Hanging Things on the Wall

The most common mistake is hanging art too high. Aim for the center of the picture at 57 to 60 inches from the floor. If you have tall ceilings, resist the urge to slide everything up. Eye level does not change just because the ceiling did.

Here is the easy math so you do not have to guess. Measure the height of the frame and divide by two. Add that number to 58. Then subtract the distance from the top of the frame down to the taut hanging wire, or down to the hook slot on the back. That final number is how high off the floor your nail or hook goes.

An example. Say the frame is 24 inches tall. Half of that is 12. 58 plus 12 is 70, so the top of the frame lands at 70 inches. The wire pulls up to about 3 inches below the top of the frame, so 70 minus 3 is 67. Put the hook at 67 inches.

Two exceptions worth knowing. Over furniture, the picture should relate to the furniture rather than the room, so 6 to 8 inches above the back of the sofa looks right even if the center ends up a little high. And in a hallway or a stairwell where people are always walking past, hang a touch higher so shoulders and elbows miss it.

Mark your spot with a pencil on a strip of blue painter's tape. The tape gives you something to write on, and it keeps the paint from chipping when you drive the nail.

Plenty of St. Petersburg homes are concrete block, and almost every how-to video online assumes wood framing and drywall. Block is a different job.

First, know what is behind your drywall. In a lot of Florida block houses, the inside face of an exterior wall is 1/2 inch drywall attached to thin 1x2 wood furring strips, with an air gap behind the strips, and then the block. So your drill goes through drywall, hits nothing, then hits something very hard. That is normal. A regular drywall anchor is useless there, because it has nothing to grab.

Most Florida block is hollow. The outer shell of each block is only about 1 to 1 1/4 inches thick, with open space behind it. That changes what you should buy.

For block, masonry screws are the everyday answer. Match the bit to the screw. A 3/16 inch Tapcon uses a 5/32 inch bit, and a 1/4 inch Tapcon uses a 3/16 inch bit. Drill the hole at least 1/2 inch deeper than the screw will reach, so the dust that the screw makes has somewhere to go. The screw needs to bite at least 1 inch into the block, and 1 3/4 inches is about the most that helps. Buy the screws long enough to cross the drywall and the air gap and still get that bite. On a furred-out exterior wall that usually means a 3 1/4 or 4 inch screw.

Keep the drill straight, and blow or vacuum the dust out of the hole before you drive the screw. Dust left in the hole is the number one reason a masonry screw spins and never tightens.

For something truly heavy, use a sleeve anchor or a toggle-style anchor made for hollow block. Skip wedge anchors. Those are made for solid concrete, and in a hollow block wall there is nothing for them to expand against.

A regular drill will get through block slowly and will wear out cheap bits. A hammer drill makes it easy. If you do not own one and do not want to buy one for a single mirror, that is a fair reason to call. Dominic has the hammer drill and the bits: 727-421-2344.

Weigh the mirror first, at least roughly. Stand on a bathroom scale holding it and subtract your own weight. That one number decides everything else.

Under 20 pounds, a good hook rated above the mirror's weight into solid drywall is usually fine. Over 20 pounds, get into framing. Find two studs with a stud finder, confirm with a small test hole placed low or where the mirror will cover it, and drive #10 wood screws 2 1/2 inches long through D-rings mounted on the mirror frame. Two points of support also keeps the mirror from going crooked every time a door slams.

If the studs do not land where you need them, use 1/4 inch metal toggle bolts, the kind with a plastic strap you snap off, not plastic expanding plugs. In 1/2 inch drywall a pair of those will carry a 60 pound mirror without trouble. If the wall is concrete block, skip drywall anchors entirely and use masonry screws long enough to bite into the block.

For big framed mirrors, a French cleat is the strongest and most forgiving method. It is two strips of wood or aluminum cut at a 45 degree angle. One screws to the wall, one screws to the mirror, and they hook together. The weight presses in toward the wall instead of pulling straight out, and you can slide the mirror left or right to center it.

One more thing. Skip the thin sawtooth hanger that came stapled to the back. Those are meant for small pictures and they let go.

If it is a 70 pound antique going over a bed and you would rather not risk it, Dominic hangs mirrors like that regularly. Call or text 727-421-2344 for a free estimate.

Package ratings are measured in a lab with the weight hanging straight down, flat against the wall. Real shelves and mirrors pull outward as well as down, and that outward pull is what rips anchors out of drywall. So halve the number on the box and you will be about right.

