Wall plug won't hold
Difficulty: Medium · Time: approx. 20 minutes
If a wall plug spins or slips out, it's almost always the wrong plug for the wall type or a hole drilled too large. With the right plug, even a heavy load holds securely.
The most important step is finding out what kind of wall you have: solid (concrete, solid brick), perforated brick/aerated concrete, or hollow wall (plasterboard). Each needs a different type of plug.
What you'll need
- Drill + matching drill bit
- Plugs that match the wall type + screws
- Vacuum or brush (to clean the hole)
- Optional: cavity plugs for plasterboard walls
Step by step
- 1
Identify the wall type
Knock on the wall: a hollow sound usually means plasterboard. A solid sound means concrete or brick. When drilling, the dust shows the colour (grey = concrete, red = brick, white = plaster/aerated).
- 2
Choose the right plug
Solid wall: standard expansion plug. Perforated brick/aerated concrete: a longer plug that knots itself. Plasterboard: cavity plug. The drill diameter equals the plug diameter.
- 3
Drill and clean the hole
Drill exactly the plug diameter and the right depth (plug plus a little extra). Vacuum the hole out – drilling dust stops the plug gripping.
- 4
Insert the plug
Push the plug in flush (a light tap, not by force). If it stands proud, the hole is too small; if it disappears loosely, it's too large.
- 5
Drive the screw
Drive in the matching screw – the plug expands and grips the wall. Only now attach the load.
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Upload a photo →Frequently asked questions
- My plug spins – what now?
- Usually the hole is too large. Fixes: use a larger plug, fill the hole with knead-plug compound and reset, or use a cavity plug.
- How do I recognise a plasterboard wall?
- It sounds hollow when knocked and the drill dust is white and very fine. This needs a cavity plug – a normal expansion plug won't hold.