How to Make a Mattress More Firm?

Sleep is essential for your health. You may experience sleep problems due to an uncomfortable mattress.

A study revealed that using a medium-firm mattress can help enhance sleep quality and reduce back pain for average-sized sleepers. Do you feel stuck or sink in your bed?

If yes, you may need to firm it up. In this post, we will guide you on How to Make a Mattress More Firm.

How to Make a Mattress More Firm?

You may need a firmer bed if you wake up with pains or get stuck in your mattress. The following are some tips on how to make your mattress firmer.

1. Change the Box Spring

Keep in mind that box springs can wear out over time. If your mattress feels too soft, your old box spring can be the culprit.

If the box spring is worn-out, it can’t offer enough support, keeping it feeling softer. Purchasing a new box spring is more affordable than buying a new mattress.

2. Make It Air Dry

Your mattress can absorb moisture through the air, which softens it. If you reside in a humid region, your bed may retain water. 

You can dry it out in the sun to remove the accumulated moisture. Sun-drying can make your mattress firmer. 

The sun’s rays can also kill viruses, bacteria, allergens, mildew, and germs trapped in your mattress. 

3. Use Plywood Board

You can use a plywood board to improve support at the bottom of the bed. You can boost the firmness of your mattress by putting a plywood board on the slats or top of the box spring. 

Aside from strengthening your mattress, the board can also keep allergens and dust at bay. 

4. Get a Firm Mattress Topper

You can use a firm mattress topper to firm your bed if you want a practical method. Usually, toppers are made with memory foam or latex, which is famous for being supportive and responsive. 

5. Rotate the Mattress

Over time, mattresses start to sag depending on their quality. These sags, also called soft spots, can make you feel trapped or stuck in the bed.

You can prevent this by rotating your mattress every 3 to 6 months. So, you can make sure that the weight is evenly distributed. 

6. Reset the Thermostat

Another way to make your mattress firmer is to reset the thermostat. Some mattresses, including memory foam, are temperature sensitive. 

It may absorb heat and softens. On the other hand, a mattress in a colder room can be firmer. 

You can open the window or fan or reduce your room temperature to keep your mattress firmer.

7. Swap for a Firmer Mattress

You can see if the mattress comes with a sleep trial. You can exchange it for a firmer mattress if you have a softer mattress. 

8. Keep the Bedding Flat

If you want a quick method to make your mattress firmer, pull the bedding tight to the corners of the bed. The additional pressure can make it more supportive. 

You can keep your mattress firm by tightly pulling the sheets across your bed each morning. 

9. Invest in New Slats or Bed Frame

If there are broken or displaced slats, it can impact the firmness of your mattress. You can invest in new slats or bed frames to achieve the right firmness of your bed. 

A new bed frame with slats can provide more support. You can prefer bed frames with solid slats for a more supportive feel. 

10. Move Your Mattress to the Floor

You can also put your mattress on the floor to make it firmer. Meanwhile, remember that you will be exposed to bugs, dirt, and dust, which may get to your mattress. 

What Is the Advantage of a Firm Mattress?

With regular use, your mattress becomes softer and lacks enough support. Even though some softness is expected, it needs to be balanced with enough firmness for comfort. 

A firm mattress is beneficial if you are recovering from a back injury or have back pain. The mattress can offer lumbar support. 

The firm bed doesn’t compress with your weight. It can relieve pressure on your lower back while giving support. 

A soft to medium mattress is generally ideal for side sleepers based on your weight. Side-sleeping is a healthy position since it reduces acid reflux and promotes heart health. 

Is a Firm Mattress for Everyone?

Everyone requires a mattress with the right balance of firmness and plushness that suits their sleeping position and body type. An excellent quality mattress is recommended for those who suffer from back pain, plus-size sleepers, or those healing from a back injury.

Finding the Best Firmness Level for You

Firmness is relative; what is firm for you may not be firm for others. So, you should find the best firmness level for you to have a sound sleep.

1. Petite Sleepers

If your weight is less than 130 pounds, you can use a soft or medium-soft mattress. 

2. Plus-Size Sleepers

Plus-size sleepers have over 230 pounds weight. A firm bed can offer optimal comfort. 

These sleepers can still feel supported and lifted on a firm mattress, as their weight compresses the bed for a more cushioned feel. 

3. Average Weight Sleepers

The weight of average sleepers is about 130 to 230 pounds. The recommended bed for these sleepers is a medium or a medium-firm mattress.  

Why Is the Firmness of the Mattress Important?

The firmness of your mattress is crucial to getting restful sleep. It is essential as the mattress’ thickness. 

A too-soft mattress can curve your spine and body to sink, leading to poor sleep quality and discomfort. On the other side, a too firm mattress causes pain and stiffness in the back, neck, and joints. 

You should get the right firmness for you. 

Related: How Firm Should My Mattress Be?


If you have a too-soft mattress, you don’t need to buy a new one. As we mentioned above, there are several ways to make your mattress firmer. 

By making your bed firmer, you can improve the quality of your sleep. You can also enhance alignment to improve your posture.

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