What Size Bed Suits an Attic Bedroom?

In most British loft conversions a double bed at 135cm by 190cm is the largest size that works comfortably, and in narrower attics a small double at 120cm wide is the more realistic choice. The limiting factor is rarely floor area. It is the height of the ceiling at the point where you sit up, and the position of the roof slope relative to the walkway.

That is the direct answer. The longer answer depends on where the slope falls, where the dormer sits and how the stairs arrive in the room, so it is worth working through the space methodically before settling on a size.

Measure Height Before You Measure Floor

Stand in the attic and hold a tape measure at the height of your shoulders while sitting. Around 90cm above mattress level is the clearance most people need to sit up in bed without ducking. Walk the length of the room and note where that clearance disappears. The line where the ceiling drops below roughly 140cm is the practical edge of the usable bedroom, even though the floor continues beyond it.

Everything under that line still has value. It is excellent for storage, for a low chest or for the foot of the bed. What it cannot do is host the head of the bed or a walkway, and planning as though it can is how attic bedrooms end up feeling cramped.

Bed Sizes and How They Behave Under a Slope

A single at 90cm by 190cm fits almost any loft and can be tucked lengthways under the slope with the head against the gable wall. This arrangement frees the centre of the room and works well for a child’s attic room or a small guest space.

A small double at 120cm gives two people enough width to sleep without the frame dominating the floor. It is the size most often overlooked and frequently the one that resolves an awkward loft. Our range of small double fabric beds UK includes low headboard designs that sit neatly beneath a slope.

A standard double at 135cm suits lofts with a dormer or a generous central ridge. It needs a clear run of around 195cm in length plus a walkway, so measure the full external frame rather than the mattress.

A king size at 150cm is possible in a large loft conversion with full height walls at either side, but it is the exception. In a typical roof space the bed ends up pushed against both slopes, which makes the bed difficult to make and the room difficult to move through.

Where to Place the Bed

There are three workable positions in most attics. Against the gable wall, which gives full height at the headboard and is usually the most comfortable. Under the slope lengthways, which suits singles and small doubles and keeps the centre of the room open. Or centred beneath the ridge, which gives headroom on both sides but uses the most floor.

If there is a dormer window, placing the bed to face it rather than beneath it usually gives a better result. Beds under dormers catch condensation from the glass in winter and morning light earlier than most people want.

Consider the stairs as well. A loft staircase often arrives in the middle of a wall, breaking the room into two zones. Place the bed in the larger zone and use the smaller one for storage or a chair.

Frame Height Makes More Difference Than Frame Size

A low frame changes an attic bedroom completely. Dropping the mattress height by fifteen centimetres gives back fifteen centimetres of sitting clearance, which is often the difference between a room that works and one that feels oppressive. Low platform frames, slatted designs with short legs and frames without a footboard all help.

Headboard height follows the same logic. A tall padded headboard against a sloping ceiling simply will not fit, and forcing it means angling the bed away from the wall and losing floor. Choose a low headboard, a wall mounted padded panel or no headboard at all. Browse the full modern beds UK sale and filter by headboard style, since this single detail determines more than the size does.

Mattress Access and Turning

Attic rooms make mattress handling harder. Before choosing a size, think about how you will turn or rotate it, and whether it can be carried up the loft stairs at all. Rolled mattresses solve the delivery problem neatly, since they arrive compressed and expand in the room.

Leave enough space at the foot or along one side to slide the mattress out. Sixty centimetres of clear floor on one long edge is the working minimum, and it also gives you room to change bedding without climbing across the bed.

Storage Under the Eaves

The low sections either side of a loft are the most valuable storage in the house, provided you treat them as storage and not as leftover space. Low chests, pull out boxes on castors and eaves cupboards with hinged doors all use the height efficiently. A tall wardrobe rarely fits, so look at low hanging rails or a chest with a short hanging section.

An ottoman bed is worth serious thought in a loft, because it converts the whole footprint of the bed into storage without taking any extra floor. Check the lift clearance first, since the base rises high and a slope directly above the bed can obstruct it. Our modern ottomans UK sale and storage frames list the lift height, which makes this easy to confirm.

Light, Air and Comfort

Lofts run warm in summer and can feel stuffy at night. A roof window that opens is worth more than any amount of fan. If the room has one, place the bed where it catches the cross draught rather than in the still corner.

Keep the palette light on the sloping surfaces. Painting the slope the same colour as the walls blurs the join and makes the ceiling read as higher. Dark colours on a slope pull it downwards visually, which can be atmospheric in a large loft and claustrophobic in a small one.

Lighting should be low and local. Wall lights or clip lamps avoid the pendant fitting that everyone in a loft eventually walks into. If you are pulling the room together, the bedroom section at Furniture in Fashion covers frames, low storage and lighting in one place.

A Simple Planning Method

Mark the bed footprint on the floor with masking tape, including the frame rather than just the mattress. Live with the tape for a day. Walk the route from the stairs to the window, open the wardrobe doors, sit where the pillows would be. Most sizing mistakes reveal themselves within an hour of doing this, and it costs nothing.

If the tape shows the walkway falling below sixty centimetres, step down one bed size rather than trying to make it work. An attic bedroom with room to move always feels larger than one with a bigger bed jammed into it.

Matching Storage to the Frame

Keep the bedside furniture low and shallow. A cabinet around forty centimetres deep sits under most slopes without contact, and a wall shelf works where even that is too much. Consistency helps: repeating one timber tone or one paint colour across the low pieces makes a broken room shape feel deliberate. Our wooden bedside cabinets UK sale includes compact designs suited to eaves positions.

Insulation, Sound and Sleeping Comfort

Loft bedrooms sit directly beneath the roof, so they respond to outside temperature faster than rooms lower in the house. In summer the space warms quickly in the afternoon and holds that heat into the evening. In winter it can lose warmth overnight if the insulation is thin.

Bed position can help. Keeping the head of the bed away from the coldest external wall and away from directly beneath a roof window reduces the sense of draught. A rug beneath the frame adds a layer between the mattress and a cool floor, and heavier bedding in winter with lighter cotton in summer handles most of the swing.

Sound is the other factor. Rain on a roof window is pleasant for some and disruptive for others, and loft floors transmit footfall from the room below. A dense rug, fabric at the window and soft furnishings all absorb sound, which is one of the reasons upholstered frames often feel more comfortable in a loft than hard timber ones.

Condensation deserves attention too. Warm air rises through a house and collects at the top, so ventilate the room daily even in cold weather. A few minutes with the roof window open makes a measurable difference to how the bedding feels at night.

Frequently Asked Questions

Can I fit a king size bed in a loft conversion?
Only in a large conversion with full height walls on both sides of the bed. In a standard roof space a double or small double leaves a usable walkway and makes the room far easier to live in.

How much headroom do I need above the bed?
Around 90cm above mattress level lets most adults sit up comfortably. Measure at the exact position of the pillows rather than at the centre of the room.

Should the bed go under the slope or against the flat wall?
Against the full height gable wall is usually the most comfortable. Placing a single or small double lengthways under the slope is a good alternative when it keeps the centre of the room clear.

Do low beds really help in an attic?
Yes. Lowering the mattress height directly increases sitting clearance and makes the ceiling feel further away. It is the most effective change you can make without altering the structure.

What is the best storage for the eaves?
Low chests, boxes on castors and short hanging rails use the height efficiently. An ottoman bed adds capacity without using extra floor, provided there is clearance above the base for the lift.