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Wall Crumbling When You Drill? The Anchors That Hold in Soft Walls

Soft drywall and old plaster crumble under a drill and strip plastic anchors. Find a stud if you can, and use toggle bolts where you cannot.

By Jamilur Rahman Updated November 5, 2026 · 6 min read

Time
20 min
Cost
Under $20
Difficulty
Medium
A drill bit entering a painted wall with white powder and crumbs of drywall falling around the hole
In this guide
  1. Quick answer
  2. Free vs. permanent fix
  3. What you'll need
  4. Why it happens
  5. Try this first (free)
  6. When free fixes aren't enough
  7. Buy the fix
  8. Old house? Check before you drill
  9. Which anchor for which load
  10. What to skip
  11. FAQ
  12. Related problems

Quick answer

Walls crumble when the drill hits soft or brittle material: a chalky drywall core, old plaster, or a hole drilled too fast with the hammer setting on. Find a stud first and screw straight into it. If there is no stud, drill slowly with a sharp bit and use heavy-duty toggle bolts. Their wings open behind the wall and spread the load, instead of gripping a crumbly hole.

Free fix vs. permanent fix

Free fix · 15 minutes

Hit a stud and drill gently

  • Find the stud with a knock test or a stud finder
  • Tape over the spot before you drill
  • Use drill mode at low speed, not hammer mode
  • Patch any hole that crumbled before you try again

How long it lasts: A stud mount lasts as long as the wall. But there is often no stud where you want to hang something.

Most readers choose Permanent fix
Heavy-duty toggle bolts (spring-wing) (illustration)
Illustration

Heavy-duty toggle bolts

A plastic anchor grips only the walls of the hole, and soft drywall or plaster crumbles away from it. A toggle bolt opens wings behind the wall and clamps against it, so it holds even when the hole's edges are rough.

What to get: Heavy-duty toggle bolts (spring-wing)

How long it lasts: Years. The wings sit behind the wall and the load spreads over a wide area.

Check price on Amazon

As an Amazon Associate I earn from qualifying purchases.

What you'll need

  • Drill

    Use drill mode, never hammer mode

    You have it

  • Masking tape

    Stops paint chipping around the hole

    You have it
  • Stud finder (illustration)
    Illustration

    Stud finder

    Pick one with live wire detection

    Check price

  • Spackle

    Patches a hole that already crumbled

    You have it
  • Our pick
    Heavy-duty toggle bolts (illustration)
    Illustration

    Heavy-duty toggle bolts

    Check the hole size and load rating on the pack

    Check price
  • Metal self-drilling drywall anchors (illustration)
    Illustration

    Metal self-drilling drywall anchors

    For light items on firm drywall

    Check price

Why it happens

1

Thin or old gypsum drywall

Drywall is a chalky gypsum core between two sheets of paper. Old, damp or low-grade board is soft and powders when a bit cuts through.

2

Old plaster

Lath-and-plaster walls are hard on the surface but can break off in chunks when the plaster loosens from the wood strips behind it. Drilling too fast knocks pieces loose.

3

The wrong bit or setting

A dull bit, or hammer mode on a drywall wall, batters the board instead of cutting it. Use a sharp bit in plain drill mode.

4

Plastic anchors in a soft wall

A ribbed plastic anchor relies on grip. In a soft wall it spins or pulls out, and every failed try makes the hole bigger.

Try this first (free)

Do these in order, starting with the simplest.

  1. Find a stud and check for hazards

    Tool used: Stud finder

    Knock along the wall. A hollow sound is drywall, a solid thud is a stud. Or scan with a stud finder. Studs are usually 16 inches apart, center to center. Avoid spots above or below outlets and switches, which can hide wires. If you hit a stud, drive a wood screw straight in. No anchor needed.

    Stud finder (illustration)
    Illustration

    Tool for this step

    Stud finder · Pick one with live wire detection

    Check price on Amazon

  2. Tape the spot

    Tool used: Masking tape

    Put a square of masking tape over your pencil mark. It keeps the paint and the top layer from chipping around the hole as the bit goes in.

  3. Drill slowly in drill mode

    Tool used: Drill

    Use a sharp bit, hammer function off, at low speed with light pressure. In hard plaster, use a carbide-tipped masonry bit and drill in short pulses. Pull the bit out now and then to clear the dust.

  4. Patch a hole that already crumbled

    Tool used: Spackle

    Brush out the loose crumbs, fill the hole with lightweight spackle and let it dry. Then drill again in a firm spot, about 2 inches away.

