A trundle bed solves the classic children’s room dilemma: two beds in the space of one. But not all of them fit in any room or with any use. This checklist gathers the points worth reviewing before buying, ordered the way someone who has already assembled (and disassembled) several would look at them.
1. Measurements: the point where most purchases fail
- Total length with the trundle pulled out: add the length of the main bed plus that of the drawer. A 190 cm trundle pulled out in a room 2.20 m wide leaves a minimal walkway. Measure with a tape measure on the floor, not with the floor plan.
- Height of the lower bed base: if the trundle sits less than 25 cm off the floor, the mattress collects dust and is hard to air out.
- Clearance under the main bed: many trundle beds need 15-20 cm for the drawer to roll without rubbing against the rug.
- Wheel turning radius: in rooms with furniture nearby, a trundle with large wheels turns better than one with small nylon wheels.
2. Structure and safety
- Guardrail on the trundle: essential if a child under 6 uses it or if it is used as a permanent bed. Check that the guardrail does not fold down on its own.
- Locking system: the trundle must stay fixed in the closed position. Pressure latches are more convenient than screw ones, but check that they do not come loose when pulled.
- Maximum supported weight: the trundle usually holds less weight than the main bed. If it will be used for an occasional adult, check the technical specifications.
- Rounded edges and no exposed screws in the area where the child rests their hands when getting in.
3. Mattresses: the most common mistake
A frequent mistake is reusing a mattress from another bed without checking the thickness. The trundle usually has a limit of 12-15 cm in thickness; a thicker mattress prevents the drawer from closing or makes it stick out and catch. In addition, the trundle mattress must be firm: being close to the floor, a soft mattress collects moisture and deforms sooner. Verify that the size matches exactly the furniture manufacturer’s specification; 90×190 mattresses do not always fit 90×185 trundles.
4. Materials and finish
- Melamine-faced board or lacquered MDF: lacquered MDF withstands knocks better in children’s rooms; melamine is cheaper but chips at the corners.
- Emissions certification: look for class E1 or equivalent for formaldehyde, especially if the child sleeps in the same room.
- Water-based varnishes and paints: less odor when assembling and safer indoors.
5. Real use: when a trundle bed is NOT a good idea
It does not work well as a main bed for two children who use it every night: the trundle is too narrow and access is uncomfortable. Nor is it the best option if the room has thick carpet, because the wheels sink in and the drawer drags. And if the child is under 3 years old, a trundle pulled out at floor level is no substitute for a crib with high rails.
A specific case: in rooms with a radiator under the window, the trundle cannot be opened toward that side. It is worth drawing the drawer’s path on the floor before buying, including the space needed to make the bed.
6. Assembly and maintenance
- Check whether assembly requires two people; trundles with metal runners weigh more than they look.
- Check the runner screws every few months: it is the part that loosens most with use.
- Clean the wheels with a dry cloth; accumulated dust is the usual cause of the drawer no longer sliding.
According to documentation from children’s furniture manufacturers, the useful life of a trundle mechanism with daily use is around five years before it needs adjustment. It is not a guarantee, but it helps with planning.