Mounting a TV

A magnetic stud finder is the cheapest and most reliable tool for this. It is a small puck with a magnet inside, usually under ten dollars. Slide it slowly across the wall and it will grab onto a drywall screw. Those screws go into the center of the wood framing, so wherever it sticks, you have found the middle of a stud.

Once you find one, measure sideways. Most houses space studs 16 inches apart, center to center. Some use 24 inches. Measure 16 inches over and hunt for the next screw. If you find screws in a straight vertical line 16 inches from the first, you have two solid spots and you can stop looking.

Electronic finders work too. The better ones, like the Franklin ProSensor, light up the full width of the stud instead of beeping once. They do get confused by heavy wall texture, wallpaper, or a second layer of drywall over the first.

Before you trust your pencil marks, tap a thin finish nail into the wall up high, where the mount plate will hide the hole. Firm resistance about half an inch in means wood. If the nail slides in easy, you missed, so move over an inch and try again.

One local note. Many St. Petersburg homes are concrete block. In those houses the outside walls often have no real studs at all, just thin wood furring strips laid over the block. A magnetic finder will find the nails in those strips, but the strips by themselves hold almost nothing. If your marks feel thin or the wall is an exterior wall, treat it as a block wall and use masonry anchors instead.

This comes up constantly in Pinellas County, because so many homes here are concrete block with a thin coat of drywall or plaster over it. Most how-to videos online assume wood framing, so they steer people wrong.

You need three things.

First, a hammer drill. A regular cordless drill will not cut block, and you will wear it out trying. You can rent one for around 20 dollars for the day, or buy a corded one for about 70.

Second, the right bit. A quarter-inch Tapcon uses a three-sixteenths inch carbide masonry bit. That pairing matters. A hole even slightly too big and the screw will not bite. If you would rather use sleeve anchors, the bit size matches the anchor body, so a three-eighths inch sleeve anchor takes a three-eighths inch hole.

Third, the right depth. Sink the screw at least 1 inch into the block, and not more than about 1 and 3 quarter inches. Drill the hole half an inch deeper than the screw will reach, then blow the dust out with a drinking straw or vacuum it out. Leftover dust at the bottom of the hole is the most common reason a screw will not go all the way in.

Two things people worry about more than they need to, and one they should. Block has solid ribs inside, called webs, with hollow chambers between them. You do not have to find a web. A quarter-inch Tapcon with 1 inch of thread in the front face of hollow block is rated for hundreds of pounds, which is plenty for a TV. Hitting a web is a small bonus, not a requirement. What you do need to avoid is the mortar joints between the blocks. Stay about an inch away from them, because mortar is soft and crumbles under a screw.

One last thing that trips people up. If your wall is drywall over furring strips over block, the screw has to pass through the drywall, cross the air gap behind it, and still get its full 1 inch into the block. That means a longer screw than you think, usually 2 and a quarter inches or so. Measure before you buy.

If you are not sure what is behind your wall, I am glad to take a look before you start drilling. Call or text me at 727-421-2344.

The most common mounting mistake by far is putting the TV too high. People hang it at standing eye level, then spend the next several years watching with their chin up.

Here is the simple way to get it right. Sit on your couch the way you actually sit. Have someone measure from the floor up to the center of your eyes. On most sofas that lands between 40 and 44 inches. Wherever it lands for you, that is where the center of the screen belongs.

Now a little math. Take the TV's screen height, not the diagonal size on the box, and cut it in half. A 55-inch TV is about 27 inches tall, so half is 13 and a half. A 65-inch is about 32 inches tall, so half is 16. Subtract that from your eye height and you have the height for the bottom edge of the screen. With 42-inch eye level and a 65-inch TV, the bottom of the screen sits at 26 inches off the floor.

Mark that line on the wall with painter's tape and live with it for an hour before you commit. Better yet, cut a piece of cardboard the size of the TV and tape it up. It takes five minutes and it prevents the expensive kind of regret, which is four holes in the wrong place.

One exception. If the room does double duty and people stand behind the couch at a counter, split the difference and use a tilting mount rather than raising the whole thing. A tilt lets you aim the screen down at the seated viewers while still being watchable from standing.

Over the fireplace is the most requested TV spot and the one people most often regret. There are two reasons.

The first is your neck. A mantel is typically 48 to 54 inches off the floor, so the screen center ends up near 65 or 70 inches. That is about 25 inches above where your eyes sit on the couch, and it tips your head back for the whole movie. Most people start noticing the ache within a week.

The second is heat. Air above a working firebox gets hot, and a TV pulls that warm air in through the vents on its back and top. Electronics do not fail dramatically from this, they just wear out early. Gas inserts are worse than people expect, because they run for hours at a steady temperature rather than dying down like a wood fire.

If you still want the TV there, do three things.

