Your Mattress Is Only As Good As the Foundation Beneath It.

by Shannon on May 2, 2016 10:31:23 AM


The most common question we get at 4Sleep is what type of foundation should be used with our mattress.  This is not only the most common question, but also the most important question.  Just like your home, your relationships, and your values; if they are not built upon a strong foundation then they do not last long.  This goes the same for your mattress.  A good foundation is key to your mattress longevity and continued support. 

Your mattress is only as good as the foundation beneath it.

Here are the top 3 types of foundations to be used with a Memory Foam Mattress:

Platform/Slatted Foundations

Platform foundations have recently become very popular for several reasons:

  1. You don’t need to purchase box springs in addition to a frame. A platform foundation is created of a series of metal or wooden slats close together that provide the support necessary for your mattress without purchasing a box spring. 
  2. It provides a “low profile” look which can make a small bedroom appear much larger and many come with built in storage spaces.

Slatted foundations are highly recommended for Memory Foam mattresses because they provide air flow as well as support.  However, to get the adequate support you need from a slatted foundation, the slats need to be NO more than 3” apart.  The more slats the better.  The closer together the slats are, the less likely sagging will occur through the open spaces.

Memory Foam mattresses have a core layer of solid foam which needs to breathe.  Therefore, the spaces in-between the slats provides adequate breathability for your mattress.  This will reduce mold or mildew build up because moisture will not become trapped under your mattress.

There are generally two types of slatted foundations.  Solid wood slats and curved European flexible slatted foundations.  The main difference between these types of foundations is:

  1. Flexible slats will give way to your body weight and will provide a unique support for any individual sleeper because the flexible slats adjust to their size and weight.
  2. Solid wood slats will provide a more solid feel which will help to eliminate motion and bounce.

Frame with Box Springs/Foundation

A mattress frame with a box spring/foundation is perfectly acceptable for a memory foam mattress as long as you follow these simple rules:

  1. Any frame being used for a Full size mattress or larger should have a middle support bar with feet.  This center support adds additional stability which prevents that ever so often complaint of mattresses sagging in the middle.  A number one reason for a mattress sagging, bowing or sinking in the middle is because of a poor frame and foundation.
  2. Throw out your old traditional box springs and purchase box springs/foundations that are specifically made for a memory foam mattress.

Traditional box springs literally have coiled springs inside that are designed to give under pressure.  A memory foam mattress is a solid construction and the less “give” underneath it the better.  Therefore, you need to go with the newly designed box springs, now simply called foundations.  These foundations are usually made with steel grids or wood which distribute weight evenly and have very little give.   This allows for the mattress to feel the way it should and provide a solid support system that won’t void the warranty.

Adjustable Bed Base:

Memory foam mattresses are actually ideal for adjustable beds!

  1. The open cell structure is able to bend to fit the contours of the frame, and resilient enough to recover quickly from repeated compressions.
  2. Memory foam mattresses provide support regardless of position, whereas traditional spring mattresses were designed for horizontal sleep.

The 4Sleep Memory Foam mattress would be a fantastic choice for your adjustable bed.

Now that you are aware of the types of foundations that will support your memory foam mattress, here are some other popular ways to support your mattress that we don’t recommend.


Although the floor is a solid base for your memory foam mattress, there is always a concern for breathability.  It is important to have airflow under a memory foam mattress as to prevent any mold or mildew.  Depending on the climate where you live and the type of floor you are putting it on, it may not be the best idea. 


For the same reason you don’t want to place your mattress on the floor, you don’t want to put a sheet of plywood on your frame and put your mattress on it.  Again, a solid wood surface with no spaces does not allow air to circulate under your mattress and can potentially cause moisture build-up which in turn leads to mold and mildew.  It’s worth investing in a new foundation to secure the health of your mattress and yourself!



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