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How to Keep Split King Mattress Together?

If you have a split king mattress, you might have experienced the frustration of the two sides drifting apart during the night. This can disrupt your sleep and leave you feeling uncomfortable. However, there are several effective methods to keep your split king mattress together and ensure a more restful sleep experience.

In this article, we will explore various techniques and solutions that will help you maintain the alignment of your split king mattress for a peaceful night’s sleep.

Table of Contents

What Causes a Split King Mattress to Split?

Split King Mattress

Split king mattresses tend to split into two because of a weak frame and inadequate support. Your wooden bed frame deteriorates with time making it fragile and crack because of pressure from the body.

Because of the crack, your split king mattress may sink into the hole developed by the damaged frame, making it split. On the other hand, if the material supporting the bed is not enough, the mattress will split.

Methods to Keep Split King Mattress Together

You can maximize several options to keep your split king mattress together. Have a look;

Get a Fitted Bed Frame

Split King Adjustable Bed Sheet

Ensure your bed frame contains a footboard, headboard, and side rails to frame your bed adequately. You can use the correct bed frame size with high rails for your split king mattress. This helps in keeping your mattress in place. Hence it remains together.

You can also use a sturdy piece of wood to frame the mattress. using 2by 4 for extra support if you need it. Ensure your frame is tight against the wall and you center it evenly in your room.

Try Using Velcro Straps

Velcro straps serve as a great way of keeping your split king mattress together. You can begin by fixing one strap around each side of your bed, then ensure you attach the straps. The main aim of using straps is to keep your mattress together even when moving it or transferring it around.

For your straps to attach quickly, ensure you attach them to your mattress inside. You should attach the straps securely before you move the bed around. The split king mattresses may fall apart if they are not connected firmly.

Use Non-Slip Mattress Pads

You can get grippy pads or non-slip mattress pads at any bed store. You only have to place them between the mattresses and base so that your mattresses cannot slide or start splitting. And as simple as that, you can sleep peacefully without your mattresses splitting.

Try a Bed Connector Strap

A bed connector strap is a great way to keep your split king mattresses together. The main work of the straps is to link the two halves and prevent them from splitting or moving around.

Ensure the bed connector strap is tight enough to get a secure link. You can also use a mattress connector strap when moving to help keep your mattress in place.

Pad it Out

You can achieve this by padding out the center of the mattress using an extra pillow or even two. This usually assists in distributing the weight adequately and evenly to eliminate the chances of your mattress sinking in the middle.

Also, if your mattress is on casters, you can fix a piece of cardboard between the mattress and the wheels to stop them from moving.

Additionally, you can put a layer of towels above the sheets to use as stuffing between the box spring and the mattress.

Use Sheet Suspender

Bed Sheet Holder Straps

You can hang a sheet on a wall around your bed. Then place one end over the mattress edge and ensure you securely tack it in. Position the remaining end above the mattress and tuck it in again. This helps to hold your bed together even when moving around.

Adjust the Connector

Find the connector specifically on one side of the mattress. It contains two screws that secure it in place. Loose the screws and then pull your connector from the bed frame. Align the connector towards the other side of your bed frame, and finally, replace the screws.

Use Non-Slip Tape

A non-slip tape is usually strong and keeps your split king mattresses together. You only have to place a piece of tape around your mattress’s edge and secure it in place using bandages and clamps.

You can also use the tape to connect the two halves of split mattresses. The non-slip tape usually stays in place and secures your bed together.

Use a Mattress Gripper

Non-Slip Rugs

You can get a mattress gripper if the above options do not work. You only have to put it under the two mattresses to prevent movement and slippage. Mattress grippers usually provide excellent results because they are more heavy-duty.

Use Non-Slip Rugs


The gaps between the two mattresses can make you uncomfortable, especially when you want to cuddle with your partner.

You can take some non-slip rugs and fold them. Then tuck them down between the mattresses. You can use a bed bridge if the gaps are more diminutive.

Factors You need to Consider

When you are selecting a method to keep your split king mattress together, you need to consider the following factors:

Mattress Type and Thickness

Different mattress types (e.g., memory foam, latex, hybrid) have varying weights and characteristics. Additionally, the thickness of the mattresses can influence the effectiveness of certain methods. You need to choose a solution that is compatible with your mattress type and thickness.

Movement and Weight Distribution

You also need to consider how much movement occurs during sleep and how the weight is distributed on each side of the bed. These factors can affect the stability of the mattresses and influence the choice of the method to keep them together.

Individual Sleep Preferences

Take into account the individual sleep preferences of both partners. Ensure that the chosen method does not compromise the comfort and adjustability of each mattress.


The cost is different among to these methods. You need to determine your budget and choose a solution that fits within your financial constraints.

Frequently Asked Questions (FAQs)

Can I use regular sheets on a split king mattress?

Yes, regular sheets can be used on a split king mattress. However, it’s advisable to use fitted sheets specifically designed for split king beds to ensure a proper fit and prevent them from coming off.

Will using these methods void the warranty of my split king mattress?

Most methods to keep split king mattresses together should not void the warranty. However, it’s recommended to consult the manufacturer or refer to the warranty documentation to confirm this.

How often should I check if my split king mattress is still aligned?

It’s a good practice to check the alignment of your split king mattress periodically, especially after moving or adjusting the bed frame. Additionally, observe if you notice any significant movement or separation during your regular use.

Can I use multiple methods together to keep the split king mattress in place?

Yes, you can combine multiple methods to enhance the stability of your split king mattress. For example, using mattress connector straps in conjunction with non-slip mattress pads can provide extra security.

Are there any alternative solutions if the suggested methods don't work for me?

If the suggested methods don’t work for you, consider reaching out to a mattress professional or retailer for personalized advice. They may suggest alternative solutions based on your specific circumstances.


As you can see, keeping split king mattresses together is easy if you know what to do. Some options include; using a fitted bed frame, Velcro straps, non-slip tape, and sheet suspenders, among many others, as discussed above.

What makes your split king mattresses split can be inadequate support and a weak frame. However, with the above guideline, you can keep split king mattresses together and have the comfort and balance you need.

Author: Jessica

Jessica is a lover of both life and gardening. She loves to share his passion for both on social media. He often posts about his latest gardening projects, as well as tips and tricks for others who might be interested in starting their own gardens. She also frequently posts about the different aspects of his life that he enjoys, from spending time with friends and family to exploring new places.

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