First, use a pull-down articulating mount, often sold as a mantel mount. It swings the screen down and out toward you for viewing, 20 inches or more, and folds back up flat when you are done. Expect to pay 250 to 500 dollars for a decent one. They also need solid anchors, because a screen hanging out on an arm pulls much harder on the top fasteners than a flat mount does.

Second, before you buy anything, run the fireplace for an hour and set a cheap thermometer on the mantel. That tells you what you are actually dealing with instead of guessing.

Third, find out what is behind the face above the firebox. Many are a hollow box with stone or tile on the front, and there may be nothing solid in there to fasten into.

If you want a second opinion on your specific wall before you spend money on a mount, call or text 727-421-2344.

Drywall by itself is gypsum and paper and has almost no grip. But a steel toggle spreads the load across the back side of the panel, and that changes everything.

A quarter-inch SNAPTOGGLE in half-inch drywall is rated at 265 pounds before it fails. The accepted rule is to use a quarter of that as a safe working load, so figure about 65 pounds per anchor. Four of them give you roughly 260 pounds of working capacity, which is plenty for a 70-pound TV on a fixed mount.

The rules are simple. Use metal toggles, not the plastic expansion cones in the mount's hardware bag and not the little plastic screw-in cones from the hardware store. Drill the exact hole size printed on the package, usually half an inch. Make sure the wings actually flip open behind the panel before you tighten, then snap the plastic collar off flush with the wall. Do not overtighten. If you crush the drywall around the hole, the anchor is loose and you have to move over and start a new one.

Toggles are fine for fixed and tilting mounts. For a full-motion arm that swings the TV out 20 inches, do not use them. When the arm is extended, the weight tries to pull the top fasteners straight out of the wall, and that is exactly the direction drywall is weakest. Swing-arm mounts belong in studs or solid block.

The cleanest fix when the studs are in the wrong place is a ledger board. Take a piece of one-by-six lumber or three-quarter-inch plywood, paint it your wall color, and lag-screw it into two studs. Now you can bolt the mount anywhere along that board. It is stronger than any anchor, it looks intentional, and it comes back off cleanly when you move.

Match the mount to the room, not to the price tag.

A fixed mount, sometimes called low profile, holds the TV flat about half an inch to an inch and a half off the wall. It looks the best, it costs the least, and it is the right pick when the TV sits at proper seated eye level and you always watch from the same couch. The one drawback is that reaching the connections behind the TV becomes a chore, so plug in everything you need before you hang it.

A tilting mount adds 5 to 15 degrees of downward angle. Get one if the TV has to sit higher than eye level, or if you get glare from a window or a lanai slider behind your seat. The afternoon sun here is strong, and a few degrees of tilt can clear a reflection completely.

A full-motion mount, also sold as articulating or cantilever, rides on an arm that extends and swivels. This is the answer for an open kitchen and living room where you watch from the sink and from the sofa, or for a corner. It costs more, usually 80 to 200 dollars, sits three to five inches off the wall when folded in, and it has to be bolted into studs or solid block rather than drywall anchors.

Whatever you choose, check two numbers on the box. The first is the weight rating, and you want real headroom over your TV's actual weight, not just barely enough. The second is the VESA pattern. That is the spacing of the four bolt holes on the back of the TV, measured in millimeters, such as 400 by 400. It is printed in your TV's manual, and if the mount does not list your pattern, it will not bolt on.

Think of it as a chain with four links: the TV, the mount, the fasteners, and the wall. The chain breaks at the weakest link, and it is almost never the mount.

Flat screens have gotten light. A 55-inch runs about 30 to 40 pounds, a 65-inch about 40 to 60, a 75-inch about 60 to 90. Nearly any name-brand mount is rated well past that. So when a TV comes off a wall, the failure is at the fasteners.

Into wood framing, use the lag bolts that came with the mount, usually five-sixteenths inch by two and a half inches, and drive them into the center of the stud. Drill a pilot hole first, roughly two-thirds the diameter of the bolt, so the wood does not split. Two of those in solid wood are good for many hundreds of pounds of downward load.

Into concrete block, quarter-inch masonry screws with 1 inch of thread in the block will do the same job.

There is a second idea worth understanding, because it explains a lot. Weight pulling straight down is called shear, and fasteners are very good at that. But a full-motion arm held out away from the wall also pulls the top bolts straight out of the wall, which is called tension, and that is much harder on a fastener. That is why a swinging mount needs studs or block while a fixed mount can sometimes live on metal toggles.

Give yourself margin. Pick a mount rated at least double your TV's weight. Use all four fastener holes, not two. And when everything is hung, grab the bottom of the TV and pull gently toward you. It should not move at all.

You have three levels of tidy, and they are very different amounts of work.

