Double-decker stalls: the complete guide

What a double-decker stand really gives you

A double-decker stand does one thing: it gives you a second floor of area without a second floor of floor rental. For an exhibitor whose ground-floor plan is being eaten alive by meeting rooms, that is a genuinely attractive proposition — the meetings move upstairs and the whole of the ground floor goes back to being display.

It gives you a second thing too, which exhibitors rarely plan for but always benefit from: a vantage point. A mezzanine looking down over the hall is a place to take an important buyer, and the stand itself becomes a landmark that people use to navigate the hall.

What it does not give you is cheap area. The structure, the staircase, the engineering, the approvals and the longer build all cost real money, and they consume plan space that a single-storey stand would have used for display. The decision has to be made on what the upper floor is for, not on the per-square-metre arithmetic.

When it makes sense, and when it does not

The clearest case is a large stand where meetings are a stated objective. Our default planning ratio puts a meeting corner at 5% of the area, but a stand that exists to host buyers needs closer to 20%. On a 100 sq.m plot that is 20 sq.m of your display area gone — which is exactly the area a mezzanine can replace.

It stops making sense quickly as the footprint shrinks. Below roughly 50 sq.m the staircase and the structural columns take such a large share of the plan that the ground floor becomes cramped, and a cramped ground floor loses you more visitors than an upstairs lounge gains you.

The structure, and what it costs you in plan

A mezzanine is a real floor carrying real people, and it is engineered as such. The load path runs from the deck through beams into columns and down to the hall floor, and every one of those elements occupies space your layout was hoping to use.

The staircase is the item exhibitors consistently underestimate. A comfortable, code-respecting stair with a landing takes a meaningful bite out of the ground floor, and putting it in the wrong place ruins circulation. Tucking it against a closed side, rather than near the open aisle, is almost always right.

Because of all that, a double-decker stand is priced per project rather than at a per sq.m rate. The structural design, the engineer's certification, the heavier material, the longer install and the dismantle of a loaded frame are specific to the layout and the hall, and a generic rate would be misleading.

Approvals: what organisers ask for in writing

No organiser lets a two-storey stand onto the floor on the strength of a render. Expect to submit a documented package and to have it reviewed, queried and re-submitted at least once. Build that review cycle into your schedule, because it is the part of the process you control least.

The exact list varies by venue, but the shape of it does not. Plans and elevations with dimensions, structural drawings, a load calculation, a certificate from a qualified structural engineer, material fire-retardant certificates and an electrical load statement cover most requirements.

Planning the build window

A single-storey stand needs three weeks from sign-off, four from 24 sq.m and five from 54 sq.m. A double-decker is almost always in the largest of those brackets by definition, and the structural approval cycle sits in front of that rather than inside it.

The on-site sequence is also longer. The frame goes up first and has to be checked before anything is loaded onto it; only then do the deck, the staircase, the balustrade and the finishes follow. That is a materially longer build-up than a single-storey stand of the same footprint, so confirm your build-up hours with the organiser before you commit to the design.

Designing the upper floor so it gets used

The commonest failure of a two-storey stand is an upper floor nobody goes to. If the only route up is a staircase behind the storage with no signal at the bottom, visitors will assume it is staff-only, and your most expensive square metres will sit empty for three days.

Fix it with intent rather than signage. Make the stair visible from inside the stand, put something at the top that is worth the climb, and have a named person whose job is to take people up. If the upper floor is genuinely private, say so clearly at the bottom and use the space for the meetings it was built for.

Think about comfort as well. Heat rises, the hall's air handling rarely reaches a mezzanine, and a glass-walled lounge above a lighting rig gets uncomfortable fast. Plan air movement, keep the lighting up there cool-running and give people somewhere to sit.

An upper floor that visitors do not climb is the most expensive storage space at the show.

The questions to ask before you commit

A two-storey stand is the point where the quality of your fabricator stops being a matter of finish and becomes a matter of safety. These are the questions worth asking before you sign, and a good partner will have ready answers to all of them.