Hide TV Wires Without Cutting the Wall

Part of our complete guide: How to Mount a TV on Any Wall.

Almost everything written about hiding TV cables assumes you can open the wall. Plenty of walls in Lexington cannot be opened, and the people asking are usually the ones with the least room to argue about it: renters, condo owners, and anyone whose living room wall is solid block.

That is not a dead end. It changes the method, not the result. Here is what actually happens on a wall that has to stay closed.

1. Two Cables, Two Different Rule Books

Behind a mounted TV there are only two kinds of cable, and almost all of the confusion comes from treating them as one thing.

The signal side — HDMI, an Ethernet lead, a coax drop — is low-voltage. Electrically it is a quiet cable, and the rules about where it may run are far more relaxed. The power side is mains, and it is governed by electrical code with no flexibility at all.

That split matters here because it means a closed wall is not equally closed to both. On a great many jobs the signal cables can be tidied away almost invisibly while the power lead is the one thing still showing, which is a much smaller problem than the one people think they have.

2. Why the Wall Cannot Be Opened

Worth naming, because the reason changes the answer:

• A lease. Most Lexington rental agreements will accept the mount holes and nothing beyond them. Our guide to mounting in apartments and rentals covers what is usually allowed.
• Solid masonry. A brick or concrete block wall has no cavity to run anything through. There is nothing to open.
• Plaster and lath. It can be cut, but it cracks away from the cut in ways drywall does not, and plenty of owners decide it is not worth it in an older Lexington home.
• A shared or fire-rated wall. Townhouse and condo demising walls are built to stop fire and sound travelling, and cutting into one defeats the thing it was built for.
• A cavity that is full. Firestopping, insulation, ducting or a run of plumbing can leave no clear path even in ordinary drywall.

If you are not sure which of those you have, what is behind the wall walks through telling them apart before anybody drills anything.

3. What a Surface Raceway Actually Is

A raceway is a shallow channel that sits on the face of the wall and carries the cables down from the television to the outlet. It takes the power lead and the signal cables together, it has corner pieces and an end cap so the run finishes properly, and it is made to be painted.

That last part is what separates a raceway that disappears from one that reads as a plastic strip stuck to the wall. Painted in the wall colour, run dead straight and finished at both ends, it reads as trim. Done badly — crooked, unpainted, taped on — it looks worse than the loose cables did.

We fit them regularly, and a raceway is priced once we have seen the wall. The run length, the wall surface, the number of cables and where the outlet sits all change the work, so the figure comes after the look rather than before it. Tell us about it when you book and we will have what it needs on the van.

4. Getting the Run Right

The layout decides whether anyone notices it, and there are four things worth saying before the day:

• Straight down, not diagonal. The eye forgives a vertical line far more readily than an angled one. The run should drop from directly behind the screen to the outlet below it, even if that means repositioning the TV a few inches.
• Behind the furniture where possible. A console or a credenza swallows the bottom third of the run, and that is the part nearest eye level when you are sitting down.
• Leave slack at the top. If the mount tilts or extends, the cables have to move with it. Our note on how close a TV really sits to the wall covers why the arm needs that room.
• Keep the count down. Every device you can move out from behind the set is one less cable in the channel. Where to put the cable box is most of that conversation.

5. The Shortcuts That Are Not Shortcuts

Three things come up constantly, and all three cost more than they save.

The first is pushing an ordinary extension cord or power strip lead into the wall cavity and bringing it out lower down. It looks like the same result as a professional chase and it is a code violation, for a reason that has nothing to do with paperwork: those cords are built to be visible, movable and inspectable. A cord nicked by a drywall screw or pinched behind a plate has nobody to notice it. The in-wall rated kit we use in a real chase exists precisely to close that gap.

The second is adhesive cord cover. On smooth, well-painted drywall it can hold. On the textured or flat-painted walls common around here it lifts within a season, usually taking a stripe of paint with it, and the repair costs more than fitting it properly would have.

The third is bundling everything tight against the back of the set with a zip tie. It is neat for an afternoon and it traps heat exactly where the electronics are; heat and airflow behind a mounted TV covers why that matters.

One more worth clearing up, because the name misleads people: a powerline adapter is a networking product that carries internet over the house wiring. It is a good answer to a weak signal and it hides nothing. If that is your actual problem, Wi-Fi that will not reach the TV is the right page.

6. If the Wall Can Be Cut After All

Sometimes the answer changes once somebody has looked. If the wall is ordinary drywall with a clear cavity and it is yours to cut, in-wall concealment is $99 and it is the finished version of this job: a plate behind the television, a plate near the floor, the signal cables on low-voltage brackets, and the existing outlet extended up into the chase on a UL-listed in-wall rated cord kit. No new circuit and no second trade.

Our guides to hiding TV wires in the wall and what to do when there is no outlet behind the TV cover that route in full. Plenty of jobs end up as one wall done properly and a raceway on the one that cannot be.

7. What to Tell Us When You Book

• Whether you own the place, and anything the lease or HOA says about the wall.
• What the wall is made of — drywall, block, brick, plaster — or a photo if you are not certain.
• Where the nearest outlet is relative to where the screen will sit.
• What else lives behind the TV, since the device count sets the cable count.

Installation is $129 on sets up to 55 inches, with the mount priced separately — flat $35, tilting $45, full-motion $125 on a 32 to 55 inch set — or bring your own that fits. Service is free within 20 miles of Lexington, and Richmond is our home base so it is free there too.