You’ve seen it. A beautiful TV on the wall, and a fistful of black spaghetti hanging down to the outlet below it. All that work, undone by six cables.
Wire concealment is the part of a TV install that separates “mounted a TV” from “finished the job.” The good news is that most of it isn’t hard — it just has to be done in the right order, with cable that’s actually rated for where you’re putting it. Here’s how we do it, and how you can do it yourself.
Key takeaways
- A TV’s factory power cord can’t legally go inside your wall. Moulded cords aren’t rated for in-wall use. Use a UL/cUL-listed recessed in-wall power kit instead.
- Low-voltage cable inside a wall needs an in-wall rating — CL2 or CL3 for most homes, CMR between floors, CMP (plenum) if the space handles building air.
- Poured concrete and masonry have no cavity at all. Surface raceway isn’t a compromise there — it’s the correct answer, not a workaround.
- Keep signal cable away from AC power. Run them apart where you can, and cross at 90° where you can’t.
- Passive HDMI gets unreliable on long runs. Past roughly 25 ft at 4K, switch to active optical HDMI.
- Drywall wall
- Has a stud cavity. Cable runs inside it, behind two low-voltage plates.
- Concrete or block
- No cavity to speak of. Surface raceway, painted to match.
- Brick
- Same fix as concrete, unless it's veneer over a framed wall — worth confirming first.
- TV needs power at the wall
- A recessed in-wall power kit. Never the factory cord.
- Renting, or don't own the wall
- Paintable raceway. No permit, and it comes off cleanly.
- HDMI run past 25 ft
- Switch to active optical — passive copper starts dropping out.
How Do You Hide TV Wires Without Cutting Into the Wall?
There are exactly two ways to make TV cable disappear: run it through the wall, or run it along the wall inside something that reads as intentional. Everything else on this page is a variation of one of those two.
In-wall routing gives you the cleanest possible result — nothing between the screen and the console but a blank wall. It needs a stud cavity to work with, cable that carries the right rating, and a plan for how the TV actually gets power. Surface raceway skips all three requirements. It goes on top of whatever's already there, takes about an hour, and comes off cleanly if you ever move. Neither one is the "proper" method with the other as a shortcut — they're the correct answer for different walls, which is exactly the work behind our invisible wire concealment service.
What Cable Rating Do You Need for an In-Wall Run?
This is the part that gets skipped, and it's the part that actually matters. Cable jackets carry a rating printed along their length that tells you which spaces they're legally allowed to occupy.
| Rating | Where it’s used | Typical job |
|---|---|---|
| CL2 / CL3 | General in-wall low-voltage runs inside a residence | HDMI, speaker wire, network cable behind drywall |
| CMR (riser) | Vertical runs passing between floors | Basement-to-upstairs cable runs |
| CMP (plenum) | Spaces that handle building air, such as an open return above a drop ceiling | Commercial and some condo installs |
| Unrated (standard patch cable) | Surface use only — never inside a wall or ceiling | Device to wall plate, outside the finished surface |
If a cable's jacket doesn't show a rating, treat it as unrated and keep it on the surface. Manufacturers print the rating every few feet specifically so it can still be checked once the wall is closed up.
Cable rating answers "can this go in the wall." It doesn't answer "will the picture stay stable" on a long run — passive copper HDMI starts losing integrity somewhere around 25 ft at 4K, and the failure shows up as sparkle, dropouts, or a picture that won't come up at all. Past that distance, switch to an active optical HDMI cable rated for the bandwidth your TV needs, and mind the direction: optical cables have a source end and a display end marked on the connector.
Why Can’t the TV’s Power Cord Go Inside the Wall?
Cable rating settles the question for almost everything else in this list. The TV's own power cord is the one exception, and it doesn't matter how well the rest of the job is done if this part is wrong.
The one rule people break
A TV's factory power cord is a moulded, flexible cord — not fixed wiring — and it isn't rated to run inside a wall cavity. Hiding it there anyway isn't a shortcut, it's non-compliant work, regardless of how tidy the wall looks once it's closed up. In Ontario, this falls under the Canadian Electrical Code as adopted by the Ontario Electrical Safety Code and enforced by the Electrical Safety Authority.
The fix is a listed recessed in-wall power kit. It puts a proper receptacle behind the TV and a second one back at the original outlet, joined by cable that is rated for in-wall use. The TV then plugs into what is, electrically, just a normal outlet that happens to sit behind the screen. It's inexpensive to add at install time and awkward to retrofit later, so decide before the TV goes up — particularly on a Frame TV or any set where the flush-to-wall look is the point.
