How to Extend a Bed

By Geoff McKinnen Certified Sleep Coach

Last Updated On September 25th, 2024
How to Extend a Bed

Key Takeaways

  • Assess and Measure: Before extending your bed, accurately measure your current bed frame and mattress dimensions. This ensures you know exactly how much additional length you need and helps you choose the right extension method.
  • Choose the Right Extension Method: Options include bed frame extenders for easy installation, DIY wooden extensions for customization, mattress bridges for temporary fixes, and mattress extenders for seamless length increases. Each method has its pros and cons, so consider your skills, budget, and needs.
  • Ensure Stability and Safety: After extending your bed, check the stability of the frame and ensure all connections are secure. Test the bed for wobbling or creaking, and make sure your bedding accommodates the new dimensions to enhance your sleeping experience.

People come in all shapes and sizes, but beds don’t always keep up. If you’re tall or just enjoy extra space, extending your bed can be a game-changer. A longer bed gives you room to stretch out, preventing those annoying moments when your feet dangle off the edge.

It can lead to better sleep quality, as you’re not constantly adjusting your position to fit. Plus, a bigger bed means more space to snuggle with pets or loved ones. Keep reading to learn how you can extend your bed and improve your sleep setup.

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Assess Your Bed

Before you start extending your bed, you need to know what you’re working with. Taking accurate measurements and deciding on your ideal bed length are crucial first steps in this process.

Measure Current Bed Size

Get out your tape measure and check the length of your bed frame and mattress size. Don’t forget to measure the width too, as you’ll want to maintain it when extending.

Even if you have the manufacturer’s dimensions of your frame and mattress model, it’s always good to double-check! Manufacturers often warn there’s a chance for individual models to vary from these standard dimensions by an inch or so, so measuring your mattress and frame personally means you know exactly what you’re working with.

Make sure to measure from the outermost points of your bed frame size. Write down these measurements, as you’ll need them later when choosing materials.

Choose Your Method

Now that you know your bed’s current size and how much longer you want it, it’s time to pick an extension method. Each option has its own pros and cons, so consider your skills, budget, and needs.

Bed Frame Extenders

Bed frame extenders are pre-made kits designed to lengthen your bed frame. They’re usually easy to install and don’t require advanced DIY skills.

These extenders typically bolt onto your existing frame, providing a sturdy base for the extra mattress length. They’re excellent for smaller changes, like converting a twin to twin XL or turning a full into a queen.

However, they may not be available for all bed types and can be more expensive than DIY options.

DIY Wooden Extension

Building a wooden extension allows for more customization and can be cost-effective if you have basic carpentry skills. You’ll need to create a frame that matches the width of your bed and attaches securely to the existing frame.

This method requires careful planning and precise measurements to ensure stability and a seamless connection with your current bed.

Mattress Bridge

A mattress bridge is a foam wedge or insert that fills the gap between your existing mattress and a smaller additional mattress. It’s a common tool for those converting two twins into a king bed, though it can be used to connect other sizes together.

This method is often the simplest and least permanent option. It’s great for temporary solutions or if you’re renting and can’t modify the bed frame.

Keep in mind that a mattress bridge may not provide the same level of support as other methods and can shift during sleep. Still, it can smooth out the appearance of a split king mattress.

Mattress Extenders

Mattress extenders are specifically designed foam pieces that attach to the end or sides of your existing mattress to increase its length or width. These are typically made from high-density foam that matches the thickness of your mattress, ensuring a seamless transition. They often come with a cover that helps secure them to your mattress and provides a unified look.

There are various types of foam that can be used to extend a mattress:

  • Memory foam extenders conform to your body shape and can provide additional comfort, especially for taller individuals who need extra leg room.
  • Latex foam extenders offer more bounce and responsiveness, which some sleepers prefer.
  • High-resilience polyurethane foam is another option that provides good support and durability for mattress extensions.

While these foam extenders can effectively increase the usable surface of your bed, they may not provide the same level of edge support as your original mattress.

There’s also a limit to how much you can reasonably extend the bed before it fails to hold up—you can turn a full bed into a queen fairly easily, but a queen into a king is far more difficult.

Furthermore, the foam’s density and quality will impact how well it integrates with your existing mattress in terms of comfort and longevity.

Gather Materials

Before you start extending your bed, you’ll need to collect the right tools and materials. Your specific needs will depend on the extension method you’ve chosen.

Needed Tools

Having the right tools on hand will make your bed extension project much smoother. Here’s a list of common tools you might need:

  • Tape measure
  • Pencil
  • Screwdriver (both flathead and Phillips head)
  • Drill with various drill bits
  • Saw (if doing a DIY wooden extension)
  • Level
  • Wrench set

Safety comes first. Always use protective gear like safety glasses and gloves when working with tools.

Materials for Each Method

The materials you’ll need vary based on your chosen extension method. Here’s a general overview:

Bed Frame Extenders:

  • Extension kit (including brackets and hardware)
  • Extra slats or support boards

DIY Wooden Extension:

  • Lumber (matching your bed frame material)
  • Wood screws
  • Wood glue
  • Sandpaper
  • Paint or varnish (optional)

Mattress Extension:

  • Foam insert or wedge
  • Longer covering and other bedding

Mattress Bridge:

  • Foam insert or wedge
  • Additional small mattress
  • Longer covering and other bedding

Don’t forget to measure carefully and purchase slightly more material than you think you’ll need, just in case.

