Stop a mattress sliding:
two problems, two different fixes
Two very different problems get the same name. One needs grip. The other needs connecting. Find out which one is yours.
How do you keep a mattress from sliding?
Put a non-slip pad or a rubber gripper between the mattress and its base. That fixes most sliding mattresses. First check which of two problems you have, because the fixes are opposites:
- One mattress slipping on its base is a grip problem. Add friction underneath: a non-slip pad, rubber shelf liner, or retainer bars and slide stoppers at the foot end.
- Two mattresses drifting apart is a connection problem. Grip will not hold them, because nothing joins one mattress to the other. They have to be strapped together.
The Bedbinder solves the second one. If yours is the first, the fixes further down cost a few dollars, and we do not sell any of them.
How do I tell which problem I have?
Count the mattresses on the bed. One mattress on the move needs grip. Two mattresses with a seam between them need a connection.
One mattress keeps sliding
It creeps toward the foot end or off the side of the frame. Start with a pad under it, or a bar at the foot end.
Non-slip mattress padsMattress retainer bars
Two mattresses drift apart
A gap opens down the middle, on a split king or two twins side by side. They have to be joined, not held down.
The mattress connectorTwo twin beds into a king
Why does a mattress slide in the first place?
Nothing bolts a mattress down. It stays put on friction and its own weight, and modern beds give it very little of the first.
A mattress that travels toward the foot of the bed also opens a space at the top, which is why a headboard gap so often turns out to be the same problem seen from the other end.
- Metal frames, painted slats and platform beds have smooth surfaces. There is almost nothing for the mattress to hold on to.
- Every time you get in, turn over or sit on the edge, you push the mattress sideways a fraction.
- Nothing pushes it back. Those fractions add up, so by the weekend it has visibly moved.
- Foam and latex mattresses are lighter than old spring ones, so there is less weight holding them down.
That is why straightening it up never lasts. The cause is still there when you get into bed that night.
Which of the two problems do you have?
Knowing how to keep a mattress from sliding starts here. Look at your bed in the morning, before you straighten anything. What you see tells you which fix to buy.
The mattress has crept down or off the frame
One mattress, sitting crooked, usually shifted toward the foot end or hanging over one side. You may see bare slats or frame at the top. This is a grip problem, and the section below is for you.
A gap has opened down the middle
Two mattresses, most often a split king or two twins pushed together, with a seam that gets wider. Customers call it the canyon, the crack, the gap. This is a connection problem, and grip will not fix it.
Not sure? The test is whether there is one mattress or two. Grip holds a mattress to the bed. It does nothing to hold a mattress to another mattress.
One mattress slipping on its base
This is the cheap problem to solve, and none of the answers are ours.
The two products people reach for here have their own pages: non-slip mattress pads and retainer bars, with what each costs and where it stops working.
What works
- A non-slip pad or rubber shelf liner. Lay it between the mattress and the base. It is the first thing to try on a metal frame, slats or a box spring, and usually the last thing you need.
- Retainer bars, brackets or slide stoppers at the foot end. The standard fix on an adjustable base, and worth it if your frame has no rail down there.
- Check the frame itself. A bent slat, a missing centre support or a frame that is wider than the mattress lets it walk. Fixing that can be the whole answer.
- Velcro strips hold on a fabric-covered base. They peel off painted slats within weeks, so treat them as a temporary fix.
What does not work
- Pushing it straight every morning. You already know how long that lasts.
- An old sheet or towel underneath. The fabric slides on the frame just as easily as the mattress did.
Which fix fits your bed base
Box spring. The fabric top lets the mattress creep toward the foot end. A non-slip pad between the two fixes most cases. Velcro strips grip well on fabric too.
Platform bed or slats. Smooth wood gives the mattress little to hold on to. Cut a non-slip pad to size. A rail or stopper at the foot end stops the last bit of creep.
Metal frame. The slipperiest base of all. Rubber shelf liner over the whole frame adds the most grip. Also check the frame is not wider than the mattress.
Adjustable base. Every time the head end lifts, the mattress is pushed toward the foot end. Retainer bars are made for exactly this. More in mattress sliding on an adjustable bed.
Divan. A divan top is fabric, just like a box spring. A non-slip pad or velcro strips keep the mattress in place.
Is it the topper that slides? That is a different fix, with its own page: how to stop a mattress topper sliding.
If this is your problem, buy the pad and stop reading. We would rather you fixed it for the price of a coffee than bought something you do not need.
Two mattresses drifting apart
Here the grip fixes run out, because the mattresses are not sliding off the bed. They are sliding away from each other.
What people try first, and why it gives way
- Pushing them back together. Holds until someone gets into bed.
- A foam wedge. It fills the gap without joining anything. One customer who tried one first put it plainly: it kept slipping down into the gap.
- Frame connector brackets. They bolt the two frames together. The mattresses on top still drift, and the gap opens right above the bracket.
- Non-slip pads. More grip on the base does not stop two mattresses parting in the middle.
What holds
- One wide strap running under both mattresses, pulled snug, so they behave as a single surface. With no seam free to open, there is no gap to come back to.
That kind of product is called a mattress connector, and they are not all built the same. That is what the Bedbinder Deluxe does. An 80 cm band, three buckles, pulled snug rather than tight. Under a mattress pad or fitted sheet you do not notice it is there.
