In this article
Half-inch drywall is gypsum between two sheets of paper. It holds a picture frame. It does not hold a TV — the studs behind it do. Every good drywall install is really a stud install.
Step 1: find the studs, then prove them
- A deep-scan stud finder marks the edges; the center is between them.
- Studs sit 16 inches apart in most homes (24 in some newer builds and garages).
- Prove it: tap a finish nail through the drywall at the center mark. It should hit solid wood a half-inch in. Miss? Move a quarter-inch and try again; the hole disappears under the mount.
Watch for wires and pipes: outlets and switches usually have a cable running vertically from them, so stay a few inches to the side.
Step 2: match the mount to the studs
| Situation | Solution |
|---|---|
| Two studs where you want the TV | Standard: lag the plate into both |
| Studs off-center | Mount with a sliding plate — the TV shifts, the bolts stay in the studs |
| Only one stud in range | Painted wood backer across two studs, TV on the backer |
| No studs possible, small TV | Rated drywall anchors — when that's actually safe |
Step 3: bolts and depth
- 5/16-inch lag bolts, at least 2.5 inches into the wood: for 1/2-inch drywall, 3-inch bolts.
- 3/16-inch pilot holes — without them, the stud can split.
- Tighten with a socket wrench until snug; stop before the washer crushes the drywall paper.
- Two bolts per stud minimum; four total for the plate.
Lag bolts vs toggles explained: toggle bolts vs lag bolts.
Step 4: level, hang, lock
Level the plate before the last bolt is tight. Hang the TV (two people above 50 inches), lock the safety screws, re-check level. Full walkthrough: how to mount a TV.
What drywall can't do
- Hold a full-motion arm without studs — the lever pulls anchors straight out.
- Hold anything with plastic expansion anchors from the mount box.
- Hold a TV on one stud plus "a good anchor" on the other side — the anchor side fails first.
Metal studs look like drywall-on-wood until a magnet sticks to the screws. Different hardware entirely: mounting on metal studs.
Rather have a pro do it?
Exact price in about a minute — TV size, wall type and cables included. Same-day in most areas, 3-year warranty on every install.
Drywall on wood studs is our most common install: $119 up to 60 inches, $129 up to 85. Planning your own? The DIY wizard builds the checklist.
Gear mentioned in this article
Franklin Sensors ProSensor M210 13-Sensor Stud Finder, Live Wire DetectionStud finder: locates the framing behind the drywall.Check price →
Swanson 9” Die Cast Aluminum Torpedo Level with Rare Earth Magnetics TL002MLevel: gets the bracket straight on the first try.Check price →
Prime-Line 9056277 Hex Lag ScrewsLag bolts for wood studs.Check price →
Mounting Dream Fixed TV Wall Mount Low Profile TV Bracket for 42-90 Inch TVFixed bracket: the panel sits flat, closest to the wall.Check price →
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