Rough real-world limits in 1/2 inch drywall:

Thin plastic cone anchors, the blue or yellow ones in the junk drawer. 10 to 15 pounds total. Good for a light picture, nothing else.

Self-drilling threaded plastic anchors, the big white ones that look like a screw. Around 25 pounds each. Fine for a towel bar or a small frame.

Metal molly bolts, also sold as hollow-wall anchors, which flare open behind the drywall. 25 to 50 pounds each, and they hold their grip better over time than plastic does.

Metal strap toggles, such as a SnapToggle. 100 pounds and up each. This is the one to use for anything you actually care about.

Two other things matter. Spacing: keep anchors a couple of inches apart and a couple of inches away from a corner or a drywall seam, so they are not working against each other in weak material. And thickness: an anchor is sized for a specific wall thickness, so if you are drilling into 3/8 inch drywall in an older home, buy anchors rated for that and expect less.

Nothing beats a screw in a stud. A single #10 screw driven 1 1/2 inches into framing carries more than any anchor on the shelf, costs about 20 cents, and will not let go. Use anchors when you cannot reach a stud, not as your first choice.

A gallery wall looks professional for one reason: consistent spacing. Pick 2 inches for small frames or 3 inches for large ones, then hold that gap everywhere. Uneven gaps read as sloppy even when every frame is perfectly level.

Do the layout on the floor, not the wall. Arrange the frames on the carpet until you like it. Put the biggest or boldest piece slightly off center rather than dead middle, and mix orientations so the eye moves around.

Now copy it up onto the wall. Trace each frame onto kraft paper or a grocery bag, cut out the shapes, and write on each one how far below the top edge the hanging wire sits. Tape the paper shapes to the wall with painter's tape and step back into the doorway. This is the step people skip, and it is the step that saves you from a dozen extra holes. Move the paper around freely, take a photo, live with it for a day if you want.

When you are happy, drive the nail or hook right through the paper at the mark you wrote, then tear the paper away. The frame lands exactly where the paper was.

Two details that help. If the group sits over a sofa, keep the whole arrangement inside the width of the sofa rather than wider. And if the frames are different depths, hang the shallow ones first so you can judge how the group reads.

For a grid of identical frames, measure every position from one corner mark rather than from the frame next to it. That way small errors do not add up as you work across the wall.

Above a window there is usually a header of solid wood, but it can sit higher than where you want the brackets, and out toward the ends there may be nothing to hit at all. So plan on anchors. In a concrete block house you may find a concrete lintel above the window instead of wood, in which case you are drilling masonry and you want a masonry bit and masonry screws.

For light or medium curtains, 1/4 inch metal strap toggles hold a rod easily. Drill the hole the size printed on the package, push the toggle through, snug the plastic strap, snap it off, then screw the bracket on. Do not overtighten, and do not try to reuse the hole if you change your mind.

For heavy blackout drapes, or a wide rod that needs a center support, run a 1x4 board painted the wall color across the whole window. Screw it into studs at both sides with 2 1/2 inch screws, then screw the brackets into the board wherever you like. It gives you unlimited bracket placement and it carries real weight.

Heights and widths, since this is where rooms go wrong. Mount the brackets 4 to 6 inches above the window trim, or higher toward the ceiling if you want the room to feel taller. Run the rod at least 3 to 6 inches past the window on each side, and up to 8 to 12 inches per side if you want the curtains to stack fully off the glass. Hem length should stop either about 1/2 inch above the floor or puddle an inch on it, nothing in between.

Measure both bracket heights down from the ceiling rather than up from the floor. Floors in older Florida houses are rarely level, and it is the ceiling line your eye compares the rod to.

Check the bare shelf with a 24 inch level before you blame anything. If the empty shelf is level and it only tilts when loaded, the hardware is the problem. If it tilts empty, the holes are the problem.

Holes drilled off level are the usual cause. Fix it by pulling the bracket, patching the bad hole with lightweight spackle and a scrap of drywall tape if the edges are chewed up, then re-marking. Mark down from the ceiling rather than up from the floor, and draw one long pencil line with the level before you drill anything.

Anchors pulling loose look different. The shelf started out level and slowly drooped over a few weeks. That is the drywall crumbling around a cheap plastic anchor. Move up to 1/4 inch metal toggles, or better, hit at least one stud. A floating shelf puts a lot of outward pull on its top fasteners, because the shelf acts like a lever against the wall.

