How to Use Wall Anchors | Match The Anchor To The Wall

Hanging anything from drywall, hollow block, or masonry without hitting a stud means the screw alone won’t hold — it’ll tear right through the surface. That’s where wall anchors come in. They spread the load across more material, turning a weak spot into a secure mounting point. The right method depends entirely on what’s behind the wall and how much weight you’re hanging.

Here’s the approach that works for the most common situations, starting with the easiest installs and moving toward heavier-duty hardware.

Plastic Expansion Anchors And Self-Drilling Types

These are the standard for light and medium loads in drywall — picture frames, small shelves, and lightweight curtain rods. They’re cheap, fast, and don’t require special tools.

For a standard plastic expansion anchor, the basic sequence is:

1. Mark your spot on the wall.
2. Drill a pilot hole sized to the anchor body. The anchor package usually lists the correct bit size.
3. Tap the anchor into the hole until it’s flush with the wall surface.
4. Drive the screw into the anchor. As the screw threads in, the anchor expands and grips the drywall.

Self-drilling or screw-in wallboard anchors skip the pilot hole. You simply drive the anchor itself into the drywall with a screwdriver until it sits flush, then install the screw. These are quicker for lighter items, but a pilot hole gives you more control on harder material.

Toggle Bolts For Heavier Loads In Hollow Walls

When you’re hanging something genuinely heavy — a large mirror, a wall cabinet, a grab bar — a plastic anchor won’t cut it. A toggle bolt spreads the load across a wide area of drywall from behind, which makes it the go-to for hollow-wall applications.

Toggle bolts install differently because the spring-loaded wings have to pass through the hole before they open:

1. Drill a hole large enough for the folded toggle wings to pass through.
2. If the fixture is already in place, attach the screw through the fixture and onto the toggle first.
3. Push the folded toggle through the hole until it clears the wall, then let the wings spring open inside the cavity.
4. Pull the assembly back toward you so the wings seat against the back of the drywall, and tighten the screw until the fixture is snug.

Molly bolts work on a similar principle but use a collapsible metal sleeve. You insert the molly, seat it flush, then tighten the screw to crush the sleeve against the back of the wall. Once set, you can remove the screw and the anchor stays in place for future use.

Concrete And Masonry Require Their Own Anchors

Drywall anchors are useless in solid masonry. Concrete, brick, and block need anchors that bite into the material itself — wedge anchors, expansion shields, or concrete screws. These use a masonry bit for drilling and are rated to hold substantial weight in solid material. Always verify you have the right hardware for the substrate.

Choosing The Right Anchor And Avoiding Common Mistakes

Most anchor failures come down to picking the wrong type for the wall or the load. If you’re hanging something particularly heavy, prioritizing a stud or using a heavy-duty toggle may be the smarter move.

If you’re working on a surface that’s especially tricky, like a tiled wall, the mounting approach changes — but the right hardware makes it doable. Check out our tested anchors for tiled walls to see what holds reliably in that situation.

FAQs

Can I use anchors to hang things without a stud finder?

Yes. Anchors are specifically designed for situations where you’re not hitting a stud. Plastic anchors work for light items, while toggle bolts handle heavier loads in hollow drywall. For very heavy or structural items, it’s worth the effort to locate a stud or use a heavy-duty toggle rated for the weight.

Why did my anchor pull out of the wall?

Pulling out usually means the hole was too large, the anchor was overtightened, or it was undersized for the load. Over-tightening damages the drywall by spinning or crushing the anchor.

Do I need special anchors for heavy items like a TV?

For heavier items like TVs, standard plastic anchors aren’t enough. Toggle bolts are the better choice in hollow-wall applications because their wings spread the load over a wide area. For the most secure install, mount the bracket to a stud, or use heavy-duty toggles when a stud location doesn’t line up.