The honest limit: it fits beds where only the head end adjusts. If the head and the foot of each side both move, Bedbinder Deluxe is not recommended.
Want to see what connecting two mattresses looks like?
Lay it across the middle, pull the straps underneath, click the buckles. About 60 seconds, no tools.
4.1/5 from 3,765 reviews · more than 250,000 sold
What happened to the people whose mattresses kept moving
Three American customers, all with two mattresses that would not stay together.
It's great!
“I was tired of my split king mattress constantly sliding apart creating a canyon between the two mattresses. This has done the trick and i don't even feel it at night.”
About time.
“We had trouble keeping the mattress from moving, and the other products like this wrapped around the edge of the bed, so whenever my wife lifted her side it would come off. This is in the middle and wraps under the bed.”
Questions people ask about a sliding mattress
Including the ones where the answer is not our product.
How do you keep a mattress from sliding?
It depends on the problem. One mattress slipping on its base needs grip: a non-slip pad, rubber shelf liner or a retainer bar. Two mattresses drifting apart need a connection, and grip can't fix that.
What can I put under a mattress to stop it sliding?
A non-slip pad or rubber shelf liner between the mattress and the base. It costs a few dollars and is the right first try on a metal frame, box spring or slats.
How do I stop a mattress sliding on a metal bed frame?
Lay rubber shelf liner or a non-slip pad over the frame. Metal frames are smooth and painted, so the mattress has nothing to grip; the liner gives that grip back.
Do mattress retainer bars work?
Yes, for one mattress creeping toward the foot of the bed. They don't help two mattresses opening a gap in the middle, because a bar at the foot doesn't join them.
Can you use velcro to stop a mattress from sliding?
Yes, for one mattress on a fabric base like a box spring: one strip on the base, one on the mattress. On painted slats or metal the adhesive lets go, so use a non-slip pad.
Do mattresses slip on platform beds?
Yes, often. Smooth wooden slats give little friction, and many platform beds have no rail at the foot end. A non-slip pad cut to the size of the mattress is the usual fix.
Do mattress grippers work?
Yes, for one mattress on its base: a rubber gripper adds the friction the base is missing. Grippers don't stop two mattresses drifting apart, because they don't join one to the other.
Why do my two mattresses keep sliding apart?
Because nothing connects them. Every time you get in or turn over, you push them a little further apart, and nothing pulls them back. Bedbinder Deluxe holds them together, so the gap stays closed.
Does a foam wedge stop mattresses sliding apart?
No. A wedge fills the gap, it does not connect the mattresses. Customers who tried one tell us the same thing: it slips down into the gap and the mattresses keep moving underneath it.
How do you keep a mattress topper from sliding?
A non-slip pad underneath or a deep fitted sheet over both usually settles it. On two mattresses there's a second cause: the topper is pulled into the seam as they drift apart.
Will I feel the strap under the mattress?
Under a mattress pad or a fitted sheet, customers describe it as something you do not notice. Without a layer over the top you may feel the strap slightly.
How long does it take to fit?
About 60 seconds. Lay Bedbinder Deluxe across the middle of the bed, pull the three straps under both mattresses, click the buckles and tighten to light tension. No tools needed.
Do I still need it if my mattresses are heavy and don't move?
No, not if they don't move and you feel no gap. If you want to be sure the gap never comes back, see the Bedbinder as prevention.
Does it really stop two mattresses from sliding apart?
Yes. The gap comes from the mattresses sliding apart. Bedbinder Deluxe holds them together with three straps under both mattresses, so they can't drift and the gap can't open.
My mattresses keep sliding apart, what can I do?
Hold them together. Bedbinder Deluxe runs three straps under both mattresses, so they can't slide apart. Pads and wedges don't stop two mattresses drifting.
How do I stop my mattress sliding off the box spring?
A non-slip pad or rubber shelf liner between the mattress and the box spring. It adds the grip the smooth fabric is missing.
Why does the gap between my mattresses keep coming back?
Because the mattresses slide apart every time you move. Filling the gap doesn't stop that; holding them together with Bedbinder Deluxe does.
Why does my mattress keep sliding away from the wall?
Because nothing holds it on the base. Every time you sit on the edge or turn over, you push it a little, and a smooth base lets it go. A non-slip pad underneath adds the grip that stops it.
Why does my mattress move at night when I sleep?
Because you push it every time you turn over, and the base gives it little grip. One mattress moving needs grip underneath, like a non-slip pad. Two mattresses moving apart need to be held together.
Why is my mattress sliding off the frame?
The frame is too smooth, or has no rail at the foot end, so each movement pushes the mattress further. A non-slip pad, or a retainer bar at the foot end, keeps it in place.
If yours is the two-mattress problem
Three guides that go further than this one.
Best gap filler for an adjustable split king
Three options ranked on a moving frame: strap connector, foam wedge and mattress topper.
Read moreAdjustable beds and the gap
Wedges, toppers and connectors compared for adjustable setups, with the limits spelled out.
Read moreFitting one in 60 seconds
The whole install on video, and the same three steps in photos.
Read more
How many more mornings do you want to start by straightening the bed?
If your two mattresses will not stay together, this is the fix. Fitted in 60 seconds, no tools.
90 nights to try it when you order on bedbinderdeluxe.com. On Amazon, their 30-day return window applies.