If your pillow-top mattress feels too soft and lacks support, there are various methods you can employ to make it firmer. Adjusting your sleeping environment, using bed accessories like mattress toppers or plywood supports, and maintaining the mattress through rotation or flipping can significantly help increase firmness. Though not every approach may work for every mattress, combining several strategies can yield the best results in achieving the desired firmness for a better night’s sleep.
Understanding Pillow Top Mattresses
Pillow top mattresses have an additional layer of padding stitched on top, which provides a plush and comfortable sleeping surface. Often made from materials such as foam, cotton, wool, or down, these mattresses are favored for their soft, cloud-like feel. However, over time or due to individual preference, you might find that your mattress is too soft, leading to a lack of proper spinal alignment and support.
Why Firmness Matters
Mattress firmness is crucial for spinal alignment and can affect the quality of your sleep. A firm surface provides better support for your back and can significantly influence how restful your sleep is. If a mattress is too soft, it may cause the body to sink in too deeply, leading to discomfort and a host of sleep-related issues.
Adjust Your Room Temperature
Temperature can affect the firmness of a mattress, especially those with memory foam layers. Memory foam becomes softer in warmer temperatures and firmer when it’s cool. By lowering the temperature of your bedroom, you may find the top layer of your mattress becomes firmer.
Our Top 5 Pillow Picks
Updated September 2026MFWW Cervical Contour Memory Foam Pillow
Best for neck pain. A dual-height ergonomic contour cradles your head and supports the neck, for back and side sleepers.
- Contour memory foam
- Dual-height design
- Cool breathable cover
Cooling Shredded Memory Foam Pillows, Standard, 2-Pack
Best value pair. Shredded foam you can adjust to your loft, with a cool-gel feel and no solid-block heat. Two pillows in one box.
- Adjustable shredded foam
- Cool gel
- Hypoallergenic
- Standard 2-pack
Cooling Shredded Memory Foam Pillows, Queen, Set of 4
Best for the whole household. The same adjustable cooling foam in queen size, four to a set, so every bed in the house gets an upgrade.
- Adjustable shredded foam
- Cool gel
- Hypoallergenic
- Queen set of 4
Utopia Bedding Hotel Pillows, Queen, Set of 4
Best hotel-style set. Plush, cooling pillows made to suit side, back and stomach sleepers alike. A safe pick for guest rooms.
- Queen set of 4
- Cooling
- All sleep positions
- Hotel style
Zalmureta Goose Feather & Down Pillows, Queen, Set of 2
Best luxury pick. A three-chamber goose feather and down fill wrapped in a 100% cotton shell, for that five-star-hotel feel at home.
- Goose feather & down
- 3-chamber design
- 100% cotton shell
- Queen 2-pack
Using Cooling Methods
In addition to adjusting your thermostat, consider using fans, opening a window, or investing in cooling bed sheets to further regulate temperature and potentially firm up your mattress.
Use a Mattress Topper
An effective strategy to adjust the firmness of a pillow top mattress is to use a firm mattress topper. Mattress toppers come in various materials such as latex, high-density foam, or even extra-firm cotton. These can alter the feel of your bed without the need to buy a new mattress.
Selecting the Right Material
When choosing a mattress topper, consider materials that are inherently firmer and offer greater support, such as latex or high-density memory foam. These materials provide a supportive layer that keeps your body from sinking too far into the mattress.
Provide Solid Support Underneath
Sometimes, a pillow-top mattress may lack firmness due to inadequate support from the bed base. Ensure that your foundation is stable and robust; otherwise, it can contribute to a saggy mattress feel.
Check the Bed Frame and Box Spring
Inspect your bed frame and box spring for signs of wear and tear. Broken slats or a worn-out box spring can affect the overall firmness of your mattress. Replace any faulty parts to reinforce your mattress’s support system effectively.
Using Plywood or MDF
Placing a solid piece of plywood or medium-density fiberboard (MDF) between the mattress and the bed base can add firmness. This solution provides a uniform and sturdy surface that reduces sagging or sinking.
Flip or Rotate Your Mattress
Regular maintenance like flipping and rotating can significantly prevent uneven wear and improve mattress firmness. For double-sided pillow-top mattresses, flipping can allow the other side to be used, possibly offering a firmer feel. Even if the mattress is not double-sided, rotating it end-to-end can ensure more uniform usage and help maintain its firmness.
Recommended Rotation Schedule
For optimal maintenance, rotate your mattress every three to six months. This routine can balance out the wear and prolong the mattress’s life while maintaining a firmer surface.
Adjust Lifestyle and Sleeping Habits
Surprisingly, your lifestyle choices and sleeping habits can impact mattress firmness. Reducing the time you spend sitting or lying in one spot on the bed during the day can help prevent premature softening.
Weight Considerations
It’s worth noting that how a mattress feels can be subjective and depend on an individual’s body weight. Heavier individuals might need a naturally firmer mattress to avoid sinking in too deeply, while lighter persons may find the same mattress quite firm.
Consider a Mattress Reinforcement Layer
There are also specialized reinforcement layers available that can be inserted between a mattress and its base, which are designed to improve support and enhance firmness. These layers are an easy way to firm up a mattress without having to use a mattress topper.
Reinforcement Layer Types
These layers can come in several forms, such as interlocking panels or a one-piece foundation. They’re created to offer a substantial bedrock for your mattress, making the overall sleep surface feel more supportive.
Check Your Warranty and Return Policy
If your mattress is relatively new and it’s not offering the firmness you require, review the manufacturer’s warranty or return policy. Some companies offer a trial period during which you can return the mattress if it doesn’t meet your comfort preferences.
When to Replace Your Mattress
Despite all attempts to adjust the firmness of your mattress, there comes a time when a mattress may be too worn to provide the necessary support. If your mattress is near or beyond its average lifespan—typically around 7 to 10 years—it might be time to consider a replacement.
Finishing Thoughts
Ensuring your pillow top mattress offers the proper firmness is important for both comfort and health. By incorporating these methods—from adjusting room temperature and adding a firm mattress topper to ensuring adequate support and regular mattress maintenance—you can preserve and enhance the firmness of your mattress. If these efforts do not yield the desired comfort level, it may be time to contact the manufacturer or consider investing in a new mattress that better fits your firmness preferences. Remember that sleep is essential to overall well-being, and having a mattress that provides the right support is a key component of high-quality sleep.
