How to Make Crib Mattress Higher

Do you have a small child and are in the market for a crib? If so, you’ll want to make sure that you get one with a mattress that is at the right height. A lot of parents make the mistake of getting a crib that has a too-low mattress, which can be dangerous for their child. One thing that you may not have considered is making your crib mattress higher. This is a great way to make sure that your baby is safe and comfortable. In this post, we’ll teach you how to make crib mattress higher so that your child will be safe and comfortable when they sleep.

How to Make Crib Mattress Higher

What is a Crib Mattress?

A crib mattress is a specially designed mattress that fits into a baby’s crib. It provides a safe and comfortable sleeping surface for your child. It usually has firm support to prevent suffocation or Sudden Infant Death Syndrome (SIDS). Crib mattresses come in different sizes and shapes to fit different cribs. Some of the common types include foam, innerspring, and organic crib mattresses.

You can purchase crib mattresses from many different retailers, including baby stores, department stores, and online. When choosing a crib mattress, make sure it meets safety standards such as firmness and proper fit in the crib.

Why Make Crib Mattress Higher?

One of the main reasons for making your crib mattress higher is to ensure your child’s safety. Babies grow and develop quickly, and if the mattress is too low, they can easily climb out of their crib or fall over the sides. A higher mattress also reduces the risk of suffocation if your baby rolls onto their stomach while sleeping.

Additionally, as your baby grows, you may need to make the crib mattress higher to avoid bending over too much when putting them down or picking them up. This can cause strain on your back and arms.

How High Should Crib Mattress Be for Newborn?

Choose a Foam That is Thick Enough

The height of the crib mattress for a newborn baby should be at least 4 inches lower than the top of the crib. This is to ensure that your baby remains safe and comfortable while sleeping in the crib. It is important to note that as your baby grows, you may need to adjust the height of the mattress accordingly. For example, if your baby is able to sit up on their own, then the mattress should be lowered slightly so that they can easily get in and out of the crib. On the other hand, if your baby has begun to crawl or walk, you may want to raise the mattress a bit higher for added safety. It is also important to check your crib’s instruction manual for specific directions on how to adjust the height of the mattress properly. Ultimately, it is important to make sure that your baby’s mattress is set at a safe and comfortable level. Doing so will help ensure both your and your little one’s peace of mind while they sleep soundly.

Needed Materials:

Crib Mattress:

The first and most important material you’ll need is a crib mattress. Make sure to choose one that meets safety standards and fits properly into your baby’s crib.


Of course, to make the crib mattress higher, you’ll need a crib! Choose one with adjustable heights so that you can easily change the height of the mattress as your baby grows.

Mattress Support Springs:

Some cribs come with support springs that can be adjusted to raise or lower the mattress. If your crib has these, make sure to check the instruction manual for how to properly use them.

Crib Mattress Pads/Protectors:

These are optional but highly recommended as they provide an extra layer of protection for your baby’s crib mattress.


You may need a screwdriver, pliers, and/or an adjustable wrench to adjust the height of your baby’s crib mattress. Make sure you have these tools on hand before attempting to make any adjustments.

10 Step How to Make Crib Mattress Higher

Step 1: Gather Your Tools and Materials

Start by collecting the tools and materials you’ll need to make your crib mattress higher. This includes a firm piece of plywood, a power drill, screws, a jigsaw (or other saws), measuring tape, and sandpaper. If you’re using a plywood board, you should also purchase some foam padding or cushioning. Make sure to choose a foam that is thick enough to provide additional height and firm enough to support your baby.

You will also need to have a helper on hand to help you lift and hold the mattress in place while making adjustments. The process will be much easier and safer with a second set of hands.

Step 2: Measure the Crib Mattress

Using your measuring tape, measure the length and width of the crib mattress. Write down these measurements so that you can use them later when cutting your plywood. If you’re using a foam pad, you may also need to measure the thickness of the mattress and pad. Make sure to leave a little extra room for the plywood and padding when measuring.

