How to fix a sagging mattress with plywood?


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Learning How to fix a sagging mattress with plywood? It is straightforward because all you have to do is set it on your door frame. This technique, which you’re probably already familiar with as a perforation fix, can also be used if your mattress starts to droop. This post will go through the benefits of plywood and the proper way to utilize it.

It would be best if you also recognized that this repair has disadvantages. Even though there are a few things to keep in mind while repairing a sagging mattress in this manner, please find the detailed instructions on using plywood to fix a sinking mattress without any more hesitation. That is why in this article, we have decided to talk about How to fix a sagging mattress with plywood?

Also read How to Fix a Sagging Mattress?

How to Use Plywood to Fix a Sagging Mattress?

Plywood is possibly the simplest way to remedy a sinking mattress out of all the options. If you give it some thought, one of the causes of mattress sagging is a bed frame that provides inadequate support. You can strengthen the bed frame’s framework and prevent the mattress from sliding by laying a layer of plywood on the slats.

The extra support under the mattress is a short but effective repair. To fix the mattress, all you need to do is use plywood that is the identical size and form as the drooping area. The plywood will raise this portion to make the mattress seem more substantial and supportive.

Also read How to make a foam mattress comfortable

What to consider when using plywood to fix a sagging mattress?

As mentioned, placing plywood on the bed frame only serves as a temporary solution. This should never be your go-to option, especially if the mattress hole is significant. Furthermore, it ought to aid you in avoiding body aches brought on by a sagging mattress’ irregular surface.

Is there anything wrong with How to fix a sagging mattress with plywood under the mattress? It seems that plywood, made of wood, is not breathable and may interfere with the mattress’s blood flow. Due to the possibility of fungi, you must be cautious around moisture and humidity levels.

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Which Type of Plywood Is Used Under a Mattress?

Many might believe you can restore your sagging mattress with any form of plywood. But for the plywood below your mattress to function, it must possess good qualities, just like the mattress topping that you install on the top of the mattress. How thick would your plywood be, to begin with?
1. Thickness.
2. Type.
3. Finish.


When sustaining a sagging mattress, the plywood’s thickness may be its most important characteristic. To ensure that the plywood will assist you in regaining the unwavering support you lost due to a sagging mattress, use a piece about 34 inches thick. The next factor to consider is the precise kind of plywood you should purchase.


Most common plywood will be acceptable as long as it is capable of supporting your body mass. Some great picks seem to be softwood plywood from the AB and BC series with a smooth texture and curved surfaces. In this manner, they will endure regular use while preventing shrapnel from unintentionally damaging the mattress.


Anyone can request the plywood edges be flattened, the finish be fine-sanded, and the varnish coated. The board could generally also be covered with stuffing and upholstered cloth. With many of these adjustments, you can be sure that the plywood will hold up well and won’t affect your mattress.

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Can You Replace a Box Spring with a Piece of Plywood?

If your mattress underpinning is sturdy enough already to keep the mattress well supported, you can remove the queen size and use a piece of plywood alternatively. Remember that a box spring’s function is to assist the mattress in receiving equal weight. Use plywood to replace the box spring since you must maintain this stability or risk snapping a spring on your mattress. Use plywood over the slots even if your mattress has never had springtime. The main idea is to assist in evenly distributing the weight on the mattress to avoid slumping or damage. Plywood or a daybed will help the mattress when you go in and out of bed because it couldn’t just be happening even when you’re lying down. Keep reading to find How fix a sagging mattress with plywood?

How Do You Fix a Sagging Mattress Using Plywood?

The best option to remedy a sagging mattress is to cover it with a piece of plywood that has been cut to fit the size of your bed. This can immediately mend the mattress or return it to its previous level of comfort. You may purchase two pieces based on the dimensions of the mattress.
If a bedframe supports your bed, you can insert the plywood between the mattress and the daybed; however, if timbers support it, you can connect the metal bars with the plywood sheets.

Here are Ways How to Fix a sagging mattress with Plywood?

Measure your bed.
Measure the sagging part of the mattress.
To level up the mattress.
Measure the sagging area.
Insert plywood to support the sagging part.
Choosing the correct type of mattress.
Determine the correct type of mattress.

Should You Sand Down Your Plywood?

Although it is not necessary, it is a good idea. Sanded smooth plywood will help to prevent your mattress from being entangled in the pointed wood. You won’t need much effort if you can accomplish this. Your mattress’s durability could benefit significantly from a bit of light scratching.


Here we will discuss the drawbacks of How fix a sagging mattress with plywood? Although applying plywood to correct sagging and firm up a mattress is a fabulous idea, there are some disadvantages. In effect, since the bottom of the mattress lies flat on the wood, there is less air transmission around this one, which raises the possibility of fungal growing somewhere at the bottom of the mattress, primarily if you reside in a scorching environment. This appears to mean that the plywood will be somewhat helpful, but until that same point, the mattress loses some of its relaxation.


Research your mattress’s guarantee when putting a plywood layer under it because doing so can invalidate it. Details and serial numbers should be on the warranty card. Most agreements clearly state that modifications to the bed’s original concept will invalidate the manufacturing warranty.

Should You Use Plywood as A Preventative Measure?

Most individuals consider “plywood” a precaution you must undertake when buying anything like a mattress. If your mattress isn’t sagging, it’s a dangerous choice. It will do a lot of long-term damage to your mattress.

There are several justifications for that:

Your mattress can’t even breathe properly if it’s made of plywood: You could consequently wind up accumulating too much moisture underneath your mattress. This might cause further issues, like the spread of germs and mold.

Your mattress’s lifetime will be shortened as a result: You might expect the fibers to tangle and snag on the floorboards with the daily movement of your bed. Plywood isn’t necessarily the smoothest material available in the end. This may cause minor holes in your mattress, which could harm the mattress’s fabric.


If you can’t get a new mattress yet, you want to solve the issue of How to fix a sagging mattress with plywood? For instance, if you understand how to quickly mend a sinking mattress with plywood, you could find it helpful. The drooping area will be raised by placing the plywood under the mattress, restoring its stiffness and stability.

So choose the appropriate width and thickness of plywood for the work to make the most effective use of this option. Additionally, it should be seamless with a circular shape to prevent damage to the mattress. In extreme circumstances, plywood can even become a futon mattress. In this article, we talked about How to fix a sagging mattress with plywood?


Q. How long should a mattress last before it starts to sag?

A. Even though mattress sagging is typical, I wouldn’t expect it to arise immediately. The durability of mattresses has improved more fabulously than ever, thanks to technological advances. A mattress can survive for seven to ten years without showing signs of sagging.

Q. Are there any types of mattresses that don’t sag?

A. A latex or memory foam mattress may be the best option for your mattress purchase if you want to reduce the chance of sagging. Most foam mattresses have a lower sagging risk, which can last up to 15 years without presenting any sagging symptoms.

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By Muhammad Asim