U
Planning to build a bunk bed in an alcove, which I would prefer to have "floating" without legs, but I don't want it to collapse, so I'm wondering if it's possible? Two of the walls, the left and back, are framed with tongue and groove boards, the right one is framed but probably some kind of sheet material.

The bed will be 190cmx120cm, and have 15mm plywood as the bottom, and then a foam rubber mattress. It should withstand an adult making the bed/child jumping.

If I build a support beam as in the picture, with say 45x90 timbers, can I manage without legs if I attach it to the studs?

Drawing illustrating a floating bunk bed structure in a corner alcove, with red lines demonstrating support beams on left and back walls.
 
F
It works well to screw beams to the wall and place a bottom on top. 45x90 is an unnecessarily coarse dimension, look at how a store-bought bed is constructed. You could make a frame of planed pine, where you screw a strip at the bottom edge on which you can place a slatted base instead, where you then place the mattress. Here I have used approximately 140x22mm. Slatted base from Ikea, it's more comfortable to lie on a slatted base than plywood. Bunk bed frame with slatted base and mattress in a small room, showcasing homemade wooden construction with wall-mounted corners. Wooden bed frame with slats, attached to a wall, designed for a slatted bed base. Visible screws and wall pattern.
 
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hapazard
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S
you have received good answers, I want to agree that it is definitely better to have a slat base/equivalent that allows the mattress to ventilate, rather than a full board under the mattress.
 
U
Nice! Thanks for the response. The idea of skipping the slatted base was mostly memories from when I was little and the person in the lower bunk would brace and push up the slats. But I guess I'll have to screw them on instead.
 
U
F fredrik.johansson said:
It's fine to screw studs to the wall and place a bottom on top. 45x90 is an unnecessarily thick dimension; look at how a purchased bed is constructed. You could make a frame out of planed pine, where at the bottom edge you screw a list that you can lay a slatted base on instead, which you then place the mattress in. Here I have used approximately 140x22mm. Slatted base from Ikea, it's nicer to lie on a slatted base than plywood.[image][image]
What dimension do you have for the list?
 
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