Best Mattress for Bunk Beds in South Africa
Best Mattress for Bunk Beds in South Africa
Quick answer: the right bunk bed mattress is thin enough to keep the top bunk's guardrail doing its job, and firm enough that it will not sag within a year. Bunk frames built to the EN 747-1:2024 safety standard, the standard most South African-made bunk frames are built to, need at least 160mm (16cm) of clearance between the top of the mattress and the top of the guardrail. Our Comfort Foam mattress now comes in two heights at the same R2,399 (Single, mattress only): the standard 18cm build, and a new 150mm (15cm) Bunk Bed Height built specifically for tighter guardrails. Same 50 kg/m3 SABS-approved foam, same 3 year warranty, same 365 night trial, either way.
The two villains of a bunk bed mattress
Most bunk bed mattress problems are not about comfort at all, they are about two separate failures. The first is the obvious one: a thin sponge pad that dips and loses its shape within a year, because it was never built to be slept on every night. The second is the one almost nobody checks: a mattress so thick that it "fits" the frame's length and width perfectly, but sits so high on the top bunk that it defeats the guardrail's entire purpose. A guardrail sized for a 15cm mattress does not protect a child sleeping on top of an 18cm or 20cm mattress the way it was designed to.
Measure your guardrail before you buy
EN 747-1:2024 is the bunk bed safety standard most South African-made bunk frames are built to. There is no confirmed South African national standard (SANS) number for this specific requirement, so we cite EN 747-1:2024 by name, not as South African law, but as the standard local frame manufacturers commonly design to. It requires the top of the mattress to sit at least 160mm (16cm) below the top of the guardrail.
The arithmetic is simple: guardrail height above the bed base, minus 16cm, is your maximum safe mattress thickness. Our standard Comfort Foam Single is 18cm total, so it needs a guardrail at least 34cm above the base (18 + 16). The new 150mm (15cm) Bunk Bed Height option needs only 31cm (15 + 16), which is why it exists.
| Mattress | Height | Minimum guardrail height needed | Price, Single, mattress only |
|---|---|---|---|
| Comfort Foam Single, standard build | 18cm (150mm foam core + cover layers) | 34cm above the bed base | R2,399 |
| Comfort Foam Single, 150mm Bunk Bed Height | 150mm (15cm) | 31cm above the bed base | R2,399 |
The plan: three steps
| Step | What to do |
|---|---|
| 1. Measure your guardrail | From the top bunk's base to the top of the guardrail rail, in centimetres. |
| 2. Pick your height | 34cm or more of clearance: either height works. Under 34cm but at least 31cm: choose the 150mm Bunk Bed Height. Under 31cm: speak to us before you order. |
| 3. We deliver nationwide | Both heights ship from our own South African factories, free delivery nationwide. |
We could not find a South African bunk bed retailer, including the most-cited one for this exact search, that publishes a mattress thickness number or a guardrail clearance rule anywhere on their site. Most sell the frame with a generic "high-density foam mattress" add-on and leave the safety arithmetic to you. We would rather publish the numbers and let you check them yourself.
When has your child outgrown the bed, not just the mattress?
A simple rule: a bed is outgrown when your child's head and feet come within 10cm of either end, meaning usable length is the mattress length minus 20cm. Our 188cm Single comfortably serves a child up to about 168cm tall.
Frequently asked questions
What is the minimum guardrail clearance for a bunk bed mattress?
EN 747-1:2024, the safety standard most South African-made bunk frames are built to, requires at least 160mm (16cm) of clearance between the top of the mattress and the top of the guardrail.
Which Comfort Foam height should I choose for my bunk bed?
If your guardrail gives 34cm or more of clearance above the base, either the standard 18cm build or the 150mm Bunk Bed Height works. If it gives less than 34cm but at least 31cm, choose the 150mm Bunk Bed Height. Both are R2,399 for a Single, mattress only.
Do both Comfort Foam heights have the same warranty and trial?
Yes. Both the standard 18cm build and the 150mm Bunk Bed Height are 50 kg/m3 SABS-approved foam, with a 3 year warranty and the standard 365 night trial and 30 day money back guarantee.
Is EN 747-1 a South African law?
No. There is no confirmed South African national standard (SANS) number for bunk bed guardrail clearance. EN 747-1:2024 is a European standard that South African-made bunk frames commonly build to, and we cite it by name only.
Related: Best mattress for bunk beds, the full guide · What thickness should a bunk bed mattress be · Can I put a regular mattress on a bunk bed · Kids mattresses