Posted by Shane Cousins
on March 29, 2024
Selecting the right mattress for a bunk bed is about more than comfort - it’s a critical decision for safety, durability, and a restful night’s sleep. Whether you’re furnishing a child’s room, a shared bedroom, or a guest space, understanding mattress types, thickness limits, and material options will help you make the best choice. This guide covers everything from traditional open-coil mattresses to memory foam, pocket sprung, and waterproof options.
Why Bunk Bed Mattresses Are Different
Bunk bed mattresses have specific requirements that make them distinct from standard mattresses. We cover this specific topic in depth in our blog asking the question, can you use a regular mattress on a bunk bed? To summarize, below are the key points on what makes a bunk bed mattress different to a regular mattress:
- Size & Fit: A mattress must fit snugly within the frame. Top bunks often require a small single (75cm x 190cm) or short single (75cm x 175cm). Non-standard sizes may require a custom mattress.
- Thickness: Safety rails on top bunks require careful consideration. A mattress that’s too thick reduces the effectiveness of the guard rail, increasing fall risk. We recommend a maximum of 18cm thickness for top bunks.
- Material & Durability: Memory foam and pocket sprung mattresses offer longevity and support, while open-coil mattresses provide a lightweight, cost-effective alternative.
- Breathability & Hygiene: Proper airflow prevents moisture build-up and promotes a cleaner, fresher sleeping environment, particularly important in closed lower bunks.
By considering these factors, you can confidently choose the right mattress for your bunk bed. Our guide aptly titled 'how long is a bunk bed mattress' can give you peace of mind moving forwards.
Open-Coil Mattresses
Overview
Open-coil mattresses (innerspring mattresses) are a traditional choice featuring interconnected metal springs topped with padding. They are lightweight, cost-effective, and durable - making them a practical option for bunk beds.
Benefits
- Affordable and accessible
- Lightweight for easy handling, ideal for top bunks
- Durable for regular use
Considerations
- Motion transfer is higher than memory foam or pocket sprung
- Comfort levels vary depending on quality
Buying Tips
- Check spring count and gauge for optimal support
- Ensure top bunk mattresses do not exceed 18cm thickness
- Look for quality padding and durable covers
Memory Foam Mattresses
Why Choose Memory Foam?
Memory foam adapts to the shape of the body, providing pressure relief, support, and motion isolation. It’s ideal for restless sleepers and hypoallergenic for children with allergies.
Benefits
- Contours to the body for pressure relief
- Absorbs motion, preventing disturbance between bunk occupants
- Adaptable for all sleeping positions
Considerations
- Can retain heat unless designed with cooling technology
- Body impressions may develop over time
Buying Tips
- Stick to the 18cm thickness guideline for top bunks
- Check foam density for durability and support
- Look for cooling features such as gel or open-cell foam
- Choose firmness based on sleeper preference
Pocket Sprung Mattresses
Why Pocket Sprung?
Each spring is individually pocketed, allowing independent movement and tailored support. They offer durability, airflow, and excellent motion isolation, making them ideal for bunk beds, particularly lower bunks.
Benefits
- Targeted support across the body
- Minimizes motion transfer
- Long-lasting shape and comfort
Considerations
- Heavier weight may not suit top bunks
- Higher price point than open-coil mattresses
Buying Tips
- Higher spring count equals better support
- Keep top bunk thickness below 18cm
- Optional comfort layers for added softness
Waterproof Mattresses
Waterproof mattresses add protection against spills, moisture, and allergens. They are available across open-coil, memory foam, and pocket sprung types, making them perfect for children or high-use environments.
Key Features
- Durable waterproof covers that resist tearing
- Breathable materials to maintain airflow and comfort
- Compliant with top bunk thickness limits (18cm)
Safety & Comfort Tips
Top Bunk Safety
The guard rail on top bunks is essential. Ensure the mattress does not exceed 16cm so the rails can provide maximum protection.
Mattress thickness is key in regards to safety on a bunk bed as well as comfort. Explore bunk beds and mattress thickness in more depth.
Comfort Considerations
Choose a mattress that supports proper spine alignment, provides adequate cushioning, and balances firmness with comfort for your sleeper’s needs.
Additional Buying Tips
- Consider age, weight, and sleeping habits of the user
- Look for certifications for foam and materials
- If possible, test the mattress before purchasing
Conclusion
Choosing the right bunk bed mattress means balancing safety, comfort, and durability. Open-coil, memory foam, and pocket sprung mattresses each offer unique advantages, while waterproof options provide added protection. Prioritising top bunk thickness, support, and quality ensures a safe, comfortable, and long-lasting sleeping environment for all users.
Now you've covered bunk bed mattresses, for guidance on selecting the right bed frame to pair with your mattress, check out our ultimate guide to choosing a bunk bed.
Shane Cousins
Marketing Executive
Shane has been part of the Reinforced Beds team for over four years, bringing his BSc Honours degree together with a passion for helping customers find the right products. He enjoys creating buying guides and collection insights that simplify the decision-making process, while also keeping an eye on the latest bedroom and furniture trends. Beyond writing, he produces videos and media content that bring our products to life, giving customers a closer look at what makes them special.
