By the BondageBox editorial desk, reviewed 26 September 2026. BondageBox designs bondage furniture and has it built to our drawings by a UK partner workshop, so this is a category we sell. Every price below is our own published rate, current at the date of review, and matches the figure our quote builder would give you. Treat it as a disclosed price list rather than neutral market research.
Six measurements decide whether a piece of bondage furniture fits: ceiling height, floor footprint, clearance around it, the narrowest point on the route in, the floor construction and the wall construction. Only the first two are obvious. The one that causes actual problems is the fourth, because a frame that fits the room perfectly is no use if it will not turn at the top of the stairs.
The six measurements
1. Ceiling height
Measure floor to ceiling in the exact spot the piece will stand, not in the middle of the room. UK ceilings in newer housing are often close to 2.4 metres, and older properties vary far more than people expect. A full-height St Andrew's cross stands around 2,120mm, so 2.4 metres gives you comfortable clearance and 2.2 metres is workable. Anything under that and the cross should be built shorter, which is a design decision rather than a problem.
If you are considering a suspension frame, measure to the underside of any joist, beam, light fitting or coving in the path, not to the highest point of the ceiling.
2. Floor footprint
Mark the footprint on the floor with tape before you commit. Typical footprints:
| Piece | Typical footprint | Height |
|---|---|---|
| St Andrew's cross, free-standing | 1,000mm × 860mm | 2,120mm |
| St Andrew's cross, wall-mounted | 1,000mm × 200mm | 2,120mm |
| Spanking bench | 1,200mm × 600mm | 750mm to 900mm |
| Kneeler | 600mm × 450mm | 500mm |
| Bondage bed frame, double | 2,000mm × 1,500mm | Bed height |
Tape is better than arithmetic here. A footprint that reads as small on paper often turns out to sit exactly where a door swings.
3. Clearance around the piece
This is the measurement most people miss. A cross needs someone to be able to walk around it, and a bench needs standing room on the working side. Allow 600mm of clear floor on any side that gets used and 300mm on sides that do not. For a free-standing cross that means the real floor area is closer to 2.2 metres by 1.5 metres than the 1 metre by 860mm the frame occupies.
4. The route in
Measure the narrowest point between the front door and the room: door widths, the turn at the bottom and top of the stairs, the landing, and the diagonal through any doorway. A standard UK internal door is 762mm. The limiting factor is almost never the door width, it is the diagonal clearance on a stair turn.
A 2,120mm welded frame will not negotiate a typical UK staircase in one piece. That is the reason a demountable or folding build exists, and it costs £140 rather than the alternative, which is a piece that lives in the garage.
5. Floor construction
Solid concrete takes any load without thought. Suspended timber floors, which is most UK upstairs rooms and a lot of Victorian ground floors, flex. That matters for a suspension frame or any piece where dynamic load is involved, and it is worth positioning heavy pieces over or near a wall where the joists are supported rather than in the middle of a span.
Also note the floor finish. Castors need hard flooring. Feet on an unprotected timber floor need pads.
6. Wall construction
Only relevant for wall-mounted pieces, but decisive. Tap the wall. A solid masonry wall sounds dull and takes a properly specified anchor. A stud wall sounds hollow between studs, and a fixing must land on the studs themselves, with the load spread across at least two of them. UK studs are usually at 400mm or 600mm centres. If you are unsure what you have, that is a question for whoever fits it, and fixings into masonry or concrete should follow BS 8539.
Rooms that do more than one job
A spare bedroom that is also where guests sleep changes the brief rather than ruling it out. Three things make a piece disappear: a demountable build that lifts off its fixings, leather components that come away so the frame reads as a frame, and concealed anchor points on a bed instead of visible hardware. Those choices cost £140, nothing, and £120 respectively, and they are the difference between a piece you can own and one you cannot.
What to send with your brief
You do not need a technical drawing. A phone photograph of the wall or corner, plus the ceiling height and the narrowest point on the way in, answers most of what we need. If you do not know a measurement, say so and we will suggest a size rather than ask you to guess.
Frequently asked
- Q: What ceiling height do I need for a St Andrew's cross?
- Around 2.2 metres as a minimum for a full-height cross of roughly 2,120mm, and 2.4 metres for comfortable clearance. Below that the cross can be built shorter without losing function, which is a normal design change rather than a compromise.
- Q: How much floor space does bondage furniture actually need?
- More than the footprint. Allow 600mm of clear floor on every side that gets used. A free-standing cross occupying 1,000mm by 860mm realistically wants about 2.2 metres by 1.5 metres of room. A wall-mounted cross only projects about 200mm, which is why it is the usual answer in a small room.
- Q: Will a cross fit up my stairs?
- In one welded piece, usually not. A 2,120mm frame cannot turn on a typical UK staircase. Demountable and folding builds exist for exactly this reason and add £140. Measure the diagonal clearance at the stair turn, not the door width.
- Q: Can I put a suspension frame in an upstairs room?
- Often yes, but the floor construction matters. Suspended timber floors flex under dynamic load in a way solid concrete does not. Position the frame near a supporting wall rather than mid-span, and if you are taking a point from the ceiling structure rather than using a free-standing frame, that is a question for a structural engineer, not a furniture maker.
- Q: I do not know my measurements. Can you still quote?
- Yes. Say so on the brief and we will suggest proportions based on who is using the piece and what the room is for. The sketch you approve carries the final dimensions, so nothing is built to a guess.
Sources & further reading
- BS 8539:2012. Code of practice for the selection and installation of post-installed anchors in concrete and masonry. British Standards Institution.
- Approved Document A, Structure. Building Regulations for England, covering floor and ceiling loading. gov.uk
- Approved Document K, Protection from falling, collision and impact. Includes the standard guidance on stairs and headroom that determines what will and will not turn on a domestic staircase. gov.uk
- BondageBox house piece specifications, Double St Andrew's Cross and Folding St Andrew's Cross, measured 2026.
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