How to Recognise a Bad Mattress: 8 Warning Signs

Recognizing bad mattress — A worn-out mattress shows up first as morning back pain and tossing — not as visible damage. Our team’s eight signs your mattress is past its use-by date.

James on our team has been asked “is my mattress done?” by friends, family and readers more times than he can count. The visible damage shows up last; the symptoms show up first. Here’s the diagnostic.

1. You wake up with a sore back, shoulder or hip (Recognizing bad mattress)

The single biggest tell. A good mattress should not leave you in pain. Morning soreness that fades within 30 minutes of getting up is almost always a mattress problem.

2. You sleep better in hotels

Hotel beds are often firm and well-supported because they’re replaced every 5 years. If you genuinely sleep better away from home, your bed is probably the issue.

3. Visible sagging or body indents

Run a straight edge (a broom handle works) along the surface. Indents over 3 cm deep are warranty territory for most premium brands and mean the foam or springs have lost integrity.

4. You can feel the springs

The padding layer over the springs is breaking down. Once you can feel the spring outline, it’s usually past saving.

5. It squeaks or pings

Spring noise means individual coils have lost tension or are rubbing against each other. Foundation issue or coil failure.

6. You’re tossing more than you used to

If you’re repositioning every 30 minutes, your mattress is no longer providing pressure relief in any one position.

7. Allergies or asthma have got worse

Old mattresses accumulate dust mites, dead skin cells and (in older homes) mould spores. A noticeable rise in nighttime congestion is sometimes a mattress signal.

8. It’s over 8–10 years old

Even the best mattresses lose support over time. The Sleep Health Foundation and most mattress brands recommend replacement at 8 years for foam, 10 years for hybrid and innerspring.

What to try before buying new

• A mattress topper ($150–$400) can extend a fundamentally-sound mattress by 1–2 years.
• Rotate the mattress 180° every 6 months — see our rotation guide.
• Check your bed base — a sagging or broken base often masquerades as a sagging mattress.

If the answer is “buy a new one”, see our pick of the best mattresses in Australia and how to recycle the old one.

For independent guidance on sleep and wellbeing, the Sleep Health Foundation is a good starting point.