How Do You Hide TV Wires on Concrete, Brick or a Condo Wall?
A lot of the calls we get from downtown Toronto condos start with some version of "the wall won't take a drill bit the way I expected." Poured concrete and concrete block don't have a stud cavity — there's nothing behind the surface to fish a cable through, and chasing a channel into structural concrete is a job for a demolition contractor, not a Saturday afternoon.
The honest answer on concrete and block is a paintable surface raceway. It fixes to the wall with adhesive or masonry screws, takes the same paint as the wall around it, and reads as a trim detail rather than cable management once it's finished. It's what we use on most condo installs across the GTA, and it isn't a downgrade from in-wall routing — on this wall type, it's the correct method, not a workaround.
Brick works the same way — raceway painted to match the brick or the surrounding trim disappears just as well. The one exception is brick veneer over a framed wall, which sometimes has a real cavity behind it. That's worth confirming with a stud finder or a small test hole before assuming either way.
How Do You Run Wires Inside a Drywall Wall, Step by Step?
On drywall over wood studs, this is a genuinely doable weekend project. Sort out three things before the drill comes out: where the studs actually are (16” on centre is typical, not guaranteed), whether there's fire blocking between them that will stop a fish tape halfway down, and what else shares that cavity — electrical, plumbing and ducting all use the same space. A stud finder with AC detection covers the second and third checks in the same pass.
- Cut the two openings. One behind the TV, one near the existing outlet, both in the same stud cavity. Confirm the cavity's clear before you cut the second one.
- Fit old-work low-voltage brackets. These mud rings clamp to the drywall and give the wall plate something to screw into — no stud required.
- Drop a fish tape or glow rod from the top opening down. If it stops short, that's fire blocking, and the route needs to change.
- Tape the cable on and pull it through steadily. A smoothly taped joint won't catch on the way through; yanking will.
- Fit the plates and leave a service loop at both ends. Brush-style plates let cable pass through and still look finished. The loop means a future swap doesn't mean a new pull.
- Test every input at the resolution you'll actually use, before the TV goes on the wall. A bad cable is a five-minute fix now and a full teardown later.
Measure the actual path, not the straight-line distance, and add slack at both ends — cable is inexpensive; a run that's two inches short is not. Where a cavity isn't available and the wall can't be opened, the gap behind a removed baseboard is often enough to carry a low-voltage run along the floor instead. It's slower than a straight drop but leaves the wall intact, which matters more if it's a rental you don't own.
What Cable Management Accessories Work Without Opening the Wall?
Not every job needs the wall opened, even on drywall. Three accessories cover most of what a finished-looking result actually needs.
Paintable raceway is the most useful item on this list on any wall type, not only concrete — a rigid channel that sticks or screws on and takes paint, so it reads as trim rather than cable management. Cable sleeves gather several loose cables travelling together, usually behind a media unit, into one tidy trunk instead of a nest. Cable clips or hook-and-loop straps fix a cable to follow an edge — a baseboard, a desk leg — instead of hanging free. Skip zip ties where you can; straps are reusable and won't crush a cable's jacket if you overtighten them.
Don’t over-tighten
Every cable has a minimum bend radius, and HDMI is the fussiest about it. Cinching a bundle hard with a zip tie, or forcing a tight loop behind the TV, can deform the conductor and cost you signal. Snug, not strangled — and keep signal cable away from AC power where the route allows it, crossing at 90° rather than letting the two run together.
How Much Does It Cost to Hide TV Wires?
There isn't one number, because it isn't one job. A raceway on drywall is materials and about an hour of labour. An in-wall run adds two cut-and-patch openings and the low-voltage hardware. A recessed power kit for a Frame TV, or any set that needs power behind the screen, moves the price again. Wall type changes it too — fixing a raceway to concrete or brick takes longer than drywall, and steel studs need different fasteners than wood.
Most installers quote wire concealment as a line item separate from mounting the TV itself, so it's worth asking specifically whether a quote includes it, and which method it assumes. Our guide to TV wall mounting cost factors covers the mounting side in more detail if you're pricing the whole job.
Should You Hide the Wires Yourself or Call a Pro?
