How Often to Replace a Mattress (Gadda), and Rotate or Flip It
Turn it head to foot every three months, vacuum and air it on the same day, and plan to replace it somewhere around seven to ten years, sooner if it sags or you wake up stiffer than you went to bed. That’s how often to replace a mattress in one line. The rest of this page is the calendar, the stain method that won’t leave a mouldy patch, and an honest word on foam, spring and the old rui ka gadda.
In brief
- Every week: wash the sheet and protector cover as part of your laundry
- Every 3 months: rotate head to foot, vacuum, air in daylight
- Flip it? Only if both sides are sleep sides
- Replace: roughly 7 to 10 years, or earlier if it sags
- Cotton gadda: re-fluffed (dhunai) every year or two
Prefer to listen? This post as a 2 min video · Video page with transcript
How often to replace a mattress, and how to tell it’s time
Seven to ten years is the common guidance for a decent spring or foam mattress, and it’s a range, not an expiry date. A cheap thin foam may give up in three or four. A well-made one, rotated and protected, can pass ten. Your body is a better judge than the calendar. Look for these signs:
- A dip you can see when the bed is empty, or a valley you roll into.
- Waking stiff or sore, and feeling better after a night somewhere else.
- Springs you can feel or hear.
- A smell or stain that returns after cleaning, or any sign of mould.
- Sneezing and a blocked nose every morning in bed that ease once you’re up.
A sagging mattress is one of the things worth checking when a back keeps aching, but it’s rarely the whole story. Our lower back pain and mattress guide covers how firm is firm enough, and the 6-week rule for kamar dard covers when pain needs a doctor rather than a new bed.
The mattress care calendar
| When | What to do |
|---|---|
| Weekly | Change the sheet; wash the protector every 1 to 2 months |
| Every 3 months | Rotate head to foot; vacuum; air with windows open |
| Twice a year | Flip if two-sided; sun-air a cotton gadda |
| Every 1 to 2 years | Get a cotton gadda re-carded |
| 7 to 10 years | Check hard; replace if it fails the signs |
Anchor the three-monthly job to the season change. When you pull out razais or pack them away, turn the mattress too. Four seasons, four turns, no app needed.
Did you know? Dust mites don’t bite. The morning sneezing comes from their droppings, which build up in bedding and mattresses over years, and that’s why a zipped cover helps allergic sleepers more than any spray.
The quarterly clean, step by step
- Strip everything off, including the protector. Open the windows.
- Vacuum the top, sides and seams with the upholstery tool, slowly. The seams are where skin flakes and dust collect.
- Optional: sprinkle 2 to 3 tablespoons of baking soda over the surface, leave for an hour, then vacuum it off. It softens stale smells a little. It doesn’t disinfect anything.
- Rotate the mattress 180 degrees so the head end is now at the foot. Flip it over only if the maker says both sides are for sleeping; pillow-top and most foam mattresses have one side only.
- Leave it bare for 1 to 2 hours in a bright, airy room before making the bed.
Busy week?
Skip the baking soda and the vacuum. Just rotate the mattress and leave the windows open while you’re at work. That’s the part that spreads the wear. Missed a quarter? Do it this weekend; nothing is lost, the next turn is three months from then.
Stains without soaking
Water that sinks deep into foam or cotton takes days to dry and can go musty inside. So blot, never pour. For sweat, tea or a child’s accident: blot up what you can with a dry towel, dab with a cloth dipped in a cup of cool water with a few drops of mild dish soap, blot again with plain water, then dry with a fan pointed at it for several hours. Cold water for blood. No bleach on the fabric. If a patch still smells of urine days later, a waterproof protector is the long-term answer.
Foam, spring or cotton gadda: which lasts?
Spring mattresses usually last the longest if they’re well made, and air moves through them, which helps in humid months. Foam varies hugely. High-density foam holds its shape for years; soft, low-density foam dips early, sometimes within a couple of years. Press your palm in at the shop and watch how slowly and fully it rises. Cotton gadda (rui ka gadda) is cheap, cool in summer and very desi. It compresses into lumps, so homes traditionally send it to the dhuniya for re-carding (dhunai) every year or two, which fluffs the cotton back up. It must be dried in the sun often, because cotton holds moisture.
A mattress protector costs a fraction of a mattress and does more for its life than any cleaning hack.
Baby cot mattress: the one that has rules
For a baby, comfort isn’t the goal; safety is. The cot mattress must be firm and flat, fit the cot with no gap wider than two fingers at the sides, and carry only a fitted sheet. No pillow, bumper, soft toy or folded razai on top, and never propped or tilted. Baby sleeps on their back. A second-hand cot mattress should be clean, dry, firm and not sagging, or skipped. More on layers and safe sleep in cold months in baby winter clothes and safe sleep.
Tiny dark spots on the seams, itchy bites in lines, or a sweet musty smell can mean bed bugs. Don’t spray household insecticide on a mattress anyone sleeps on; call a pest control service. Mould on a mattress means replace it, especially for anyone with asthma. Back pain with numbness, weakness in a leg, fever or trouble passing urine needs a doctor the same day.
Find more two-minute routines in Tiny Habits. Today: check the date on your phone, and if it’s near a season change, turn the mattress tonight.
Mattress questions, answered
How often should you replace a mattress?
Roughly every 7 to 10 years for a good mattress, sooner for cheap thin foam. Replace it whenever it sags visibly, you wake stiff, or it smells or shows mould after cleaning.
How often should I rotate my mattress?
Every three months, head to foot. Some makers suggest more often in the first few months while the materials settle. Rotating spreads the wear so one hollow doesn’t form under your hips.
Should I flip my mattress?
Only if it’s double-sided. Most modern foam and pillow-top mattresses have one sleep side, and flipping them puts you on the firm base layer. Check the label or ask the shop.
How often should a mattress be cleaned?
A vacuum and airing every three months is enough for most homes. Spot-clean stains as they happen. The sheet and protector do the weekly work.
Does baking soda clean a mattress?
It freshens smells a little, and that’s all. It won’t disinfect, remove deep stains or kill dust mites. Vacuum it off thoroughly afterwards.
Can a bad mattress cause back pain?
A sagging one can add to it, especially morning stiffness. Back pain has many causes, though. If pain lasts more than six weeks or comes with numbness or weakness, see a doctor.
Is a cotton gadda better than foam?
Neither is better for everyone. A cotton gadda is cool and cheap but needs sun and re-carding. Good foam keeps its shape with less work but can feel hot in summer.
Can I put a mattress in the sun?
Yes for a cotton gadda, and it helps. Foam can yellow and break down in strong direct sun, so air foam in a bright room instead of on the roof.
Is a used cot mattress safe for a new baby?
Only if it’s firm, flat, clean, completely dry, not sagging and fits the cot snugly. When in doubt, buy a new one; it’s the one part of the cot worth spending on.