You should also measure the space between the bottom of the mattress and the top of the crib to determine how much higher you want your mattress to be. The recommended height is typically 4 inches lower than the top of the crib, but you can adjust this based on your baby’s needs.

Using Your Power Drill

Step 3: Cut Plywood to Size

Using the measurements from step 2, cut your plywood to fit inside the crib frame with some extra space for expansion and contraction. You can use a jigsaw or another kind of powered saw for this task. Although you can measure and cut the plywood by hand, using a power saw will make the job much easier. If you’re using a foam pad, cut it slightly smaller than the plywood so that it fits snugly inside the crib frame.

You may also want to sand the edges of the plywood and foam pad for a smoother finish. It’s always a good idea to sand any rough or uneven edges to prevent splinters and ensure safety for your baby.

Step 4: Sand Edges and Corners

Enjoy Your Newly Elevated Crib Mattress

Once you have your plywood cut to size, use sandpaper to smooth out any rough edges or corners. This will help make sure the plywood doesn’t snag on any fabric when you place it in the crib. Try to make the edges as smooth as possible. Although you can do this by hand, using an electric sander makes the process much faster and easier.

You should also sand down any rough spots on the crib frame to ensure that your baby’s bedding doesn’t snag or catch anything.

Step 5: Drill Screw Holes

Using your power drill, create holes for screws along the edges of the plywood. Make sure that the hole is small enough that it won’t show through the fabric of your crib mattress. If you’re using a foam pad, make sure to leave enough space for it when drilling the holes. Make sure to drill the holes evenly on all sides and in a straight line.

But before drilling, make sure to measure the distance between screws so that they are evenly spaced. This will help ensure the plywood is properly supported and won’t sag or bow.

Step 6: Place Plywood in the Crib Frame

With all of your preparations complete, carefully place your plywood inside the crib frame so that it rests against the bottom of the mattress. While doing this, make sure to keep the holes lined up and centered so that they’ll be easy to access when attaching screws. If you’re using a foam pad, place it on top of the plywood before inserting it into the crib.

You may need to adjust the placement of the plywood a few times to make sure it’s centered and fits snugly. It’s also a good idea to have your helper hold the plywood in place while you attach the screws.

Step 7: Secure Plywood to Crib Frame

Choose Something That is Hypoallergenic

Use the screws that you drilled holes for in Step 5 to secure the plywood to the crib frame. Make sure that the screws are tight and secure but not so tight as to cause damage or stress on the wood. To make sure the plywood is firmly attached, use a screwdriver to tighten each screw.

You can also add washers or other hardware to secure the plywood further if desired. Just make sure that nothing protrudes from the frame and that all edges are smooth and safe for your baby.

Step 8: Test Fit Mattress

Now that your plywood has been secured test fit your mattress on top of it. If it fits snugly and securely, then you’re ready for the next step. Try to move the mattress around a bit to make sure there are no gaps between the wood and fabric. While the plywood should be firmly attached, remember to take care when placing the mattress on top of it.

The mattress should now be higher than it was before, providing your baby with a safer and more comfortable sleeping space.

Step 9: Add Pillow Top Topper

If you want an even higher crib mattress, add a pillow top topper to your bedding setup. This will provide extra comfort and support while still allowing the mattress to fit snugly into the crib frame. Although this isn’t necessary, it can be a nice addition to your baby’s bedding. If you’re using a foam pad, make sure it’s thick enough to support the mattress and pillow top.

You can also consider using a waterproof mattress pad to protect your investment from any accidents or spills. It’s always a good idea to have extra layers of protection when it comes to your baby’s sleeping environment.

Step 10: Enjoy Your New Crib Mattress

And finally, enjoy your newly elevated crib mattress! You can now be sure that your baby has a safe, comfortable place to sleep or play in their crib. With these steps, you’ll be able to easily make your crib mattress higher for years to come. While you may need to buy a new crib every few years, this basic method will stay the same no matter what kind of crib you have.

These steps are designed to help you make your crib mattress higher and provide a comfortable, safe place for your baby. With some simple tools, materials, and steps, you can easily upgrade the height of your crib mattress so that it works better for the needs of your family.

