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Best 10’s Verdict
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Pros
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Cons
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Related Primary Content:
You have a few options if your existing foam mattress hasn't fully expanded.
Mattresses packed in a box sometimes don't fully expand after unpacking because of foam pockets.
You may have bought a defective mattress, or your room may be too cold for your brand-new mattress to grow.
Most mattresses need 24 to 72 hours to expand fully.
Premium brands such as Saatva Classic and Loom and Leaf don't ship to your home in a box, so you'll experience no expansion issues with them. They also happen to be our #1 recommended brand available in the US.
Related Secondary Content:
How Long Does It Take A Memory Foam Mattress To Expand Fully?
It usually takes 24 hours for memory foam mattresses to swell.
Sometimes mattresses take 72 hours to expand fully.
You might have to wait longer if your mattress is too thick or dense, or if your room is too cold.
Memory foam mattresses are compressed differently by different manufacturers, so they respond differently.
Mattress maintenance is a must, especially when it comes to memory foam. Memory foam expands after at least 24 hours.
If you want to see if a memory foam mattress expands, place it on the floor for 72 hours.
7 Reasons Why Memory Foam Mattress Is Not Expanding
There are 7 reasons why your memory foam mattress is not expanding:
1. Foam pockets: The most common reason bed-in-a-box memory foam mattresses don't fully expand after unboxing.
2. You haven't given it enough time: Most memory foam mattresses expand fully within 24-72 hours.
3. Cold room temperature: Memory foam mattresses do not grow when the room is too cold.
4. The mattress is too firm and thick: It grows slowly, pauses, and leaves you frustrated.
5. The mattress was compressed for an extended period.
6. You didn't remove it from the box quickly enough.
7. You bought a defective mattress.
6 Solutions For Mattress Not Expanding
Here are 6 solutions to a mattress that doesn't expand:
1. Be patient: It shouldn't take more than 7 hours for your memory foam mattress to expand fully, but it can take up to 72 hours in rare cases.
2. Increase the room temperature: Foam responds to temperature, so set the room temperature to at least 20°C (68°F).
3. Put it on a flat surface (such as the floor): To ensure your memory foam mattress has a flat, stable surface, let it expand on the floor for 24 hours before you return it to the frame.
4. Walk or roll on the mattress: Rolling on the mattress for between 10 and 30 minutes may cause the memory foam to soften, allowing the mattress to expand.
5. Improve air circulation: Ventilation can aid in the mattress topper's expansion and reduce off-gassing.
6. Establish a solid foundation (mattresses need a flat and solid surface to properly expand.
#1 Solution For Mattress Not Expanding
It's smart to buy a sturdy, high-quality mattress like Loom and Leaf.
It's made with breathable gel-infused foam to keep you cool all night.
It's not guaranteed that a more expensive memory foam mattress won't have expansion issues. Keep in mind that cheaper memory foam mattresses can be more easily damaged if they're compressed for too long.
Why Is My Memory Foam Mattress Not Fully Expanding?
If you're wondering why your memory foam mattress isn't fully expanding, there could be a few reasons. Firstly, many memory foam mattresses are vacuum-sealed for shipping which can cause them to take some time to fully expand. It's recommended to give it at least 24 hours to fully inflate.
Another reason could be the room temperature. Memory foam mattresses tend to expand more slowly in colder temperatures, so if your room is on the cooler side, it may take longer for your mattress to reach its full size.
Finally, make sure you're not putting any weight on the mattress while it's expanding. This can cause it to compress and not fully reach its intended size.
Different brands and types of memory foam mattresses may have different expansion times and instructions, so always refer to the manufacturer's guidelines. If you've followed the instructions and are still having issues, contact the manufacturer for assistance.