Level one is a surface raceway. It is a plastic channel that sticks or screws to the wall, holds the cords inside, and takes paint. Legrand Wiremold CordMate and CordMate II are the common ones, around 15 to 25 dollars for a kit with corner pieces. Caulk the seam along the edges, prime it, and roll your wall color over it and it nearly disappears. This breaks no rules and comes back off cleanly.

Level two is passing only the signal cables through the wall. You cut an opening behind the TV and another behind the media cabinet, install brush-style wall plates, and fish the HDMI and network cables between them. Signal cables are allowed inside a wall, but the cable needs to carry a CL2 or CL3 marking on the jacket, which means it is rated for in-wall use. Ordinary HDMI cable from a big-box shelf often is not, so check. This is straightforward work with a drywall saw and a fish tape, though on a concrete block wall there is usually nowhere to fish a cable at all.

Level three is where people get into trouble. Do not push the TV's power cord into the wall and out a hole below. A cord with a molded plug on the end is not permitted to be concealed inside a wall, because it is not rated for it and it becomes a fire risk that nobody can see. It will also come up when you sell the house and an inspector looks behind the TV.

The correct fix is a recessed outlet in the wall behind the TV. Adding or moving an outlet is electrical work, and in Florida that means a licensed electrician. Get a quote from one. It is usually not expensive, and it is the version that is actually right.

Tile mounting comes up a lot around here, on fireplace surrounds, accent walls, and the tiled walls in older Florida houses and Florida rooms. Tile itself is brittle, but the crack almost always comes from one of two things: hammer drilling before you are through the hard glaze, or the bit skating sideways across the surface and chipping it.

Here is the order of operations.

Mark your spot, then put two strips of masking tape over it and mark again on the tape. The tape gives the bit something to grab.

Start with a diamond core bit or a spear-point carbide tile bit in a regular drill, with hammer mode off. Run it slow, around 300 to 600 rpm, with light steady pressure and no leaning on it. Keep it cool with a wet sponge or a squirt bottle. Heat is what ruins these bits and what stresses the tile.

If you can place the hole in a grout line instead of the middle of a tile, do it. Grout drills easily and patches invisibly later. Just remember the grout is not what holds the screw. The screw still has to reach the block or wood behind it and get full depth there.

Once you feel the bit break through into whatever is behind the tile, stop and change bits. If it is concrete block, switch to a masonry bit and turn hammer mode on. If it is wood framing, switch to a wood bit.

When you fasten, put a wide fender washer under the bolt head so the pressure spreads out instead of pressing on one spot of the tile face, and stop tightening as soon as it is snug.

One honest caution. If the tile is original to a 1950s or 1960s house, you probably cannot buy a replacement that matches. That is not a good wall to learn on, and there is no shame in having someone else drill it.

Most leases allow small holes for hanging things but say the wall has to come back the way you found it. So two things protect you: permission in writing, even a text message, and a clean patch at the end.

A fixed mount into two studs leaves four holes about a quarter inch across. That is nothing to repair.

Here is the repair. Back out the screws and take the mount down. If you used metal toggle anchors, push the metal wings through so they drop down inside the wall. That is normal and harmless, and it leaves a hole about half to three quarters of an inch across, which needs a little more work than a screw hole.

For the small screw holes, press lightweight spackle in with a flexible putty knife, slightly overfilling so it sits a hair proud. Let it dry for a couple of hours, then sand it flush with 150-grit paper.

For the bigger toggle holes, or anything over about three quarters of an inch, stick a mesh patch over the hole first, then put on two thin coats of joint compound, sanding lightly between coats. Thin coats always beat one thick one, which cracks as it dries.

Then paint. Ask your landlord or the property manager what paint they use. Many keep a case of one color for the whole building and will just tell you, and some will hand you a small can. If nobody knows, a paint counter can match a sample, but do not cut a chip out of your own wall to get one. Cutting a piece out of a rental wall creates a bigger repair than the one you are trying to fix. In a lot of rentals the walls are a builder flat white and any flat ceiling-white paint is close enough to pass.

When you do paint, use a small roller rather than a brush, so the texture matches the wall around it. Brush marks show.

If you are moving out and have a wall full of holes you would rather hand off, patching and touch-up painting is everyday work for me. Call or text 727-421-2344.

A forward lean is a warning, not a cosmetic problem. If it is visibly drifting, take the TV down the same day and sort it out on the floor.

Then work through it in this order.

First, check the top fasteners. The weight of a TV tries to rotate the top of the mount away from the wall, so the top screws carry the pulling force. If they were driven into bare drywall, or into a plastic cone anchor, they pull out slowly and the whole plate tips forward. Take the TV off and look at those holes. If the edges are crumbled, or you can wiggle a screw with your fingers, that is your answer. The fix is moving to real studs, solid block, or quarter-inch metal toggles.