  5. Fit the toggle bolt

    Tool used: Heavy-duty toggle bolts

    Drill the hole size printed on the pack, often 3/8 to 1/2 inch. Thread the bolt through your bracket first, then screw on the wings and fold them. Push them through the hole until they spring open, pull back gently and tighten. If you take the bolt out later, the wings drop inside the wall.

    Heavy-duty toggle bolts (illustration)
    Illustration

    Tool for this step

    Heavy-duty toggle bolts · Check the hole size and load rating on the pack

    Check price on Amazon

When free fixes aren't enough

A stud is the best place for anything heavy, but you cannot always hang an item where one sits. When there is no stud, a toggle bolt is the fix. If the drywall is damp, soft or breaking in chunks well beyond the hole, stop: no anchor will hold in it, and the wall may have a moisture problem. Plaster that comes off in big pieces helps a toggle only if it is still firmly attached to the lath. For a TV mount or a bookcase that could tip, use studs, or ask a pro.

Buy the fix

Still stuck after the free fixes? These are the products we would look at.

Our picks compared
PickProductFixesWho it's forBuy
Best pick
Heavy-duty toggle bolts (spring-wing) (illustration)
Illustration
Heavy-duty toggle bolts (spring-wing)
anchors that spin or pull out of soft, crumbly walls Anyone hanging a shelf, a heavy mirror or a cabinet where there is no stud. Check price
Budget pick
Metal self-drilling drywall anchors (illustration)
Illustration
Metal self-drilling drywall anchors
light items in firm drywall without drilling a pilot hole Picture frames, a light shelf or towel hooks in drywall that is still firm. Check price
Best pick
Heavy-duty toggle bolts (spring-wing) (illustration)
Illustration

Heavy-duty toggle bolts (spring-wing)

Fixes: anchors that spin or pull out of soft, crumbly walls

Look for: A load rating on the pack for 1/2-inch drywall; Metal wings and a bolt long enough to pass through your bracket and the wall; The hole size, or a matching drill bit, listed on the pack.

Who it's for
Anyone hanging a shelf, a heavy mirror or a cabinet where there is no stud.
Honest downside
You are hanging a TV or a bookcase that could tip. Use studs. And keep the real weight well under the pack's rating.
Check price on Amazon
Budget pick
Metal self-drilling drywall anchors (illustration)
Illustration

Metal self-drilling drywall anchors

Fixes: light items in firm drywall without drilling a pilot hole

Look for: Metal, not plastic; Screws included; A weight rating printed on the pack.

Who it's for
Picture frames, a light shelf or towel hooks in drywall that is still firm.
Honest downside
The wall is plaster or already powdery at the hole. They need solid drywall to bite, and they are not for heavy loads.
Check price on Amazon

As an Amazon Associate I earn from qualifying purchases. We don't show prices because they change, so use the button to see today's price.

How we picked: How we picked: this page is based on drywall and plaster care guides, anchor maker instructions and load charts, and the problems and fixes people report in reviews. We do not test products by hand.

Old house? Check before you drill

Homes built before 1978 may have lead paint, and some older plaster and joint compound contain asbestos. Drilling makes dust. If you are unsure, test first. Keep the dust down with tape, wipe with a damp cloth and use a HEPA vacuum, never a broom. Do not dry sand.

Which anchor for which load

  • Pictures and small decor: a metal self-drilling anchor, if the drywall is firm.
  • Shelves and mirrors with no stud: toggle bolts.
  • TVs, bookcases and anything that can tip: screw into studs, or call a pro.

What to skip

Plastic ribbed anchors and a longer screw

Plastic expansion anchors grip the sides of the hole, so a crumbly wall lets them spin or pull out. A longer screw into hollow drywall has nothing to bite. Do not push harder or use a bigger drill. Use an anchor that works behind the wall.

Frequently asked questions

Why does my drill make such a big hole in drywall?
A dull bit, hammer mode, too much speed or too much pressure all tear the gypsum instead of cutting it. Tape the spot, switch to drill mode, use a sharp bit and let the bit do the work.
How do I stop plaster from crumbling when I drill?
Mask the spot with tape, start with a small pilot hole using a sharp carbide masonry bit, keep hammer mode off and use light pressure. If big chunks fall away, stop. The plaster may have come loose from the lath.
How much weight can a toggle bolt hold?
It depends on the size and the thickness of the wall. Read the rating on the pack for 1/2-inch drywall and stay well under it. Anything that could hurt someone if it fell belongs on studs.
Can I reuse a hole that crumbled?
Patch it with spackle, let it dry and drill again nearby. For a small crumbled hole you can also use a toggle bolt with a wide washer, but only if the wall around it is still firm.

As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure

Heavy-duty toggle bolts (spring-wing) (illustration)
Illustration

Our pick: Heavy-duty toggle bolts (spring-wing)

Check price