Fill a hole in a wall
Save £50–100 today
30 mins · Beginner · Saves £50-100 vs a tradesperson
Last updated: February 2025
Before you start
This works for small to medium holes and cracks in plaster, plasterboard, or brick walls — caused by rawl plugs, nails, or general wear.
You will need ready-mixed filler (£3–5 from any DIY shop), a filling knife, fine sandpaper, and a damp cloth.
Tools needed
- !Ready-mixed filler — buy: £3–5 from any DIY or hardware shop
- !Filling knife / putty knife — buy: £3–5, reusable for future repairs
- ✓Fine sandpaper (120–180 grit) — most homes have some
- ✓Damp cloth — any kitchen cloth will do
Clean the hole
Remove any loose plaster, dust, or old filler from the hole using a screwdriver tip or stiff brush. The hole needs to be clean for the filler to bond.
Where beginners go wrong
Skipping the dampening step, causing the filler to crack as it dries.
Applying one thick layer on a deep hole instead of building it up in thinner coats.
Painting straight over filler without priming, leaving a dull patch on the wall.
Stop and call a tradesperson if...
Cracks keep reappearing in the same place — this can indicate structural movement
The crack runs diagonally from a door or window corner
The hole is larger than your fist
Cost breakdown
What you just learned
You now understand how wall filler works and how to apply it cleanly. These skills transfer to skimming larger areas, repairing cracks in ceilings, and preparing walls for decorating.
✅ Completed by 2,341 people
⚠️ Watch out if you rent
Filling small nail holes when you leave is usually expected and helps protect your deposit. Check your tenancy agreement — most require walls to be returned to their original condition.
How long will this actually take me?
First time
30–45 mins (plus 1–4 hrs drying)
With experience
15 mins
Budget a full day if you need to paint over it — the filler must be fully dry and primed first.