Second, check level. Put a two-foot level on the wall plate. Many mounts have slotted holes on purpose so you can shift them a degree or two, and some have a fine-tune bolt along the bottom edge.

Third, check the hooks. On most two-piece mounts, the brackets on the TV hook over a lip on the wall plate and then lock with a screw or a pull-cord at the bottom. If one side never dropped all the way down into place, the TV hangs crooked and stands off the wall. Lift it slightly and let it settle straight down, and you will feel it seat.

Fourth, look along the bottom for a safety screw or anti-tilt screw that was never tightened. Plenty of installs skip it.

One more note. If the fasteners were the problem, do not just retighten them into the same holes. Damaged drywall or a stripped hole will not hold the second time. Move over to a fresh spot, or go to a ledger board screwed into two studs.

Soundbars are light, usually four to twelve pounds, so this is one of the easier jobs on a wall.

Start by looking in the box. Most brands include a wall bracket along with a paper template that you tape to the wall and mark through, which takes all the measuring out of it. If yours did not come with one, universal soundbar brackets that clamp onto the TV mount itself run about 25 to 40 dollars, and they keep the bar lined up with the screen automatically.

Spacing matters more than people expect. Leave two to three inches between the bottom of the screen and the top of the bar. Too tight and the bar covers the infrared remote sensor, which on most TVs lives in the bottom bezel, and then your remote stops working from the couch. Too tight also traps heat coming out of the vents along the bottom of the TV.

Keep the bar centered left to right with the screen, not with the wall. If the TV is off center in the room and you center the bar on the wall, the sound will pull to one side of the picture. Also check that the bar's own sensor and status light stay visible, since some bars take their own remote.

For fasteners, two quarter-inch metal toggles in drywall is plenty, or two masonry screws into block. If a stud happens to be right there, use it, but do not slide the bar off center just to reach one. The weight does not justify it.

Last, plan the cord before you hang anything. One HDMI cable to the TV's eARC port and one power cord is the usual setup, and a short paintable raceway hides both. Doing the cable route first saves you taking the bar back down.

A screened lanai feels like it is indoors, but as far as electronics are concerned it is outdoors. Three things do the damage.

Humidity is the first. On a humid night the inside of the case cools below the dew point and moisture forms right on the circuit boards.

Salt air is the second, and it matters a great deal near the beaches and out toward Gulfport and Pass-a-Grille. Salt settles on the boards and corrodes the fine metal traces over time.

Insects are the third, and they surprise people. They crawl in through the vents, nest in the warm chassis, and short things out. Ants and palmetto bugs are the usual culprits.

The real fix is an outdoor TV. They come in three classes: full sun, partial sun, and full shade. For a covered lanai, partial sun or full shade is the right class. SunBrite, Furrion Aurora, Peerless-AV Neptune, and Samsung's Terrace line are the names to look at. They are sealed against moisture and dust, brighter than an indoor set so you can see them in daylight, and rated for a wider temperature range. They also cost two to four times what a comparable indoor TV does, and that is the honest tradeoff.

The cheaper middle path is an indoor TV inside a weatherproof enclosure, or a cabinet with a lockable weather cover, and bringing it inside during hurricane season.

One caution on power. Any outlet out on a lanai needs to be a weather-resistant GFCI receptacle, which is the kind with the test and reset buttons and a cover rated for damp locations. Adding or changing an outlet is electrical work, and in Florida that means a licensed electrician. If your lanai does not already have a proper one, start there.

On the mounting side, lanai walls here are almost always concrete block, which needs masonry anchors rather than drywall anchors. If you want a hand with that part, call or text 727-421-2344.

Bedrooms break the normal eye-level rule, because you are usually propped on pillows or lying flat and looking upward.

Two things get it right.

First, height. Measure from the floor to your eyes while you are in your actual watching position, propped on the pillows the way you really lie. Most people land between 30 and 36 inches. Because your head is already tipped back, you can comfortably look up from there, so the center of the screen goes higher than your eye height, generally 50 to 60 inches off the floor. If the TV goes on the wall across from the foot of the bed, a screen center around 48 inches is a common sweet spot.

Second, tilt. A tilting mount costs about 15 dollars more than a fixed one, and in a bedroom it is the whole difference. Angle the screen down 10 to 15 degrees so it faces you instead of the ceiling. Without tilt, a flat screen seen from well below washes out and the colors shift, which is exactly why bedroom TVs so often look dim and gray.

A few extras worth thinking about. Keep the TV off a wall you share with someone who is trying to sleep, if you have the choice. Keep it out of the path of morning light. And if the bed faces a window, glare will be your main complaint, so a couple of extra degrees of tilt usually solves it.

Same advice as always before you drill: tape a cardboard cutout the size of the TV to the wall, lie down, and look at it for a while. Five minutes there saves four holes in the wrong place.