Steel mezzanine floors

Steel platforms with grating floors, stairs and handrails in an industrial plant

The space you already paid for and don't use

The scene repeats itself. The warehouse is packed to the ceiling, somebody looks up and sees five meters (16 ft) of empty air. You already paid for it. With the building. A steel mezzanine turns that air into square feet: a new floor halfway up, with no construction work and no move.

At Indumor we fabricate them to fit the space and the use, and we erect them. They are freestanding: their own columns on floor base plates, never hanging off the building structure, which almost never has reserve capacity for that. And if they are bolted, they can be taken apart and moved.

Quote my mezzanine

Where a mezzanine pays off

Storage and picking

One more level for light or fast-moving goods, with a pallet gate to load it by forklift.

Offices over the floor

The engineering or supervisor's office upstairs, overlooking production, without taking space from the shop floor.

Locker rooms and break rooms

Staff facilities up high, when there is no room left downstairs.

Archives and shelving

The highest loads: full shelving or archives, with deck and columns designed for 500 to 1,000+ kg/m² (100 to 200+ psf).

Why steel and not a concrete slab? Because there is no wet work: no formwork, no shoring, no weeks of curing with the warehouse in use. The parts arrive cut and drilled and go up dry; with a phenolic or grating deck, the mezzanine is in use as soon as erection is done. It weighs far less than an equivalent slab, so the footings are smaller. And if it is bolted, it moves with you.

Everything to decide up front

A mezzanine turns out right or wrong before the first plate is cut. Almost every problem that shows up later — a deck that bounces, a stair that does not fit, goods with no way up — comes from something that was not decided in time. This is the list we work through on every project. It is not short.

  • Use and design load. The first decision, and it rules all the others: light storage and picking, 300 to 500 kg/m² (about 60 to 100 psf); engineering offices or locker rooms, 300 to 400 (60 to 80 psf); archives or heavy shelving, 500 to 1,000 or more (100 to 200+ psf).
  • Area and columns. Where the columns can land without blocking traffic below, and how far apart.
  • Clear height. Below, for people, racking or forklifts; above, up to the roof or the trusses.
  • Deck. Phenolic plywood over steel joists for offices, composite steel deck with a concrete topping for heavier loads, or grating when light and air need to get through.
  • Access. A stair, and if goods go up by forklift, a pallet gate with its guardrail.
  • Guardrails along every open edge, with mid-rail and toe board.
  • The existing slab. Each column is a point load: we need to know what slab is underneath to size the base plates.
  • Fixed or removable. Bolted, it can be taken down and moved if you relocate.
  • Schedule and operations. If the warehouse cannot stop, erection is planned to work around it.

With that settled, timelines are short. The proposal comes out in days, from your drawings or a site survey; fabrication takes 2 to 4 weeks depending on the area, and erection takes days, often without stopping your operation. What we quote is the complete mezzanine: structure, deck, stair, guardrails and, if needed, the pallet gate, erected and ready to use. No surprises at the end. If you also need stairs, walkways or a work platform, see platforms, stairs and walkways.

Frequently asked questions

Whatever it is designed for: the load is declared at the start and everything is calculated from it. As a reference, light storage calls for 300 to 500 kg/m² (60 to 100 psf); offices, 300 to 400 (60 to 80 psf); archives or heavy shelving, 500 to 1,000 or more (100 to 200+ psf).
No. It has its own columns on floor base plates. The building structure almost never has reserve capacity to carry another floor.
Proposal, days. Fabrication, 2 to 4 weeks depending on the area. Erection, days, often without stopping operations.
Yes, if it is bolted. It comes apart piece by piece, gets shipped and goes back up somewhere else.

How many square feet are sitting over your head, unused, right now?

Tell us the use and the area, and we will put the proposal together. Or email tecnica@indumor.com.