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How to Raise a Crib Mattress: Your Guide to Elevating Baby’s Bed Safely and Efficiently

From the Puffy Editorial Team | 5 min read.
How to Raise a Crib Mattress: Your Guide to Elevating Baby’s Bed Safely and Efficiently

Navigating the ever-changing needs of a growing baby can be exhausting. And let's face it - cribs are an essential but often complicated piece of the puzzle. One moment, your baby is a small bundle swaddled snugly in their crib.

The next, they're a mobile dynamo, ready to explore new heights - literally. That's where the question of "how to raise the crib mattress" comes into play. Read on as we demystify this essential aspect of crib ownership.

Table of Contents

Why Raise the Crib Mattress?

In the early months, raising the crib mattress helps reduce back strain as you pick up or put down your newborn multiple times a day. Also, as your child develops the ability to sit and pull themselves up, the mattress height becomes a critical factor in ensuring their safety. In summary, key reasons for raising the crib mattress include:

  • Ease for parents: Minimizing the lean into the crib makes life easier for you.
  • Safety for the baby: A higher mattress ensures little adventurers don't topple out of the crib.

How to Raise Crib Mattress Height

Adjusting the crib mattress height might sound daunting, but it's usually a straightforward process. The key is to be meticulous and to never cut corners when it comes to your baby's safety.

Most cribs come with adjustable height settings, and the following guide breaks down how to make these adjustments. Whether you’re a first-time parent or you're dusting off the crib for a new addition, these steps should set you on the right path:

Tools You'll Need

Before you get started, gather the necessary tools. Commonly, you'll need:

  • An Allen wrench or screwdriver (as specified in your manual)
  • Your crib’s instruction manual for specific guidance
  • A measuring tape to double-check dimensions

A Step-by-Step Guide

  1. Read the Manual: Always begin by referring to your crib’s instruction manual. Different brands and models have unique mechanisms, and it's crucial to understand yours.
  2. Identify the Height Settings: Most cribs have two to four adjustable height settings. Locate these on your crib's frame before you start the actual adjustment.
  3. Gather Tools: As mentioned above, most cribs require an Allen wrench or a screwdriver for adjustments. Have these at hand to avoid scrambling for tools midway through.
  4. Safety First: Before loosening any bolts, ensure that the crib is empty and stable. You don't want to risk it tipping over.
  5. Loosen the Bolts: Use your tool to loosen the bolts holding the mattress support in place. Do not fully remove them; loosening will allow you to adjust the height.
  6. Get a Helping Hand: If possible, it's easier to have someone assist you at this stage. One person can hold the mattress support while the other adjusts the bolts.
  7. Adjust and Tighten: Move the mattress support to the desired height. Double-check it is evenly placed at each corner before you tighten the bolts back into place.
  8. Safety Checks: After the bolts are tightened, give the crib a little shake to ensure everything is secure. Make sure there is no wiggling and that all bolts are tightened adequately.
  9. Check for Gaps: Before placing your baby back into the crib, ensure there are no gaps between the mattress and the crib walls. Gaps can be a safety hazard.
  10. Final Review: Consult your manual once again to make sure you haven’t missed any brand-specific recommendations or safety guidelines.

By following these steps meticulously, you're not only ensuring a more convenient height for yourself but also enhancing the safety measures for your baby. Adjusting the crib mattress height may be a small task in the grand scheme of parenting, but it’s an important one nonetheless.

When to Lower the Crib Mattress

As your baby grows, you'll need to revisit the mattress height. Generally, it's time to lower the mattress if:

  • Your baby can sit: Once your baby can sit, it's time to lower it to the middle setting.
  • Your baby can stand: If they can pull themselves to a standing position, you'll want to move to the lowest setting.

Check out Puffy mattress reviews from real customers and see how we compare with other brands.

Precautions to Take When Adjusting Crib Mattress Height

As you embark on this mattress-adjusting journey, remember that safety comes first. Here are some precautions to consider:

  • Check Tightness: After adjusting, double-check to ensure all bolts are secure.
  • Regular Monitoring: Periodically inspect the crib to ensure it remains sturdy.
  • Mind the Gap: Ensure there are no gaps between the mattress and crib sides, as these could be dangerous.

Exploring Products to Assist in Raising the Crib Mattress

If manual adjustment isn't for you or you're looking for a more customized height, there are products designed to safely raise a crib mattress:

  • Mattress Elevators: These fit under the mattress and can be adjusted for a slight angle.
  • Crib Wedges: These are similar to elevators but offer a steeper incline, often used for babies with reflux.


Raising a crib mattress is a rite of passage for every parent dealing with a growing baby. While the task may seem daunting, most modern cribs make it a straightforward process. Whether you're doing it to make your life easier or to keep a newly mobile baby safe, knowing how to properly adjust your crib's mattress height is invaluable information.

Use our store locator to find the closest furniture or mattress store near you and feel the cloudlike comfort of our Puffy Mattress in person.

As you go through the various stages of crib mattress height, always remember that each level serves a specific purpose. So adjust wisely and sleep easy, knowing you've done your best to provide a safe and comfortable sleep environment for your little one.

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