Bending rods happen on cheap kits loaded with books or a row of plants. You can sometimes bend the rods back up a little with a rubber mallet, but treat that as a stopgap. The real fix is a bracket with a flat steel plate and thicker rods, or two brackets instead of one, and less weight on the shelf.

One small trick. If the wall itself bows, slip a thin washer or two behind the low end of the bracket to shim it. Nobody will ever see it, and the shelf will read level from across the room.

Three no-damage options, in order of how much weight they carry.

Adhesive strip pairs are the cleanest. Large picture-hanging strips are rated to hold a 16 pound frame when you use four sets. The instructions matter more than people think. Wipe the wall with rubbing alcohol, not a household cleaner, because cleaners leave a film. Press each strip firmly for 30 seconds. Hang the item, then take it back off the wall, press the wall-side strips for another 30 seconds, and wait a full hour before you load it. Skipping that hour is the usual reason strips fall. Also wait a week after fresh paint before sticking anything to it.

Thin metal picture hooks, the kind with one or two hardened pins, hold roughly 20 to 30 pounds and leave holes you can barely find later. Push-through wire hooks, sold under names like Monkey Hook and Hercules Hook, are a bent wire you push through drywall by hand with no drill, good for around 20 to 35 pounds in 1/2 inch drywall. Ignore the very high numbers on some of those packages.

One Florida warning about adhesive strips. Heat and humidity beat them. Do not use them in a bathroom, a garage, a lanai, or any room that is not air conditioned. The adhesive softens and things come down on a hot afternoon. Use a pin hook in those spots instead.

At move-out, buy a small tub of lightweight spackle and a 1 1/2 inch putty knife. Press a dab into each hole, scrape it flush, let it dry an hour, then rub it lightly with a damp paper towel instead of sanding, so you do not scuff the paint. Pinholes disappear. Anchor holes do not, which is the real reason to avoid anchors in a rental.

Worth a look at your lease first. Some spell out what is allowed, and a quick check beats a guess.

The thing that ruins bathroom mirrors in Florida is not falling off the wall. It is the black or cloudy spots that creep in from the edges. That is the silver backing corroding, because moisture got behind the glass and sat there. Once it starts, you cannot fix it. You replace the mirror.

So build in airflow. Mount the mirror on clips or a cleat that holds it slightly off the wall instead of gluing it flat with mastic. If the mirror sits down on the vanity backsplash, raise it so water running down the tile cannot wick into the bottom edge. A 1/4 inch gap at the bottom is plenty, and nobody notices it.

Use stainless steel or coated screws and clips. Plain steel hardware in a bathroom rusts and can leave orange streaks on light tile, and out near the beaches the salt air speeds that up.

If you are buying new, look for a mirror sold for bathroom use. The better ones have a protective coating over the silvering and a sealed edge. Framed mirrors tend to last longer than frameless ones, because the frame shields the vulnerable edges.

And run the fan. Many bathroom fans in older St. Petersburg homes are undersized, or they vent into the attic instead of outside, which just moves the moisture somewhere worse. Twenty to thirty minutes after a shower, with the door cracked open, does more to protect the mirror, the paint, and the caulk than anything else on this list.

If the fan itself is not working, that is licensed electrical work in Florida. Call a licensed electrician for it.

Old plaster is hard and brittle. It was troweled over thin wood strips called lath, and the plaster in the gaps between those strips has nothing behind it. Hammer a nail in and you get a spiderweb crack, or a chunk pops off the back side where you cannot see it.

The method that works every time. Stick a piece of blue painter's tape over your mark. It keeps the surface from chipping and stops the bit from wandering. Pick a carbide-tipped masonry bit slightly smaller than your screw. Set the drill to its lowest speed, and if your drill has a hammer setting, make sure it is off. Start with very light pressure and let the tip score the surface before it bites.

Once you are through the plaster, you may feel the bit hit soft wood. That is the lath, and it is good news, because it gives you something to screw into. If the bit goes into empty space instead, back out and use a metal toggle bolt sized for the full thickness of the wall. Plaster and lath together often runs 3/4 to 1 inch thick, so buy toggles rated for that thickness, not ones sized for 1/2 inch drywall.

For small frames under about 10 pounds you can skip the drill. Use a picture hook with two thin hardened pins and tap it gently through a piece of tape.

If the plaster does crack, do not panic. Lightweight spackle fills a hairline fine. For anything wider than a pencil line, use a setting-type patching compound, feather it out wide with a 6 inch knife, and touch up the paint.

