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How to Fix a Dipping or Sagging Memory Foam Mattress – The Bedding Planet

How to Fix a Dipping or Sagging Memory Foam Mattress

A dipping or sagging memory foam mattress is always a cause of aching back and chronic body pains. Find out what and how you can solve such a problem when it hits your memory foam mattress.

So, your memory foam mattress has been sagging or dipping lately and interfering with your sleep. There is a pretty good chance that is why you are here looking at how to fix it and get that comfortable memory foam mattress back. However, though, the memory foam mattresses will not always last along with your plan.

With time, models tend to dip and sag in different places, and you will get the feeling of a valley while trying to sleep. The sleeping position will often be strange, and you will try your best even to compensate with a pillow. Nonetheless, good support is no longer there, and you will have to wake up feeling pain or being tired in the morning.

Fortunately, how to fix a dipping or sagging memory foam mattress is not a task overly complex. In particular, this is thanks to the variety of options to remedy the problem at hand.

But fixing a dip or sag in your memory foam mattress takes knowing the reasons for the trench responsible for your neck and back pains. Here is a look at the leading reasons as to why your memory foam mattress keeps sinking or sagging.

If you are interested in checking out the best rated memory foam mattresses currently available on the market, you can do so on Amazon here.

Why Does a Memory Foam Mattress Dip or Sag in the First Place?

You may first notice memory foam body impressions once your mattress starts to sag. Believe me. You are not alone, and it would seem that as sleepers, we also are responsible for such a scenario. While we can’t go into the how’s, let us check out the why’s responsible for the matter.

1. Extra Weight

A memory foam mattress can withstand adequate weight, especially for models having 10-12 inches of thickness. Such models boast of having high-density foam inside that deters sag throughout the mattress. That ensures the foam mattress is supportive enough for the end-users.

However, foam mattresses thinner than this cannot withstand more than the weight or pressure they can handle. In particular, sharing a bed with a pet or partner will have you both sinking into the memory foam mattress in little time. Of course, this concludes that with more weight and pressure, the quicker dips or sags will foam.

2. No Proper Mattress Foundation


A proper mattress foundation also makes the difference in whether your foam mattresses get indents or sags. Here, a compatible foundation or bed frame will ensure that the memory foam mattress gets to conform and cushions in place.

This prevents incidents of mattress edge collapse or sinking in your foundation while offering the best support from the start.

3. No Core Support

Next to a wrong foundation is a lack of proper core support or none at all. In this case, high-quality mattresses may have the advantage of coming with a sort of support core within the base. However, it’s not always the case with all memory foam mattresses.

Some come with a poor support core, which sinks due to the uneven surface present. You will often notice the dips in areas where you rest while the edge remains intact.

4. Overdue Use

 In time, your memory foam mattress may outlive its use regularly and start to sag or dip. As such, you should always consider that your memory foam mattress will go past its due date after extensive use.

For this, we recommend that you always check with your manufacturer beforehand. In general, the lifespan and warranty are most important in considering how long it will last till it starts to dip.

5. Lack of Proper Care

While old age can damage your memory foam mattress, lack of proper care also plays a hand. For instance, consider that if you don’t vacuum or spot-clean your mattress often, it will damage your memory foam in the long run. Take, for example, spills, which if left unattended will have moisture forming, making it wet enough to dip or sag under pressure.

How to Fix a Sagging Memory Foam Mattress

By now, you may be aware of the reasons behind your dipping or sagging memory foam mattress. Is it the extra weight from your pug? Kids? Or is it an old memory foam mattress looking to call it quits?

Whatever the case, the following fixes will empower you to get your foam mattress back in shape and preserve it in the long run. Here are the options to try out for fixing a dipping or sagging memory foam mattress.

1. Rotate and Flip Your Memory Foam Mattress

Rotating or flipping your memory foam mattress remains one of the oldest tricks in the book on how to fix a dipping or sagging mattress. Every month, it is wise to flip the foam mattress to achieve evenness throughout while preventing sagging in an area.

