How to Fix a Sagging Mattress? A Complete Guide

A sagging mattress is a common issue that can occur due to aging, improper support, or uneven weight distribution. Over time, this can lead to discomfort, poor sleep quality, and even back pain. To fix a sagging mattress, you need to address the root cause, whether it’s from the mattress materials breaking down or an unsupportive bed frame.

The average lifespan of a mattress is about 7-10 years. After this period, the materials (springs, foam, etc.) begin to break down, which can cause sagging. If your mattress is less than this age but still sagging, it might be due to poor support from the bed frame or foundation. Research indicates that about 30% of people report discomfort due to sagging mattresses, which can lead to disrupted sleep patterns.

Procedure to Fix a Sagging Mattress:

Rotate the Mattress: Rotate your mattress 180 degrees every 3-6 months to ensure even wear. This can extend its lifespan by up to 25%. Rotating regularly can help reduce sagging.

Use a Mattress Topper: If the sagging is moderate, adding a mattress topper (preferably memory foam or latex, which can cost between €45 to €180) can help cushion the affected areas. A topper of at least 5-10 cm in thickness will provide noticeable improvement.

Reinforce the Bed Frame: A weak or unsupportive bed frame can also cause sagging. Placing a piece of plywood (costing around €18) under the mattress can offer extra support, improving the mattress's firmness.

Mattress Warranty: If your mattress is still within warranty (usually between 5-10 years), contact the manufacturer to see if you’re eligible for a repair or replacement.

What Causes Sagging in Mattress?

The cause of sagging in the mattress can happen because of the weight of your body and your sleeping position can create pressure points on the mattress. Over time, these pressure points can lead to indentations or sagging, especially in areas like the hips and shoulders where weight distribution is concentrated.  
 
Over time, all mattresses experience natural wear and tear. The materials inside, such as foam or springs, can deteriorate due to regular use, leading to loss of shape and support. This is particularly true for mattresses that are used frequently, as continuous pressure can cause sagging in areas where you sleep most often.

Can a Sagging Mattress Be Repaired?

Yes, but with limitations. While it's possible to temporarily address a sagging mattress, a permanent fix often requires replacing it entirely. This is because the underlying materials that cause sagging, such as worn-out springs or compressed foam, are difficult to repair effectively.

Can a Mattress Topper Fix Sagging in a Mattress?

Yes, a mattress topper can help alleviate sagging, but it's not a permanent solution. While a topper can provide additional cushioning and support, it won't address the underlying cause of the sagging, such as worn-out springs or compressed foam. 

Here's how a mattress topper can help: 

Provides extra cushioning: A topper adds a layer of soft material between you and the sagging mattress, making it feel less uncomfortable. 

Evens out the surface: By providing additional support, a topper can help to even out the uneven surface caused by sagging. 

Improves comfort: A well-chosen mattress topper can significantly improve your sleep quality and comfort. Learn more about how to choose a comfortable mattress. 

Why Is My Mattress Sagging on the Edges?

Your mattress is sagging on the edges because if you consistently sleep on one side of the bed, the edges of the mattress may sag over time. Or your mattress is made with inferior materials, it may be more prone to sagging.

How much sag in a mattress is acceptable?

A sag of 1-2 centimeters is typically acceptable for most types of mattresses and shouldn't greatly impact your sleep. Studies suggest that sagging beyond 2.5 centimeters (about 1 inch) can start to cause noticeable discomfort, leading to potential misalignment of the spine during sleep.

What to Consider:

Comfort: If you don’t feel any discomfort or pain when lying on the mattress, minor sagging (1-2 cm) may not be an issue. But once it reaches 2.5 cm or more, you may start to feel the effects on your back and posture. 

Mattress Type: Innerspring and hybrid mattresses tend to show sagging more visibly compared to memory foam, but both types should not exceed 2.5 cm for optimal support. 

Warranty: Many mattress warranties cover sags of 2.5 cm or more. It’s worth checking with the manufacturer to see if your mattress qualifies for repair or replacement under warranty. 

Can a Sinking Mattress Cause Back Pain?

Yes, a sinking mattress can absolutely cause back pain. When your mattress sinks, it doesn’t provide the support your spine needs, leading to improper alignment. Over time, this misalignment can cause tension and strain in your lower back, resulting in chronic pain. Additionally, as certain areas of your body, like your hips and shoulders, sink deeper into the mattress, they create pressure points, which can worsen discomfort.  

If you're waking up with a sore back, your sinking mattress might be to blame. Replacing or reinforcing the mattress can help relieve the pain and improve your sleep quality.