A screw hole is the smallest possible drywall repair — but it's the one most homeowners get wrong, leaving a visible bump or depression that's obvious even after painting. The fix is straightforward: push the broken paper edges inward, fill with proper compound, sand flush, prime, paint. Skip any step and the patch shows.

This guide covers nail holes, screw holes, and small anchor holes (under 1/2 inch). For anything larger, see the related drywall-patch guide.

Before you start

Three things to settle:

1. Spackle vs joint compound. Pre-mixed lightweight spackle (DAP DryDex, 3M Patch Plus Primer) is for small holes — under 1/2 inch. Dries fast (30 min), doesn't shrink, sands smooth. Joint compound is for larger patches. For a screw hole, spackle is the right product.

2. Push paper inward. When a screw or anchor pulls out, the paper face of the drywall tears outward, leaving a small ridge or curl around the hole. If you spackle over this ridge, the patch sits proud of the wall. The fix: gently push the paper edges inward with the corner of a putty knife before applying spackle. Now the patch sits in a small depression that fills flush.

3. Primer is required. Spackle absorbs paint differently than the surrounding wall. Without primer, the patch shows through paint as a slightly-different colour or sheen. A small drop of primer over the patch eliminates this. Don't skip — it's 30 seconds of work that determines whether the patch is invisible.

What you'll need

Tools

Putty knife (1.5-inch flexible)
Sanding block or 220-grit sandpaper
Damp cloth (for cleaning dust)
Small foam roller (for paint touch-up)
Headlamp or flashlight (for raking light inspection)

Materials

Pre-mixed lightweight spackle (DAP DryDex, 3M)
Drywall primer
Touch-up paint (matching wall colour)

Pink-when-wet spackle is forgiving

DAP DryDex spackle is pink when wet, white when dry. The colour change tells you when it's ready to sand — no guessing.

If you sand wet spackle (still pink), it tears and clogs the sandpaper. Wait until fully white-dry. Pink-when-wet products solve the 'is it ready?' question for free.

Step-by-step instructions

Push paper edges inward

Look at the hole. The paper face of the drywall is often torn outward — small curls or ridges around the hole.

Gently push these inward with the corner of a putty knife. The paper folds into the hole, creating a small depression that the spackle will fill flush.

Apply a small dab of spackle

Scoop a small amount of spackle onto the putty knife — about a marble-sized dab.

Press into the hole, then drag the putty knife flat across the wall. The pressure forces spackle into the hole; the flat drag scrapes excess off the surface.

Check for shrinkage

Some spackles shrink slightly as they dry. After the first coat dries (30 minutes for lightweight), look at the patch — if the centre has slumped into a small depression, apply a second thin coat.

Shrinkage is more common with deeper holes. A standard screw hole usually fills in one coat.

Sand smooth

Once fully dry (white, no pink), sand with 220-grit sandpaper. Light circular motion — don't grind hard.

The patch should feel completely flush with the wall. Run your hand across the surface; any bump you can feel will show under paint.

Wipe dust

Use a slightly damp cloth to wipe dust off the patch and surrounding area. Painting over dust produces a gritty finish.

Apply primer to the patch only

Dab a small amount of drywall primer on the patch with a small brush or fingertip. Cover the entire patch and feather the edges into the surrounding wall about 1/2 inch.

Let primer dry per the can — typically 1-2 hours.

Apply paint with a small roller

Use a small foam roller (4-inch) loaded lightly with the wall's original paint.

Roll over the patch, feathering outward 4-6 inches in every direction. Don't paint just the patch — feather wider so the new paint blends with old.

Two thin coats blend better than one thick coat.

Inspect under raking light

Once paint is fully dry (1-2 hours), shine a flashlight at a low angle across the patched area. Look for any visible patch outline, raised area, or texture mismatch.

If anything's visible, identify the issue: bump (sand more), depression (more spackle), texture mismatch (matching texture spray), colour mismatch (paint a wider area).

Common mistakes that cost you

Not pushing paper inward. Spackle over outward-curled paper sits proud. Always tuck the paper into the hole first.
Too much spackle. Patches that sit proud need extensive sanding to flush. A small dab is usually enough.
Sanding wet spackle. Tears and clogs sandpaper. Wait until fully dry (white not pink).
Skipping primer. Spackle absorbs paint differently. Always prime over the patch.
Painting only the patch. Hard edge between new and old paint visible. Feather paint outward 4-6 inches.
Brush instead of roller. Brush leaves smooth texture; wall is rolled. Use a small foam roller for matching texture.

Frequently asked questions

What's the difference between spackle and joint compound?

Spackle: small holes (under 1/2 inch), fast-drying (30 min), low shrinkage, easy to sand. Use for screw holes and dings.

Joint compound: larger patches, dries slower, builds up in coats with sanding between. Use for any patch over 1/2 inch.

Can I use toothpaste as filler?

It works in a hurry but isn't a real fix. Toothpaste shrinks, cracks, and doesn't bond well. Doesn't accept paint cleanly.

Real spackle is inexpensive and lasts years. Use the right product.

Why does my patch show after painting?

Most common cause: skipped primer. Spackle absorbs paint differently than the wall around it. Always prime before painting.

Other causes: aged paint vs fresh paint colour mismatch, brush vs roller texture mismatch, patch not perfectly flush (slight bump or depression).

When to call us instead

If you have many small repairs across multiple rooms, painting whole walls is often faster and more uniform than fighting individual patches. We coordinate paint refreshes as part of larger renovation work.

Book a free 60-minute site visit →

Related Ottawa services

If you're refreshing paint comprehensively after renovation work, our team handles drywall, finishing, and painting as fixed-price scopes. Book a free 60-minute consultation.