On the other hand, rotating is also another option to try out when looking to maintain proper wear all-around the mattress. It’s simple with the rotating involving the head and foot of the mattress.

2. Get A Foam Mattress Topper

Adding a mattress topper is the next best thing to solving how to fix a dipping or sagging memory foam. On paper, a topper won’t fix the sagging permanently, but it does address the leading reasons for the sag.

Depending on your type, memory foam toppers come in different forms to match the preferences in place. You have the option of picking between a latex, memory foam, polyester, or wool toppers short-term fix for the saggy foam mattress.

3. Invest in a Firmer Foam Mattress


Rather than involve a lot of underlying support weight, it would help to consider buying a firmer memory foam mattress. With a firmer foam mattress, you are less likely to experience sagging or dipping since it’s high-density foam.

Also, consider that a firmer foam mattress of 10-12 inches or more can withstand considerable weight or pressure for a longer time. This gives you the warranty of having a memory foam mattress with the right type of reinforcement layer to create that “buffer”

4. Improve the Bed Foundation

Since the bed frame and foundation is responsible for the issue of sagging, it only makes sense to improve on it. The best fix here is to add a support base that will prevent sinking in the middle of your memory foam mattress.

You can opt to use a cardboard or plywood base to ensure the concave mattress design stops from forming in the short term. While it may not be a long term solution, it helps patch the overall area experiencing the sinking.

5. Get A Mattress Helper

Lastly, another alternative would be to invest in a mattress helper to help fix any potential sag from the bottom. With a mattress helper, you get to place one under your mattress to increase the base layer and consequently increase the foam’s lifespan.

However, mattress helpers are not the most affordable choice, but they get the job done in making the bed feel normal. If you can, try to consider them if you wish to get more out of your memory foam mattress in the long run.

6. Filling It

Similar to a mattress helper, filling your memory foam mattress works to remove sharp dips and sagging. But filling works a bit differently with the scenario calling one to use a memory foam piece small enough to fit the sagging area. All that is necessary is to place the mattress pad and fit it tightly on top of the dip.

How to Prevent Your Memory Foam Mattress From Dipping or Sagging

Inevitably, you will have to learn to prevent your memory foam mattress from dipping or sagging beforehand.

Here, you will employ long term solutions which will help maintain your memory foam mattress condition and prevent potential sagging or dipping. Some of the DIY methods you should try include:

1. Rotating and flipping your mattress

Occasionally doing this helps ensure your memory foam mattress is even, and no weight or pressure is in one area.

2. Using a topper

With a mattress topper from the start, you get to create a buffer zone, which creates a supportive foundation to prevent sagging.

3. Get support

At the start, having a proper bed foundation comes in handy when looking to prevent dipping or sagging from the first day. Remember, your memory foam mattress will only last longer with a strong foundation such as a flat, solid surface like a flat platform bed.

4. Get a better mattress

Only a better mattress will have you worrying less about how to fix a dipping or sagging memory foam mattress in the first place. Taking the time to invest in a firmer mattress gets you the advantage of a longer lifespan plus a warranty against dipping or sagging depending on the manufacturer. Just be sure to check if the memory foam mattress meets your requirements against dipping and sagging.

Rather than experience body aches and pains, try out these tips with your dipping or sagging memory foam mattress. Whatever the option, be sure that you are on your way to getting back the support you once had before. So get out there and try them out to fix your memory foam and sleep more comfortably.

If you are interested in checking out the best rated memory foam mattresses currently available on the market, you can do so on Amazon here.

Niklas Lampi

My name is Niklas and I'm the author and content operator at The Bedding Planet. I've always had a big interest in bedding and more specifically sleep. If I find something that makes me sleep better, whether that's a lifestyle change or a better bedding environment, I'm ready to share it with the world!

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