If your TV is leaning away from the wall, sliding sideways on its bracket, or hanging at a slight angle that's just enough to drive you mad — there's a small set of causes I see again and again. Here's how to diagnose and fix it.
Symptom 1: TV tilts forward (top edge away from wall)
The bracket is pulling away from the wall at the top. Three likely causes:
- Anchors slipping in plasterboard. The top fixings are carrying more leverage load than the bottom — if they're undersized anchors, they gradually pull. Fix: replace top fixings with heavy-duty toggle anchors (Geefix, Gripit) or move bracket to a stud.
- Wall isn't flat. If the wall bulges out below the bracket and is recessed above, the bracket sits at an angle. Fix: shim the top of the bracket with thin metal washers.
- Bracket not screwed in flat. If one fixing wasn't fully tightened or the wall surface is uneven (e.g. textured wallpaper), the bracket tilts. Fix: remove, check wall is flat, reinstall.
Symptom 2: TV tilts sideways
One side has dropped. Causes:
- Bracket wasn't level when fitted. Easy to confirm — put a spirit level on the bracket arms.
- One side's fixings are weaker than the other. Common when one side hits a stud and the other goes into plasterboard.
- TV VESA bolts uneven. If the bracket attaches to the TV via four bolts and one wasn't fully tightened, the TV tilts on the bracket.
Symptom 3: TV is sliding to one side
You have a fixed or tilt bracket where the TV can be nudged left or right along a rail. The locking bolts that hold the TV's position on the bracket have loosened. Most brackets have two small locking screws underneath the TV — tighten them.
Symptom 4: TV bracket arm is sagging (cantilever mounts)
Full-motion arms can develop sag at the wall mount after years of use. The wall plate is pulling forward at the top.
- Tighten the wall plate fixings.
- If anchors have failed, upgrade to heavy-duty plasterboard anchors or move to a stud/brick fixing.
- Check the arm's own tension bolt — many cantilever mounts have an adjustment screw to compensate for slight sag.
Diagnose first — do not just tighten
Tightening a screw that's already slipping in plasterboard just enlarges the hole and makes things worse. If a fixing turns and turns without resistance, it's gone. Pull the screw, redrill cleanly, install a proper anchor (Geefix or Gripit) and try again.
When the wall is the problem
Some walls just can't carry a TV safely:
- Dot-and-dab plasterboard on brick — the plasterboard isn't touching the brick except in spots. Anchors in the gap have nothing to grip. Use long fixings that go through plasterboard, through the air gap, and into the brick.
- Stud walls with metal studs — you need self-drilling toggle anchors made for metal studs.
- Chimney breasts — usually fine, but check for old flue voids.
What I do on a callout for a tilting TV
- Take a level reading on the bracket and TV separately.
- Test each fixing for movement.
- Inspect the wall type (stud finder, multi-detector).
- Replace whichever fixings are slipping with anchors rated for 2-3x the TV weight.
- Re-level and re-test.
Typical fix takes 45-90 minutes. Materials add £5-15. Worth it — a falling TV cracks the screen and can damage the wall it lands against.
TV looking suspect?
I diagnose and re-fix wall-mounted TVs across London — usually under 90 minutes. WhatsApp a photo and I will quote.