Manufacturers include the cheapest hardware that will pass a basic test. It is rarely matched to your wall or to your plans for the shelf.

The typical failure goes like this. The shelf goes up and looks fine. You load it with books, a stack of plates, or three potted plants, which is 40 pounds nobody weighed. The plastic anchors slowly crush the drywall around them. A few weeks later the shelf leans, then one side lets go, and you have a hole the size of a fist to patch.

What to do instead. Add up the weight you actually intend to store, then double it, because shelves always collect more than planned. Buy hardware rated above that number. If a stud lands behind the shelf, use #10 wood screws long enough to go 1 1/2 inches into the wood. If not, use 1/4 inch metal strap toggles. Either way, put the included plastic plugs in the junk drawer.

The same goes for the screws themselves. A 1 1/4 inch screw cannot reach past drywall into anything solid. On a concrete block wall with furring strips, you may need a masonry screw 3 1/4 inches or longer to get a real bite into the block.

One quick check after you install it. With the shelf still empty, put a hand flat on top, press down, and pull outward, firmly but without yanking. Better to find out it is weak now than after it is loaded with your grandmother's dishes.

A well-installed hanging does not need babysitting, but a yearly look takes two minutes and catches the slow failures before they become loud ones.

What you are checking for. Push up on the bottom of a mirror and see whether the top pulls away from the wall. Look directly above each anchor for a fine crack or a small bulge, which means the anchor is working its way out. Run a fingertip under a shelf bracket and feel for a gap. Check whether the hanging wire on the back has frayed or stretched, because old braided wire does eventually give.

A few things speed up trouble. A door that slams in the same wall. Anything mounted on a wall shared with a laundry room, because a spin cycle vibrates constantly. Adhesive strips anywhere that gets hot, which in Florida includes garages, lanais, and any room shut off from the air conditioning in August. And humidity in general, which softens adhesives and the paper face of drywall over the years.

While you are at it, glance at anything hung near an exterior door or window for rust streaks. Out toward the beaches, salt air works on plain steel hardware surprisingly fast.

If you find a loose anchor, do not just retighten the same screw in the same hole. The hole is already worn and it will not hold. Move over a couple of inches and use fresh hardware, or step up to a metal toggle, and patch the old hole with lightweight spackle.

This is one to hand off, and the reason is not only the wiring.

A chandelier hangs from an electrical box in the ceiling, and a standard box supports a fixture of no more than 50 pounds. Anything heavier has to be supported independently of the box, or hung from a box that is listed and marked for that weight, installed correctly. Getting that wrong puts a heavy object directly over the spot where your family eats.

Florida treats fixture wiring as licensed electrical work, so the right move is a licensed electrician. Ask them to confirm the box rating for your fixture's weight, and to check that the switch and any dimmer suit the bulbs you want.

What you can do yourself is all the deciding, which is most of the result.

Size. A dining chandelier looks right at roughly half to two thirds the width of the table. For a 42 inch wide table, that is a 21 to 28 inch fixture.

Height. The bottom of the fixture should sit 30 to 36 inches above the tabletop. Go a little higher if your ceiling is taller than 8 feet, adding roughly 3 inches for each foot of ceiling above 8.

Also decide before the electrician arrives whether the fixture centers on the table or on the room. Those are often not the same point, and the table wins. Mark your chosen center on the ceiling with a bit of painter's tape so there is no confusion.

Be honest about what you are buying. You are not paying for someone to hold a hammer. You are paying for the right anchors, a hammer drill for block walls, a level long enough to matter, and someone who has done it enough to get it straight the first time instead of the fourth.

Good candidates for doing it yourself. Anything under about 20 pounds. Any single frame. Curtain rods where the studs cooperate. Anything in a room where a stray hole does not bother you. The tools are a stud finder, a level, a drill, and a box of toggles, which runs under a hundred dollars and stays useful for years.

Good candidates for calling someone. Heavy mirrors and large framed art. Concrete block walls, if you do not own a hammer drill. Plaster you are afraid of cracking. Gallery walls with many pieces, where small errors add up. And anything going above a bed, a crib, or a sofa, where you want it right rather than close.

One practical note. Several items in one visit costs far less per item than one at a time, so make a list before you call. If you have a mirror, two curtain rods, and a shelf, get them all done in the same trip.

Dominic is one guy with a truck who answers his own phone. He hangs mirrors, art, floating shelves, curtain rods, and TVs, and estimates are free. Call or text 727-421-2344 and tell him what you have.