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How To Make Memory Foam Mattress Expand Faster?

Memory foam can bring to mind a relaxing, cloud-like sleep. This type of bed is very popular as it helps with sleep disorders due to its excellent structure. You may find that the mattress does not expand to your expectations.

So, how to make your memory foam mattress expand faster? Let’s look at this article to discover the potential causes and get some helpful tricks. Scroll down!

How To Make Memory Foam Mattress Expand Faster? (4 Easy Steps)

You can make your memory foam mattress expand faster by following these detailed steps:

Ways to encourage mattresses to expand

Step 1: Put The Foam Mattress On A Flat Floor

You’ll be able to begin the expansion process sooner if you unbox it as soon as possible. Keeping a bed in a box for a lengthy period may cause it to take longer to recover. If you cannot open it right away, you should perform this task within 72 hours of getting it.

If your bed has a box spring or bed frame, this surface will not even be enough for the foam. You should place it on a flat floor within 24 hours.

After that, set it flat on the ground and make sure it unfolds. In this way, the expansion process will automatically start. If you maintain it flat, it will be more exposed to air and expand fast and evenly in all foam mattress corners.

Step 2. Adjust The Temperature In Your Room

Memory foam is heat sensitive. Warm temperatures encourage expansion, while cooler temperatures can cause constriction. Warm up the area where you plan to place your memory foam bed if it doesn’t expand completely.

You can increase the fluidity of the product by increasing the air pockets’ flexibility and softness.

You may need a heater if your home is cold or if you buy modern memory foam beds in the winter months. It is not recommended to place your heater next to the mattress because different goods react differently .

It is important to note that the ideal temperature for room expansion should not be below 68 degrees Fahrenheit or above 75 degrees Fahrenheit. You can also check the mattress’ manufacturer’s specifications for how much heat it can handle.

Read more: Linenspa Mattress Review

Warmth encourages expansion

Step 3: Roll It On

Movement can also affect the expansion of your mattress. This will allow it to expand more quickly. Mild movement during the first thirty minutes of unpacking will help to encourage the opening of microscopic pockets, which speeds up the process.

Remember that your body heat will contribute to the expansion of memory foam mattresses. So, change positions often to let it expand as much as you can.

The mattress corners can be flatter and harder than the middle part.

Standing on your mattress to generate body heat is not recommended, as this will result in notches and deep recesses on your product.

Step 4: Offer It More Air Circulation

Foam mattresses require enough air flow to allow them to spread more quickly. This reduces the time it takes to wait. Fans are a popular option as they provide air movement and ventilation.

Use a fan heater for both heating and air circulation. Avoid damaging your mattress by not placing the fan heater close enough to it.

Steamers are another great way to improve air circulation. You can use it to increase the heat of your mattress while also increasing air circulation.

Read more: Best Daybed Mattresses

How Long Does A Memory Foam Expand Fully?

It takes a memory-foam bed around 24 hours to fully expand. After removing the product from the box (which pushes air out of it during compression), you can begin to load the open-cell composition.

As air fills this product structure, its viscoelasticity enables it to return to its previous shape.

Time for the mattress to expand

Even so, you should be aware that the time for your mattress to expand may vary, depending on the different types. Besides, there are some primary factors involved in expansion time, as shown below:

  • Temperature: These products are temperature sensitive. In a hotter environment, any mattress topper expands more quickly. Heat lowers a material’s stiffness and enhances its fluidity, making it simpler to shape.
  • Thickness: The memory foam mattress thickness likewise impacts their expansion time. Thin products will take less time to inflate compared to thick ones. If you have thick foam layers, you might consider cutting them.
  • Density: Memory foam comes in a variety of densities from various manufacturers. The expansion of a denser foam takes longer. The density of a foam determines how stiff it is.

Why Is Memory Foam Mattress Not Expanding?

New memory foam mattress

Before you can fix the problem, you should first determine what’s causing your mattress to not expand properly. Here’s a list of some of the more common reasons why new foam mattress users experience problems:

Your Mattress Requires More Time To Expand

You may not read the instructions before using the mattress. Memory foam mattresses that don’t work properly are usually due to a lack of patience.

Do not be disappointed or upset if you find that your mattress is squished or thin when you first open the box. It takes time for the mattress to grow as large as you expected.

A mattress can take up to 24 hours for to increase its size. This does not mean that the mattress is faulty, however, if it still looks flat after 24 hours.

This is not unusual. It should be inflated within 72 hours.

You Leave It In The Box For A Long Time

Foam pockets can form if you leave the mattress in the box longer than normal. This will slow down the memory foam’s expansion. These foam pockets make the mattress harder and trap fibres within. The mattress cannot expand fully.

You Put It In Improper Ambient Temperature

Another factor is the environment’s temperature; it is unsuitable for a memory foam mattress. The purpose of a foam mattress is to absorb heat and conform to your body.

Your fresh one likely hasn’t received enough heat to heat up yet. You must thus make sure that your environment is sufficiently heated.

It is preferable to move your room to a warmer environment if it is too chilly so that it can capture the heat needed to become cosy.

Cheaper mattresses

The Room You Put It In Is Too Humid

Another reason a memory foam mattress doesn’t grow is that the air you breathe in is damp. It is very porous, but it won’t be able to soak up much moisture.

So, the best thing to do is to make your home or the area where you lay the mattress less wet.

There are several ways to lower the dampness level. One option is to set your air conditioner to “dry mode.” Another great idea is to use an air filter.

It Is The Manufacturer’s Fault

You can only contact the manufacturer to return or exchange your mattress if none of the above factors apply to you.

If you purchased the mattress many years ago, but only recently used it, the warranty is likely to be void. Check the warranty right away when you take it out of the package. If it breaks, you can get it repaired or replaced immediately.

Call the customer service of the manufacturer to find out what other options are available. If your mattress topper has reached the end, you’ll have to replace it.

Improper expansion

Read more: Best Mattress Without Memory Foam


This article has ultimately got to the end of your question. Overall, it would be best if you unboxed it right away after purchasing, placed it on a flat surface, and provided more warmth and air circulation to promote expansion times.


Can I Sleep On A Memory Foam Mattress While It’s Expanding?

The answer is yes. You can sleep or roll on the memory foam mattress even if it doesn’t fully expand. Your body temperature is a good way to speed up expansion time.

Does Heat Help Memory Foam Mattresses Expand?

Yes. The memory foam mattress is heat sensitive, which means it responds well to the warmth to expand faster. That’s why fan heaters are useful for full expansion.

Why Is My Memory Foam Mattress So Hard?

The culprit may be the cool temperature. When the product gets cool, it will become harder and less elastic. Remember to bring heat to your room if you have unexpanded foam.

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David Elkie

David Elkie

David Elkie is the CEO at Banner Mattress. He has been in the writing and editing business for the mattress, bedding accessories and décor industries for over 20 years.