Extend the Bed Frame

Now that you have your materials ready, it’s time to actually lengthen your bed frame. This step is crucial for providing a stable foundation for your extended bed.

Using Bed Frame Extenders

Start by removing your mattress and any slats or supports from your bed frame. Attach the bed frame extenders to the foot of your bed, following the manufacturer’s instructions carefully. Most extenders bolt onto the existing frame, but the exact method may vary.

Once the extenders are securely in place, add any additional support slats that came with the kit. Double-check all connections to ensure they’re tight and the extended frame is level. Finally, test the stability of the extended frame before adding your mattress back on.

Building a Wooden Extension

For a DIY wooden extension, begin by constructing a frame that matches the width of your existing bed and provides the desired additional length. Use sturdy lumber and reinforce corners with brackets for added strength.

Create a plan for attaching this new frame to your existing bed. This might involve bolts, brackets, or a combination of methods. Ensure the connection is secure and can withstand the weight and movement of sleeping.

Add support legs to the extended portion to prevent sagging. Finally, sand any rough edges, paint or varnish if desired, and add slats or a solid panel to support the mattress. Always prioritize stability and safety in your design and construction.

Finishing Touches

Your bed frame is now extended, but there are a few final steps to ensure comfort and safety. These finishing touches will make your newly extended bed both functional and cozy.

Adjust Bedding

With your longer bed, you’ll need to reconsider your bedding. Purchase a larger fitted sheet that accommodates the new length of your mattress. You may also need to buy a longer comforter or duvet to cover the extended bed properly.

If finding extra-long bedding is challenging, consider using flat sheets tucked in at the foot of the bed as an alternative.

Ensure Stability and Safety

Take time to thoroughly check the stability of your extended bed. Lie on the bed and move around to test for any wobbling or creaking. Ensure all connections are tight and secure, retightening any loose bolts or screws.

Safety Checks:

  • Verify that the extended frame is level
  • Check that the mattress is fully supported across its entire length
  • Test the bed’s stability by applying pressure to different areas
  • Ensure there are no sharp edges or protruding hardware
  • Double-check that all legs are in firm contact with the floor

FAQs

Can mattress size be increased?

A mattress’s size and surface area cannot be increased in a permanent or structural way. Mattresses are manufactured to specific standard dimensions, and altering their core structure is not feasible.

However, there are temporary solutions to extend the usable surface area of a mattress, such as adding mattress extenders or bolsters.

Is it cheaper to extend my bed or buy a new one?

Extending your bed is often more cost-effective than buying a new one, especially for custom sizes. The exact cost depends on your chosen method and materials.

However, if your current bed is old or in poor condition, investing in a new bed might be a better long-term solution. Even if your bed is in decent condition, a full mattress replacement is usually more comfortable and effective than DIY extension solutions.

Will extending my bed void its warranty?

Modifying your bed frame or mattress may indeed void the mattress warranty. This is because manufacturers cannot guarantee the performance or durability of their product when it’s used in ways they didn’t intend or test for.

However, some companies may have more lenient policies, especially for removable accessories that don’t permanently alter the mattress. It’s crucial to check your warranty terms before proceeding with any extensions. Consider contacting the manufacturer to discuss your options.

How much can I realistically stretch out my bed?

Most bed extensions add between 6 to 12 inches in length. Extending beyond this range may compromise stability and make finding appropriate bedding challenging.

For significant size increases, it’s generally better to consider upgrading to a larger mattress and bed frame. Always consider your room size and personal needs when deciding on the extension length.

How do I ensure my extended bed is safe to sleep on?

Safety starts with proper construction, using sturdy materials and secure fastenings. Regularly check all connections, ensure the frame is level, and test for stability by applying pressure to different areas of the bed.

If you’re unsure about your DIY skills, consider hiring a professional or opting for a commercial bed extender kit.

Can I extend a bed that has a headboard and footboard?

It is possible but more challenging. You may need to modify or replace the footboard to accommodate the extra length.

If you’re using a wooden extension, consider designing it to match your existing headboard and footboard for a cohesive look.

Will I need special bedding?

Extended beds often require longer fitted sheets and comforters. Look for “extra long” or “California King” sized bedding, which is designed for longer mattresses. If you can’t find suitable sizes, using flat sheets tucked in at the foot of the bed can be a good alternative.

Can I extend a memory foam mattress?

Memory foam mattresses are trickier to extend due to their solid construction. A mattress foam extension or topper is usually the best option for these mattresses.

Alternatively, you might need to purchase a new, longer memory foam mattress to fit your extended frame.

Conclusion

Extending your bed can significantly improve your sleep comfort, especially if you’re tall or simply enjoy more space. We’ve explored the process of assessing your current bed, choosing an extension method, and gathering the necessary materials and tools.

Whether you decide to use bed frame extenders, build a DIY wooden extension, or opt for a mattress bridge, each method has its own advantages to consider. Remember, the key to a successful bed extension lies in careful planning, accurate measurements, and prioritizing safety and stability throughout the process.

By following these steps and taking your time, you can create a custom sleeping space that perfectly fits your needs and preferences.


About the author

Geoff McKinnen is a writer focusing mainly on the healthcare industry and has written articles on everything from foods to help you lose weight to the connection between Alzheimer’s and sleep. Geoff’s passionate about helping readers improve their well-being to lead happier lives. Outside of work, Geoff enjoys cycling and hiking and believes that by leading a healthy lifestyle, he can help others do the same.

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