• The Bed Boss

Why Is My Mattress Sagging?

Updated: Oct 19

Your foundation may have something to do with it.

We get it. A sagging mattress can be a huge pain—especially if it is only a year or two old. If your mattress has developed frustrating dips, take a deep breath and slowly exhale. Before you dig out your receipt and warranty information to contact the manufacturer, take a moment to (1) consider the type of mattress you have and (2) the foundation that you have placed it on. Depending on your mattress type, the foundation can make a huge difference in your mattress' comfort and longevity.


Box Springs: You Get What You Pay For

Do you have a memory foam or hybrid mattress? If so, you should be aware that using the right foundation is vital. Foam and hybrid mattresses require a highly supportive surface to prevent sagging and other damages over time.


A cheaply-made, “get the job done” box spring included free with your mattress purchase may sound great at the time—but it could lead to the untimely ruin of your new mattress. The problem with cheap foundations is that they do not offer enough support. Thin slats placed feet apart might work for a while, but once your mattress begins to sag through them, the damage is irreparable.


The Bed Boss Everlast Folding Foundation is a great compromise if you need a box spring for your frame. The Everlast features a metal lattice structure that provides even support across the entire surface of your mattress. It increases comfort while protecting your mattress from premature wear and tear.


Normal Wear and Tear

Using a good foundation with your memory foam mattress, but still noticing some sagging? Due to the nature of foam, a memory foam mattress will soften over time. However, sagging should be minimal within the first five to six years of mattress ownership. The average lifespan of a memory foam or hybrid mattress is eight to ten years for best comfort. If your mattress is in this age range or older, it may be time to simply replace it.

Many warranties do not cover softening from normal wear and tear, so remember to take this into consideration when shopping for a new mattress. Curious about the warranty we offer at The Bed Boss? All Bed Boss mattresses come with a prorated twenty-year warranty, which means that you can replace your mattress at a discount any time. Learn more here.


Is My Mattress Defective?

Experiencing extreme discomfort due to sagging in your relatively new mattress? On rare occasions, new mattresses may be defective and qualify for replacement under the manufacturer’s warranty program. Most manufacturers require sagging to exceed one to two inches of depth before they will consider your mattress defective. 


Keep in mind that foam degrades over time—that is natural and expected. However, extreme degradation that leads to very deep sags is not normal. If your new mattress develops deep dips, get in touch with your mattress manufacturer to inquire about submitting a warranty claim.

What Can I Do to Prevent Sagging?

Follow these simple steps to help extend the life of your mattress:

  • Get a supportive bed frame. The best types of foundations for your memory foam or hybrid mattress are slatted bed frames and solid platforms. Always choose a frame that has wide support slats that are closely placed together. Ensure the middle of the frame is supportive, too.

  • Use a mattress protector. Always have a mattress protector on your bed to prevent dust, dander, and moisture from invading and eventually deteriorating the foam comfort layers. Mattress protectors are not only good for keeping your mattress in good cosmetic condition, but also for extending the overall life and comfort of your mattress.

  • Rotate your mattress. Rotating your mattress regularly can have a profound effect on its longevity. Modern memory foam and hybrid mattresses are not two-sided and cannot be flipped. Alternatively, a 180 degree rotation every few months can even out the wear and help your mattress stay comfy longer.

  • RELATED: 7 Ways You Can Make Your Mattress Last Longer

At The Bed Boss, we like to ensure that our customers have a good frame to place their mattress on. Our lineup of adjustable powered bases like the 604 Maximize have solid three-quarters of an inch plywood foundations—perfect for soft memory foam or hybrid mattresses. Alternatively, our Reliable Folding Frame is inexpensive and provides excellent support for any type of mattress without the need for a boxspring.


Check out this further reading on how to pick out the best support system for your mattress: