How to Fix a Sagging Sleeper Sofa?

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Collapsible fittings like sleeper sofas are a godsend for people who love hosting friends and family but cannot do so frequently on the grounds of their petite living spaces. Moreover, these multifunctional sofas are highly popular with college students who are primarily low on budget and cannot invest in two furnishings at once. If you happen to have any couch surfers for friends, they might go as far as to brand these couches as a giant leap for mankind owing to their built-in mattresses that spell added comfort.

But despite their myriad benefits and growing popularity, most people are not all praises for these couches because they—much like their regular counterparts—tend to sag after extended use.

Now, if your guests, or you yourself, have recently had an uncomfortable nights’ sleep because of your sinking sleeper sofa, fret not! Our upcoming fix will ensure that your sofa goes back to being the star attraction at your sleepovers and does not cause you any further embarrassment or discomfort—in 10 steps or less.

Before you can get down to business, here are some of the tools and materials that you will need to first disassemble the sofa and then get the job done.

Things You Will Need

You might have noticed that your bed frame is to blame for the sinking fiasco; therefore, this fix aims at elevating the bed frame with the help of some plywood. Besides plywood, you will also require:

  • A power drill.
  • A circular saw.
  • Chalk.
  • Bootlace or wire.
  • Wire cutters.

How to Fix a Sagging Sleeper Sofa Under 10 Steps

Step 1

This step is a no-brainer but begin by removing any throw pillows or blankets and the sofa cushions.

Step 2

Next, pull out the bed and remove or unfasten the mattress to reveal the bed frame. Once the bed frame is in view, you need to measure it.

Step 3

Using chalk, trace the measurements onto a piece of plywood and cut it into three equal parts with the circular saw.

You can gauge if you have the correct measurements by placing the first piece over the bed frame. If it is a perfect fit, then you are on the right track. If not, then it is back to square one for you.

Step 4

You need to drill equally-spaced holes into the sides of two of the pieces so that they can be fastened to the middle piece on either side.

In simpler terms, drill holes into the right edge of one of the segments and the left edge of the other.

Step 5

Drill holes corresponding to the other two pieces on both sides of the remaining middle segment.

Step 6

Connect all three segments using bootlace, allowing enough give for these pieces to fold over easily. You can use wire in place of bootlace, but remember to trim the ends that stick out to avoid any injuries.

Step 7

Place this contraption atop your bed frame to see if it requires any adjustments.

Step 8

Put the mattress over the plywood platform and lie down on it to enjoy the fruit of your labor.

Step 9

Put your contraption aside and brandish it every time you need to use your sofa. To avoid freaking your guests out, it is better to do the necessary placements before they can take a peek and make sure to check if all parts of the sofa are strengthened and perfectly fixed.

As promised above, you now have a raised bed in less than ten steps. Just to make this read more promising, we also bring you three tips that will lengthen your sleeper sofa’s lifetime.

Additional Tips

  1. Do not place your sleeper sofa in direct sunlight if you want the upholstery to retain its color and shine. Sunlight will cause the fabric colors to fade and make your sofa appear lackluster.
  2. We know it is hard to resist, but avoid sitting or standing on the arms and back of the sofa. These parts are not designed to sustain extra weight and can break easily.
  3. Kids love using sleeper sofas as trampolines, but this naturally causes the bed frame to cave in. In order to prevent any damages to the sofa and the kids, implement a strict no-jumping rule.


How much plywood will I require for a normal-sized couch?

We recommend buying ½-inch plywood. It will be enough for what you are setting out to do and is not too heavy on the pocket either. It will cost you only around $7-15 if it is cheap and can go up to at least $60 if it is first-rate.

Where can I find good plywood?

Your local hardware store should have good quality plywood. If you are afraid of buying the wrong kind, just be sure to check the edges. Good plywood has uniform edges and has no voids whatsoever.

Will I need a handyperson for this project?

If you are not good with tools and have never built furniture before, we advise you to call someone over to help. Plywood can be challenging to maneuver and, therefore, could use all the help you can get.

What can I use instead of wire and bootlace?

If you do not have any of these, then your next best option is rope. However, since the rope is a little thicker than the other two alternatives, it might give you trouble when it comes to slack or flexibility.


We understand that not everybody has enough bucks to change couches that often, but sometimes a replacement is long due. Although our hack will provide temporary relief, in the long run, it may be bad for your back. Thus, if it will not break your bank, you should purchase a new couch. As for the old one, we can guarantee that it will fetch a great price at a yard sale or a second-hand store.

However, if you would like to hold on to your beloved sleeper sofa, then remember to measure and build correctly so as to conserve money and time.

Lastly, we would like to wish you luck on your building or buying—whatever floats your boat—endeavors.

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