Do it yourself when you're on drywall over wood studs, the run is a straight drop with no fire blocking in the way, and you're comfortable cutting two openings and patching them if the route changes. A surface raceway is even more forgiving — a genuinely doable afternoon on almost any wall.
Call someone when you're into concrete, brick, plaster and lath or steel studs, when a fireplace wall or anything above a mantel is involved, or when the TV needs power run behind it. Those are the jobs where getting it wrong means redoing drywall, not just re-pulling a cable.
GTA TV Wall Mounting handles both in-wall concealment and surface raceway across Toronto and the surrounding GTA service areas, including fitting a recessed power kit where the TV needs one. We carry $2,000,000 commercial liability insurance, we're up to 50% less than comparable big-box store installation services, and every job comes with a one year material and workmanship warranty. Tell us your wall type and we'll come back with a straight price on the concealment work alone, or as part of the mount.
Frequently Asked Questions
Can TV wires be hidden inside the wall?
Yes, provided you use cable that carries an in-wall rating. CL2 or CL3 covers most low-voltage runs in a home, CMR for vertical runs between floors, and CMP where the space handles building air.
The one thing that can't go in the wall is the TV's own power cord. For that you need a listed recessed in-wall power kit, which puts a proper receptacle behind the screen.
Can you hide TV wires on concrete?
Not inside it, in most cases — a poured concrete or concrete-block wall has no cavity to run cable through, and chasing a channel into it is major work.
The standard answer is paintable surface raceway. It fixes to the concrete, takes the same paint as the wall and reads as trim once it's finished. It's what we use on most condo installs across the GTA.
Can you hide TV wires on brick?
Same approach as concrete: run the cable in a surface raceway rather than trying to open the wall. Painted to match the brick or the trim, it disappears.
If the brick is a veneer over a framed wall there may be a cavity behind it, but that's worth confirming before anyone starts drilling.
Do TV installers hide wires?
Most do, and it's usually quoted as a separate line rather than being included by default. Ask specifically whether the price covers in-wall concealment, a surface raceway, or neither.
We handle both, including fitting a recessed power kit where the TV needs power behind the screen.
Where should the Samsung One Connect Box go?
Somewhere ventilated and reachable — inside a media unit, on a shelf below the screen, or in an adjacent cabinet. It needs airflow and you'll want access to its inputs.
The single cable from the box to the panel is what makes a Frame TV look clean, so plan the box's home before mounting rather than after. See our Frame TV installation page for how we handle it.
How do you hide the Samsung One Connect Box and its cable?
The One Connect cable is thin and can be run in-wall to a low-voltage plate behind the screen, with the box itself concealed in a cabinet or a recessed enclosure below.
Because it's a proprietary cable, plan the route and length before you pull anything — replacing a run that's two inches short means opening the wall again.
Do I need a recessed box for a Frame TV?
For the cleanest result, yes. A recessed outlet box lets the power lead and the One Connect cable bend inside the wall cavity instead of behind the panel, which is what stops the screen standing proud of the wall.
It's inexpensive at install time and awkward to add afterwards, so decide before the TV goes up. We fit them as part of our Frame TV installation work.
Does the Samsung Frame TV sit flush against the wall?
It's designed to, using the slim no-gap wall mount supplied with or sold for the set rather than a standard bracket.
Getting it truly flush also depends on what's behind it — a recessed outlet box stops the plug pushing the panel off the wall, which is the usual reason a Frame ends up sitting proud.
What cable rating do I need for an in-wall HDMI or speaker run?
CL2 or CL3 covers most in-wall low-voltage runs in a home. Use CMR for vertical runs between floors, and CMP (plenum) where the space handles building air — common in commercial jobs and some condos. The rating is printed along the jacket; if it isn't there, the cable doesn't belong in a wall.
Why does my picture drop out on a long HDMI run?
Passive copper HDMI loses signal integrity as the run gets longer, and 4K makes it worse because there's more data to carry. Around 25 ft is where passive cable typically starts to get unreliable.
Switch to an active optical HDMI cable rated for the bandwidth you need, and check it's installed the right way round — optical cables are directional, with a source end and a display end.
Should I hire someone or hide the wires myself?
A surface raceway on drywall is a genuinely doable afternoon. Where it's worth calling someone is concrete and brick, plaster and lath, a fireplace wall, anything above a mantel, or a run that needs new power behind the TV.
That's the work we do every day across the GTA, and we carry a one year material and workmanship warranty on it.