Drywall Nail Pops: Why They Happen and How to Fix Them for Good

Nail pops are the small round bulges, circular cracks or exposed nail heads that show up in rows along walls and ceilings, often in the first few years after a house is built or after a dry winter. They are a cosmetic problem, but filling them with spackle alone almost never lasts, because the cause is a loose fastener, not a hole.

Why nails pop

Drywall in many homes was attached with nails into wood studs and joists. Lumber shrinks as it dries and swells and shrinks with seasonal humidity. As the wood moves, it can loosen its grip on a nail, and the drywall panel shifts slightly away from the framing. When something presses on the wall, or the wood moves back, the nail head pushes through the compound and paint. Screws hold far better because their threads grip the wood, which is why most modern drywall is screwed.

What you see	Likely cause
Round bump or crack over a fastener	Classic nail pop
Several pops in a straight vertical or horizontal line	Fasteners along one stud or joist
Pops plus long cracks at seams	Seasonal movement or settling
Many pops on a ceiling with sagging	Fasteners failing on ceiling joists: inspect for loose panels or water
Rusty spot over a fastener	Moisture reaching the nail

Before you start

Find the stud. The popped nail is almost certainly in one, so the new screw goes in the same vertical line. If the house was built before 1978, the EPA notes it is more likely to have lead-based paint, and sanding painted walls can create lead dust; test first or use lead-safe methods. Textured ceilings and older patching compounds may contain asbestos, according to the EPA, so have them tested before sanding.

Fix a nail pop

1. Press the panel tight. Push firmly on the drywall next to the pop so it sits flat against the stud.
2. Add a screw. Drive a drywall screw into the stud about 1-1/2 inches above or below the popped nail. Set the head just below the surface without breaking the paper face. A dimpler bit stops at the right depth.
3. Deal with the nail. Drive the popped nail back in with a nail set so its head is below the surface, or pull it out if it comes easily and fill the hole.
4. Scrape loose material from around both fasteners.
5. Fill and feather. Apply a thin coat of compound over each fastener with a putty knife. When dry, add a second coat a little wider with a 6-inch knife. A third coat may be needed.
6. Sand lightly, prime and paint. Prime the patches so they do not show through the finish.

Fixing many pops at once

If an entire wall or ceiling has pops, work along each stud or joist line, adding screws next to every popped nail and, if desired, between existing fasteners. Then finish all the spots and repaint the whole surface for an even sheen. Waiting until after a full heating season often means most movement has already happened, so the repair lasts longer.

Screw pops and taped seams

Screws can pop too, usually when they were driven too deep and broke the paper face, or missed the stud. In that case, back the screw out, drive a new screw an inch or two away into solid framing, and fill both holes. If pops line up along a taped seam, the seam tape may also have loosened; cut away any bubbled tape, re-embed new tape in compound and finish the seam along with the fasteners.

Common mistakes

• Only filling the bump. Without a screw, the nail pops again.
• Driving the screw too deep and tearing the paper face, which leaves no holding power.
• Hammering the nail without a nail set, denting the wall.
• Missing the stud, which leaves the screw holding nothing.

When to call a pro

Call a drywall contractor if ceilings sag between joists, if panels move when pressed, if pops are accompanied by large cracks or water stains, or if the problem covers whole rooms. Sagging ceilings can be a sign of water damage or failing fasteners and should be checked promptly, because ceiling panels are heavy. A stain or rust around fasteners means moisture is getting in, and the source needs to be found before cosmetic repairs.