Metal studs are lighter than wood, immune to rot and termites, and naturally fire resistant. They’re standard in commercial construction and increasingly common in residential projects, especially for interior partition walls. Working with them requires different tools, fasteners, and techniques than wood framing, but the learning curve is manageable once you understand a few key differences.
What Metal Studs Are Made Of
Metal studs are cold-formed steel, meaning sheet steel is shaped at room temperature into a C-shaped channel. The “stud” is the vertical piece, and the “track” is the U-shaped channel screwed to the floor and ceiling that the studs slide into. They come in standard widths (2-1/2″, 3-5/8″, and 6″ are most common) and various gauges. Thinner gauges (like 25-gauge) are used for non-load-bearing partition walls. Thicker gauges (like 18 or 16) handle structural loads. Most studs arrive with pre-punched holes along the web for running electrical and plumbing lines, which saves you from drilling.
Tools You’ll Actually Need
You don’t need a fully different toolkit, but a few specialized items make the job dramatically easier.
Aviation snips are the workhorse. A good pair of offset tin snips handles 99% of cuts on light-gauge studs. You’ll want left-cut, right-cut, and straight-cut snips to handle different angles. For straight, repetitive cuts through multiple studs, a cold-cut metal circular saw (like the Milwaukee M18 or equivalent) slices through steel studs cleanly without sparks or heat distortion. These are worth the investment on larger projects.
Nibblers are useful for intricate cuts, notches, and curves. Unlike snips or shears, a nibbler works like a high-speed round punch, removing small pieces of metal as it moves. It can change direction easily and handles corners and creases that would frustrate you with snips. A shear, by contrast, works like powered tin snips and is limited to flat surfaces and mostly straight lines.
Beyond cutting tools, you’ll need a screw gun or impact driver, self-tapping screws (called “TEK screws” or sharp-point framing screws), a magnetic level, a plumb bob or laser level, and clamp-style locking pliers (C-clamps designed for metal framing). The locking pliers hold studs in position while you drive screws, acting as your extra hand.
Laying Out and Assembling a Wall
Start by snapping chalk lines on the floor and ceiling to mark your wall location. Cut your top and bottom tracks to length and fasten them to the floor and ceiling. On concrete, use powder-actuated fasteners or concrete screws. On wood subfloors, standard screws work fine. Space fasteners about 24 inches apart along the track.
Cut your studs about 3/8″ shorter than the floor-to-ceiling measurement. This gap lets you tilt each stud into the tracks without forcing it, which matters because metal doesn’t compress the way wood does. Slide each stud into the bottom track, then tilt it into the top track and twist it into position so the open side of the C-channel faces the same direction on every stud.
Standard spacing is either 16 or 24 inches on center. For most non-load-bearing partition walls, 24-inch spacing works well and saves material and labor. Going from 16 to 24 inches on center eliminates roughly 30% of the screws you’ll need to install and later mud over when hanging drywall. For load-bearing walls, follow your engineer’s specifications, but industry capacity tables for sheathed shear walls are actually based on 24-inch spacing as the standard.
Secure each stud to the track with at least one self-tapping screw on each side (two per connection, top and bottom). Clamp the stud to the track first, then drive the screw. The screw should bite through both layers of steel and pull tight without stripping.
Cutting Techniques That Save Time
To cut a stud to length with snips, snip both flanges (the side lips of the C-channel) first, then bend the stud and cut across the web (the flat back). This is faster than trying to cut all three surfaces in one continuous line. For bulk cuts where every stud is the same length, a cold-cut circular saw on a miter stand is far more efficient. The blade produces minimal heat and no sparks, unlike an abrasive chop saw.
When you need to notch a stud for a pipe or conduit, score your cut lines, use a nibbler or reciprocating saw with a metal-cutting blade for the cuts, then clean the edges with a file or grinder. Steel burrs are sharp, so wear gloves throughout the process. Vacuum metal shavings as you go, since small steel slivers are painful to step on and can damage tools.
Framing Doors and Windows
Door and window openings in metal stud walls need extra reinforcement. Use a header track across the top of the opening, supported by jack studs on each side. For non-load-bearing walls, you can create a header by cutting a section of track and screwing it between the king studs at the right height, with short cripple studs running from the header to the top track.
If you’re hanging a heavy door, reinforce the king and jack studs by nesting two studs together (sliding one inside the other to form a box shape) or by inserting wood blocking inside the metal stud channel at hinge locations. This gives the hinge screws something solid to bite into. Without reinforcement, a heavy door will loosen its hinges over time.
Hanging Drywall on Metal Studs
Use fine-thread drywall screws for metal studs, not the coarse-thread screws meant for wood. Fine threads grab the thin steel without stripping. Set your screw gun’s clutch so the screw dimples the drywall paper slightly without breaking through it. Drive screws every 12 inches along each stud for walls, and every 8 inches on ceilings.
One common frustration: the stud can deflect (push away) as you drive the screw, especially with thinner gauges. Pressing firmly or having someone brace the other side helps. Starting the screw at a slight angle and then straightening it once it catches also works.
Mounting Heavy Objects
This is where metal studs get tricky. A standard wood screw into a light-gauge steel stud doesn’t hold much weight, and toggle bolts through drywall alone can crumble the gypsum under heavy loads. People regularly report drywall falling apart around toggle bolts when mounting things like monitor arms or heavy shelves.
The most reliable approach is installing wood blocking inside the wall during framing, before the drywall goes up. Screw a length of plywood or solid lumber horizontally between studs at the height where you’ll later mount a TV, cabinets, or grab bars. This gives you a solid wood surface behind the drywall to anchor into with standard lag screws.
If the wall is already closed up, you have a few options. You can mount a sheet of plywood to the wall surface, screwing through the drywall into the metal studs with self-tapping screws, then attach your brackets to the plywood. This spreads the load across a wide area. For lighter loads (under 50 pounds), heavy-duty toggle bolts like the SnapToggle style can work if driven through the metal stud itself rather than relying on drywall alone. Use a drill bit to make a clean hole through both the drywall and the steel, then install the toggle so its wings clamp against the steel.
Running Electrical and Plumbing
The pre-punched holes in metal studs are designed for running wires and small pipes. When pulling electrical cable through these holes, you need plastic grommets (snap-in bushings) to protect the wire insulation from the sharp steel edges. This isn’t optional. Bare metal edges will cut through wire sheathing over time.
For plumbing, copper and PEX lines pass through the knockouts easily, but the holes may need to be enlarged for larger drain pipes. Use a step drill bit or a knockout punch to widen holes cleanly. If a pipe is too large for the stud web, you’ll need to frame around it with a bulkhead or fur out the wall.
Common Mistakes to Avoid
- Using the wrong screws: Coarse-thread drywall screws won’t grip steel. Use fine-thread for drywall and self-drilling TEK screws for stud-to-track connections.
- Forgetting to plan for heavy mounts: Adding blocking after drywall is up is far harder than doing it during framing. Mark cabinet, TV, and shelf locations before you close the walls.
- Mixing up load-bearing and non-load-bearing gauges: A 25-gauge stud is meant for partition walls only. If your wall carries any structural load, you need a heavier gauge specified by an engineer.
- Ignoring thermal bridging: Metal conducts heat. On exterior walls, steel studs can create cold spots that lead to condensation. Continuous insulation on the exterior side of the framing solves this.
- Skipping grommets on electrical runs: Steel edges will eventually slice through wire insulation, creating a fire or shock hazard.