Things to Consider When Making Crib Mattress Higher:

Consider the Size of Your Crib Mattress:

Before you purchase any type of product to raise your crib mattress, make sure that it is compatible with the size of your crib mattress. If the size is not right, it may cause the mattress to be unsafe or unstable. Make sure to double-check the dimensions before making your final purchase.

Think About Safety and Comfort:

When you are raising the height of your baby’s crib mattress, think carefully about their safety first. Make sure that whatever product you use is secure and won’t cause any potential harm to them. Also, consider their comfort level when they are sleeping on a higher mattress.

Look Into Firmness Levels:

If you want to make sure that your baby gets a good night’s sleep, look for items that can be adjusted according to firmness levels so they can be comfortable in any position. If you are looking to raise the mattress for safety reasons, then make sure that your product is also able to provide support and stability.

Look At the Materials Used:

Be mindful of the materials used when raising your baby’s crib mattress. Choose something that is hypoallergenic, breathable, and durable so you can be sure that it won’t cause any harm to your child. If you are raising your mattress for comfort reasons, then look for something that is soft and cushiony. Make sure that all materials used are free from toxic chemicals, such as phthalates and lead.

Check for Warranties:

Make sure to always look for a warranty on products so you can be protected if something goes wrong. This will also give you peace of mind, knowing that you have some kind of protection should anything happen with the product.

These are just a few things to consider when looking into making your baby’s crib mattress higher. This way, you can rest assured that they will sleep soundly and safely while they sleep.

Frequently Asked Questions:

Q: Can I Use Any Type of Material to Raise My Crib Mattress?

A: No, it is important to choose a safe and secure material that will not harm your baby or cause instability in the crib. You can use plywood or a foam pad, but make sure they are the right size and thickness for your needs. The materials should also be free from any toxic chemicals.

Q: Is It Safe to Use a Pillow Top or Waterproof Mattress Pad?

A: Yes, as long as they are properly secured and do not create gaps between the mattress and crib frame. Make sure to choose a waterproof pad that is safe for your baby’s sensitive skin and easy to clean. Otherwise, it may not be necessary to use a pillow top or waterproof pad.

Q: Can I Make My Crib Mattress Higher for an Older Child?

A: Yes, you can still follow these steps to make your crib mattress higher for an older child who needs more support and comfort while sleeping. Just make sure the materials used are sturdy enough to support their weight and provide a comfortable sleeping surface.

Q: Do I Need to Disassemble My Crib to Make the Mattress Higher?

A: It depends on the type of crib you have. Some cribs may require disassembly, while others can easily be adjusted without being taken apart. Make sure to check your crib’s manual or consult with a professional before making any changes that may affect the safety and stability of the crib.

Q: Is It Necessary to Raise My Crib Mattress?

A: Raising your crib mattress may not be necessary for all babies, but it can provide added benefits such as easier access for parents and more comfort for older children. Ultimately, it is up to personal preference and what works best for your family’s needs.  So, consider the different factors before making a decision.


By following these methods, you can create a safe sleep environment for your baby that meets all the current safety guidelines. And once your baby starts pulling up and standing on their own, you can easily revert back to a standard-sized mattress. So don’t hesitate to try out one of these methods today and give yourself some extra peace of mind while your little one sleeps soundly through the night.

Thanks for reading our blog post on how to make crib mattress higher! We hope you found it helpful and informative.

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Loren Jones

Hi, my name is Loren. I live with my husband and 4 lovely kiddos in the Eastern part of San-fransisco. I have a smart beautiful,curious 6 year old daughter, a handsome 11-year-old son, an intelligent and tech geek 15 years old son and a creative, artistic 12-year-old stepson. With each of my kids being five years apart, I feel that I’m now continually phasing in and out of each stage of parenting! I’ve learned a lot about the way children learn and behave, especially in a school setting with regards to curriculum. I enjoy sharing that insight through my writing and hope that it can help others.