Why Combine Two Single Mattresses?
Joining two single mattresses can be an excellent solution for couples with different sleep preferences, growing families, or guest rooms that need flexibility. Two single mattresses side by side roughly equal a king-size bed, giving you more space and adaptability — especially when paired with a quality hybrid mattress.
If you already own single beds, joining them can be more cost-effective than buying a new mattress. It’s also ideal if you prefer different firmness levels — one side can be softer or firmer without compromise.
1. Measure and Match Your Mattresses
Before joining two single mattresses, ensure they’re the same size, height, and type. In Australia, a standard single measures 92 cm x 188 cm, while a king single is 107 cm x 203 cm. Two standard singles equal a king-size width but are shorter than a true king mattress.
For best results, use two mattresses of equal thickness and structure. Matching hybrid or pocket spring mattresses, like the Sleep Republic Mattress. will align evenly and maintain consistent support across the surface.
2. Use a Bed Bridge or Mattress Connector
A bed bridge (also known as a mattress connector) fills the small gap between the two mattresses, creating a seamless sleep surface. These connectors typically include a foam wedge or strap system that holds the mattresses securely together.
Tips for setup:
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Place the two single mattresses side by side on the bed base.
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Insert the foam bridge along the join.
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Use the strap to secure both mattresses tightly.
This setup ensures you won’t feel the gap, improving comfort and eliminating movement between mattresses.
3. Choose the Right Bed Base
A stable, supportive base is essential when joining two mattresses. If your bed frames move independently, even a connector won’t prevent separation.
Opt for a solid platform base or a linked ensemble base to keep both mattresses aligned. Sleep Republic’s bed bases provide strong, durable support designed to enhance the performance of your Sleep Republic hybrid mattress.
For adjustable bases, ensure both sides move synchronously to maintain alignment and minimise strain on the mattresses.
4. Secure With a Mattress Protector and Fitted Sheet
Once joined, protect your setup with a high-quality mattress protector. This adds hygiene protection and reduces friction between the mattresses. A king-size fitted sheet will help hold everything in place, giving a smooth, unified surface.
Sleep Republic’s mattress protectors are breathable and soft — ideal for maintaining airflow across both mattresses, complementing the cooling properties of gel-infused memory foam found in the Luxe range.
5. Upgrade for a Seamless Sleep Experience
While joining two singles works well, investing in a purpose-built king or hybrid model can deliver even better results for long-term comfort and spinal support.
The Sleep Republic Luxe Mattress offers premium materials, including a 7-zone pocket spring system and breathable silver-infused fabric for superior contouring and temperature control. For value and everyday comfort, the Sleep Republic ES Mattress is another excellent option.
Pair your setup with a Sleep Republic bundle for a complete sleep solution, including pillows and bedding that complement your mattress perfectly.
Conclusion
Joining two single mattresses together is a practical and flexible solution for couples or families who need extra space without investing in a brand-new bed. With the right connectors, base, and protective layers, you can achieve a comfortable, supportive, and unified sleeping surface.
When you’re ready for a more permanent upgrade, explore Sleep Republic’s award-winning range of hybrid mattresses — expertly designed for exceptional comfort, airflow, and durability.
FAQs
1. Can I join two single mattresses to make a king bed?
Yes. Two standard singles make a king-width bed, though they’re slightly shorter than a true king. Use a bed bridge or connector to close the gap.
2. What’s the best way to stop the mattresses from sliding apart?
Use a mattress connector strap or a non-slip base. A king-size fitted sheet and protector also help hold them together.
3. Will two different mattress types work?
For the best comfort and alignment, both mattresses should have the same height and construction — ideally matching hybrid or pocket spring models.
4. Should I upgrade to a king mattress instead?
If you want a seamless surface and consistent support, a king-size Sleep Republic Mattress is the best long-term choice.
