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How To Get A Memory Foam Mattress To Expand?

Ashton Roberts

November 14, 2023

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To get a memory foam mattress to expand, you should remove it from the packaging, lay it flat on your bed frame or foundation, and allow it enough time to take shape and reach its full size. This process can generally take 24 to 48 hours, but it might vary depending on the product and environmental conditions. For the best results, maintain a room temperature around 68°F to 72°F (20°C to 22°C), as memory foam expands faster in a warmer environment.

Initial Steps for Expansion

When your memory foam mattress arrives, it’s usually compressed, vacuum-sealed in plastic, and rolled into a box, which makes it easier to ship and handle. The first step in the expansion process is taking your mattress out of the box. It’s recommended to do this in the room where you plan to use the mattress to avoid having to move it again once it has started to expand.

Unboxing Your Mattress

Carefully open the box and remove the rolled mattress. Place it on the bed frame or foundation before cutting away the plastic wrap. Be cautious not to use sharp objects that could accidentally damage the mattress. Once you remove the plastic, the mattress will immediately start to decompress.

Time to Expand

Give your memory foam mattress time as it starts to take on air and expand to its full size. While many mattresses expand within a few hours, full expansion might take longer. It’s best not to judge the comfort or support of your mattress until it has had sufficient time to fully expand.

Factors That Affect Expansion Time

Several factors can influence how long it takes your memory foam mattress to expand.

Room Temperature

Memory foam reacts to temperature. A warm room will help the foam become more pliable and expand quicker. If the room is cold, the foam will be firmer and take longer to unfold and decompress. If you’re setting up your mattress in a cooler environment, you might consider using a space heater to gently warm the room, but be careful not to place it too close to the mattress.

Thickness of the Foam

The thickness and density of your memory foam mattress can also play a role in expansion time. A thicker, denser mattress may take longer because there’s more material that needs to take in air and expand.

Type of Memory Foam

Not all memory foam is created equal. Traditional memory foam can take longer to expand, especially if it’s of higher density. More modern, open-cell or gel-infused foams might expand more quickly due to their improved airflow properties.

How To Speed Up the Expansion Process

If you’re keen to get your memory foam mattress ready for a comfortable sleep, there are a few tricks you can use to accelerate the expansion process.

Rolling Out the Mattress

Gently walk across the surface of the mattress or roll it out with your hands and arms to encourage uniform expansion. This can help air to circulate through the foam more quickly and help even out any wrinkles or compressed areas.

Warm Up the Room

As mentioned, warmth is key for memory foam expansion. Try to keep the temperature in the room on the warmer side. Even increasing the heat slightly can make a difference in how the foam expands.

Provide Ventilation

Open windows or use a fan to circulate air in the room. This will not only provide fresh air but also help evaporate any potential odors that come from the new foam and assist in the expansion process.

What to Avoid During Expansion

While you’re waiting for your mattress to expand, there are some things that you should definitely avoid doing to ensure the integrity of the foam.

Don’t Sleep on It Immediately

Waiting 24 to 48 hours before using your mattress might be recommended because sleeping on it too soon could interfere with the expansion process and potentially harm the foam’s structure.

Avoid Heavy Objects

Placing heavy objects on your new mattress before it’s fully expanded might prevent it from expanding evenly. Also, avoid sitting on one part of it for prolonged periods during the initial inflation phase.

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Be Patient with Smells

New memory foam might have a noticeable smell (off-gassing). It’s not harmful, but it might be unpleasant. Don’t try to mask it with sprays or covers immediately; allow the smell to dissipate naturally with proper ventilation.

Finishing Thoughts

Getting a memory foam mattress to expand is mostly a matter of time and patience. Following the steps outlined above should help the process along, but remember that your mattress needs time to adjust to its new environment. Factors like temperature, type of foam, and thickness all play into how quickly your mattress will be ready for a restful night’s sleep. Once it’s fully expanded and any initial odors have dissipated, you can look forward to enjoying the personalized comfort and support that memory foam provides.