. A lightweight screen is convenient but can roll or tip when a curtain catches ventilation airflow.
Fixed curtain tracks make sense for a permanent welding area. Overhead tracks keep the floor clear and allow curtains to overlap. Overlap adjacent panels by roughly 6 to 12 inches so a person walking past the booth cannot see the arc through a seam. Tracks also make it easier to replace damaged curtains without dismantling the frame.
A cheaper folding screen is fine for occasional TIG repairs if it is tall enough, stable, and used in a low-traffic area. It is a poor choice for a production cell where the screen is moved dozens of times each day.
Safety Checks and Common Failure Modes
Before welding, stand where nearby workers normally stand and check for a direct view of the arc around every edge. Also check shiny walls, stainless benches, and polished floors that can reflect radiation around the screen. Reposition the booth or add a second panel rather than relying on people to look away.
Inspect curtains for pinholes, tears, hardened sections, scorch marks, and excessive discoloration. A small hole at eye level can defeat an otherwise good enclosure. Replace curtains that have become brittle or that no longer hang flat. Keep flammable materials, solvents, cardboard, and compressed-gas hoses away from hot curtains.
Use the flame-retardant replacement welding panels specified for the frame. Do not patch a curtain with duct tape or substitute clear plastic. Confirm that the replacement panel has the same welding-radiation rating as the original.
What to Buy for a Shared Shop
For most shared TIG areas, choose a translucent or opaque flame-retardant PVC screen with a 6- to 7-foot frame, locking casters, overlapping panels, and a published optical rating. Add a welding blanket if grinding or substantial spatter occurs nearby. If supervision is important, use rated translucent panels on the viewing side and opaque panels where direct exposure is most likely.
For a small home shop, a basic two-panel portable welding screen with locking casters is usually sufficient. For a school, repair business, or production floor, spend more on a stable frame, replaceable curtains, and an overhead track. The best screen is the one that stays positioned, has no line-of-sight gaps, and can be inspected and repaired before the next weld.