7 Mistakes People Make When Mounting a TV (and How Pros Avoid Them)
Mounting a TV on the wall looks simple: drill some holes, hang a bracket, attach the screen. And for many homes, it goes exactly that smoothly. But SharpStage mounts TVs throughout the GTA and Hamilton every day, and the same seven mistakes come up over and over — sometimes as a quick fix, sometimes as a costly redo. Here's what they are and how to avoid every one.
Mistake #1: Mounting the TV Too High
This is the most common mistake by a wide margin. The instinct is to push the TV high on the wall — centred at eye level while standing, or close to the ceiling because it feels more cinematic. But when you're actually watching TV, you're sitting down. A TV mounted too high forces your neck upward for hours and causes fatigue that sneaks up on you after a few weeks of use.
The right target: the centre of the screen should sit at roughly seated eye level — around 42 to 48 inches from the floor for most adults on a standard sofa. If you're unsure, cut a piece of cardboard to your TV's dimensions, tape it to the wall at different heights, then sit down and test it before you drill. Our full guide on ideal TV mounting height covers this in detail.
Mistake #2: Not Verifying the Stud Location
Standard consumer stud finders are useful — but they can and do misread. Mounting on a false positive means your bracket is anchored into bare drywall, which won't hold a large TV safely over time.
After the stud finder marks a location, always verify with a small finish nail or a rare-earth magnet. Nails driven into actual studs hit solid resistance; magnets catch on the drywall screws that were driven into the stud during construction. In GTA and Hamilton condos, there's an added complexity: walls almost always have metal studs rather than wood, and most consumer stud finders aren't calibrated for them. Our guide on drywall mounting and metal studs explains the full picture for condo owners.
Mistake #3: Using the Wrong Anchors for the Wall Type
Not every wall is the same, and not every anchor is right for every surface. Plastic self-drilling anchors are fine for picture frames — they're not designed for the sustained weight and movement of a mounted TV. Using them is one of the most common causes of TVs falling off walls.
For no-stud installs in standard drywall, quality metal snap toggles are the correct choice. For concrete or brick walls — common in older Toronto homes and condo buildings — masonry anchors and a hammer drill are essential. For plaster and lath walls (common in Hamilton and older GTA neighbourhoods), the approach is different again. See our guide on mounting on plaster and lath for why these walls need special handling.
Mistake #4: Ignoring the VESA Pattern Before Buying a Mount
VESA is the standardized grid of four bolt holes on the back of your TV, measured in millimetres — for example, 400×200 or 600×400. Every mount is rated for specific VESA sizes. Buy a mount without checking your TV's VESA pattern first, and the bolt holes may simply not line up with the bracket.
This is a five-minute check that saves a frustrating return trip. Look up your TV model number online or check the manual — the VESA measurement is always listed. The mount packaging lists compatible VESA ranges. Confirm they match before purchasing anything.
Mistake #5: Running Power Cables Inside the Wall the Wrong Way
After mounting a TV, the desire to hide power and HDMI cables by routing them inside the drywall is completely understandable — it looks dramatically cleaner. But running a standard power extension cord through a wall cavity violates the Ontario Electrical Safety Code. These cords aren't rated for in-wall use and create a fire hazard.
The two correct options: an in-wall cable management kit that uses an approved in-wall power extender (routing electricity safely through a recessed outlet), or a clean external raceway that keeps cables against the wall surface in a low-profile channel. Both look great. SharpStage offers both — text us and we'll recommend the right approach for your wall type and building. You can also learn more on our cable concealment service page.
Mistake #6: Skipping the Level Check
A TV that's a degree or two off-level looks tilted every time you walk into the room — and it bothers you far more once it's up and permanent than it did during installation. Mount bolt holes typically have a small amount of play, and an unlevel surface can introduce a tilt you won't notice until the TV is on and the picture gives it away.
Always use a spirit level across the bracket before fully tightening any bolts. A digital level app on your phone works too, if you trust it's calibrated. Either way, the check takes thirty extra seconds and prevents a frustrating redo.
Mistake #7: Choosing the Wrong Mount Type for the Room
Fixed, tilt, and full-motion mounts each solve different problems — and using the wrong type for the room is a mistake that's immediately obvious once everything is installed.
- Fixed mount: sleek and low-profile, ideal for a TV viewed straight-on from one fixed seating position.
- Tilt mount: angles the screen downward — the right choice for TVs mounted above comfortable eye level, including above a fireplace.
- Full-motion mount: extends and swivels for open-concept rooms, corner placements, or any space with multiple seating areas.
A full-motion mount in a room where the arm will never be used is unnecessary and costs more. A fixed mount in a corner where the screen needs to angle toward the sofa doesn't work at all. Our comparison of fixed vs tilt vs full-motion mounts helps you match the mount type to your specific room layout.
When to Let a Pro Handle It
Most of these mistakes are easy to avoid with the right prep and the right information. But the ones that cause real damage — wrong anchors in plaster, incorrect stud identification, cables inside the wall unsafely — are also the hardest to undo cleanly. If you'd rather know the job is done right the first time, SharpStage TV Mounting is available throughout the GTA and Hamilton 8 AM–8 PM, 7 days a week. Same-day service is available at no extra charge, and you pay only after the job is done and you're fully satisfied. Trusted by 225+ five-star customers across the region.
Text or call 437-599-5020 for a fast, honest quote. Not sure which mistake you're up against? Describe what you're working with and we'll tell you exactly what the right approach looks like before you book.
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