How to Choose the Right Bunk Bed for Your Space

The right bunk bed for your space is the one whose footprint, height and access suit the room you actually have. Measure the floor area, the ceiling height and the clearance around doors, windows and radiators, then match those figures to a bed type: a standard bunk for typical bedrooms, a low bunk for limited headroom, an L shaped bunk for wide rooms, a triple bunk for tall ceilings, and a bunk with a trundle when you need an extra bed without extra height.

Getting the measurements right first saves a great deal of second guessing later. Our modern bunk beds UK sale range covers each of these configurations, and they sit within our wider bedroom furniture UK collection. Here is a methodical way to work out which one belongs in your home.

Step one: measure the room properly

A tape measure, a notepad and ten minutes are all you need. Record the following:

  • Wall length along each wall where a bed could realistically go.
  • Room width from that wall to the opposite side, so you know how much floor will remain in front of the bed.
  • Ceiling height, taken at the spot where the bed would stand, not just in the centre of the room.
  • Door swing, including how far the door opens into the room.
  • Window position, sill height and the direction any sash or casement opens.
  • Radiator, socket and light switch locations.

Sketch these onto a simple floor plan. It does not need to be to scale, but it should show where each obstacle sits. That plan will rule out some bed positions immediately and make the others obvious.

Step two: work out the footprint you need

Most bunk beds take a UK single mattress, 90cm by 190cm, so the frame footprint is usually a little larger, depending on the design. Add to that the space needed to use the bed:

  • Room to stand beside the lower bunk to make it up and get in and out.
  • Space at the ladder end, or along the side if the ladder is side mounted.
  • Clearance in front of any underbed drawers so they can open fully.
  • Extra space at the foot or side if the design has a staircase rather than a ladder.

Once you know the full working footprint, check it against your plan. It is often the ladder or the drawers, not the bed itself, that cause the problem.

Step three: check the headroom

This is the most important figure and the easiest to get wrong. The measurement that matters is the distance between the top of the upper mattress and the ceiling, not the overall height of the frame. Find the frame height to the top bunk base in the product details, add the mattress depth, and subtract that total from your ceiling height.

A child should be able to sit up on the top bunk without touching the ceiling. Older children and adults need more space still. Watch for pendant lights, smoke alarms and sloping ceilings, all of which reduce usable headroom in particular spots.

Check headroom on the lower bunk too. The gap between the lower mattress and the underside of the top bunk should allow the lower sleeper to sit up comfortably.

Step four: match the room to a bed type

Standard bunk beds

One single stacked directly above another. They have the smallest footprint and suit most typical UK bedrooms with standard ceiling heights.

Low bunk beds

A reduced overall height, which leaves more space above the top bunk. They suit loft rooms, flats with lower ceilings and households where a lower climb is reassuring. The usual top bunk age guidance still applies.

L shaped bunk beds

The top bunk sits at right angles to the lower one, often with storage or a desk in the space created. These need a wider room and a corner, but they feel more open and give each sleeper a little more privacy.

Triple bunk beds

Three tiers for three sleepers. These need generous ceiling height and are usually best suited to older properties with tall ceilings or purpose built bunk rooms.

Bunks with trundles

A third bed slides out from beneath the lower bunk. This adds sleeping capacity without adding height, but you need clear floor in front of the bed to pull it out.

Split bunks

Two single beds that stack and separate. They are a good choice when you are unsure how the room will be used in a few years’ time.

Step five: plan the ladder and the door

Ladders can usually be fitted at one end or on one side, and many designs are reversible. Choose a position that does not block the door, does not sit in front of a radiator and leaves a clear landing at the bottom. If children will climb down at night, the route from the ladder to the door should be short and unobstructed.

Avoid placing the bed where the door opens into the ladder or the side of the lower bunk. Even a gentle knock from a door can be unsettling for a child on the ladder.

Step six: think about light and air

The top bunk should not sit directly beside a window, both for safety and because blinds and curtains become harder to use. Keep the bed clear of blind cords. If the only workable position puts the bed near a window, check that the window has restrictors and that the top bunk is not within reach of the opening.

Bunks can make a room feel darker, particularly the lower bunk. A pale frame, light bedding and a reading light for each sleeper help considerably.

Step seven: add furniture around the bed

Once the bed position is settled, plan the rest of the room around it. Each sleeper benefits from a surface beside the bed. Our children’s bedside tables UK are scaled for shared rooms, while clip on shelves serve the top bunk. If the children will grow out of bunks, it is worth noting the frames in our children’s beds UK sale section, as some rooms eventually suit two singles or a cabin bed instead.

Storage should fit around the bed’s working footprint, not inside it. For ideas on organising a family bedroom with limited floor, our guide to children’s bedroom storage furniture for UK family homes covers wardrobes, chests and toy storage that work alongside a bunk.

Common mistakes to avoid

Most bunk bed regrets come from a handful of predictable oversights. Knowing them in advance makes it easy to sidestep them.

  • Measuring the frame instead of the headroom. The overall height of a bunk tells you little. The space above the top mattress is what decides comfort.
  • Forgetting the ladder. A bed that fits along a wall can still be unusable if the ladder blocks the door or lands on a radiator.
  • Ignoring drawer clearance. Underbed drawers need open floor in front of them. In tight rooms, a bed without drawers plus separate storage can work better.
  • Choosing for today only. Children grow quickly. A frame that suits a six year old may feel cramped for a teenager, so think a few years ahead.
  • Using a mattress that is too deep. This reduces the effective height of the guard rail on the top bunk.
  • Overlooking the route into the room. Long boxes need to travel up stairs and around corners before assembly.

It also helps to involve the children. Letting them see the plan, choose bedding colours and agree who sleeps where tends to make the transition to a shared bunk room smoother.

Safety checks before you decide

Whatever type you choose, check that it complies with BS EN 747, the standard for bunk beds sold in the UK. Guard rails should run along both long sides of the top bunk, with an opening only at the ladder. The top bunk is not recommended for children under six, and mattresses should be no deeper than the manufacturer’s maximum. Confirm the maximum user weight for each bunk if older children or adults will use it.

Putting it all together

Choosing a bunk bed becomes much simpler once you treat it as a measuring exercise first and a style decision second. With a clear plan of the room, a calculated headroom figure and a sense of how the space will change, the right configuration usually stands out. For the frame, the mattresses and everything else a shared room needs, visit Furniture in Fashion, where we offer free delivery to most UK mainland postcodes.

Common questions

How much space do I need above a bunk bed?

Enough for the top sleeper to sit up comfortably without touching the ceiling. Measure from the top of the upper mattress, not from the frame.

What is the smallest room a bunk bed can fit in?

A bunk bed has roughly the footprint of a single bed, so any room that fits a single bed and leaves space to stand beside it can usually take a standard bunk.

Is an L shaped bunk bed better than a standard one?

It feels more open and offers useful space beneath the top bunk, but it needs a wider room and a free corner.

Where should the ladder go on a bunk bed?

Choose a position away from the door swing and radiators, with a clear landing at the bottom and a short route to the door.

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