Steel mezzanines and lofts
Steel mezzanines and lofts are the fastest and most cost-effective way to double the usable surface of a warehouse, store, retail premises or office without major works. We design every platform to the intended use (storage, office, technical access) and deliver it certified for inspection and operating licence.
When a steel mezzanine is the right choice
A mezzanine makes sense when the premises have enough clear height (usually from 4.5 metres upwards) and you need more usable surface without extending the building. It is typical in logistics warehouses that grow without remodelling, in storage facilities that want to free up the floor for taller racking, and in retail premises that take advantage of the height to create offices, storage or a staff rest area.
Compared with major works (knocking down partitions, building a new floor), the steel mezzanine wins on lead time (days or weeks, not months), on cost (it does not require foundation reinforcement when properly calculated) and on reversibility (it is dismountable and reusable). The trade-off: you must comply with clear-height regulations under the mezzanine and obtain a municipal permit in most municipalities.
Types of mezzanines and lofts
Although they share a basic structure (columns, beams, flooring, stairs, railing), there are variations depending on the intended use:
- Mezzanine for static storage (boxes, light pallets): usually sized at 500–750 kg/m²
- Mezzanine for heavy storage (loaded pallets, materials): 750–1,000 kg/m² or more
- Loft for offices or changing rooms: 250–350 kg/m² with lightweight flooring and acoustic insulation
- Loft for a machine room or equipment: concentrated loads and vibration to be studied
- Technical access platform (installers, maintenance): 200–300 kg/m² and grating flooring
- Semi-self-supporting mezzanine resting on storage racking (rack-supported)
Upload drawings or describe your idea. We reply with a realistic quote in 48h.
Materials and construction solutions
The basic structure uses HEB columns or square hollow sections, IPE or HEA beams depending on span and loads, and a metal deck that carries the flooring. The flooring varies with the use: non-slip chequered plate for light industrial traffic, phenolic board for storage and office use, grating for technical access where you want light and ventilation to pass through, and composite deck with concrete when high rigidity or acoustic insulation is required for office use.
The stairs are designed for the use (straight, balanced, spiral, cat ladder when only for technical access) and are always fitted with a railing with handrail and kickplate, compliant with CTE-DB-SUA. Large mezzanines also incorporate loading points (loading gate with extendable barrier, unloading platform) to move material with a pallet truck or forklift up to the upper level.
- HEB columns and square structural hollow sections
- IPE / HEA beams or built-up beams for large spans
- Flooring in chequered plate, phenolic board, grating or composite deck
- Straight, balanced, helical or cat-ladder stairs
- Railings with handrail and kickplate per CTE-DB-SUA
- Loading gate with extendable barrier and unloading platform
- Anchoring onto an existing slab or onto a new deck
Project and installation process
The project starts with a technical visit to the premises to take measurements, assess the condition of the slab (the anchors transmit concentrated loads that the slab must support) and understand the intended use. From there we calculate the mezzanine, produce fabrication drawings and prepare a fixed quote covering materials, stairs, railings, flooring and installation.
Fabrication is carried out in the workshop in pre-assembled pieces when access allows. Installation is normally completed in one to three working days depending on the surface area, with the area sealed off and cleaned on completion. If the premises must stay operational, we plan the work by schedules or in phases.
Who it is ideal for
Mezzanines are a recurring solution for these profiles:
- Warehouses and logistics operators that want to gain usable surface without major works
- Mechanical or industrial workshops needing an office above the production area
- Retail premises with usable height for storage or an office
- Restaurants and bars that create a mezzanine for an office or an extra room
- Growing companies that need changing rooms or rest areas
Documentation and certification
Every mezzanine we deliver comes with a structural calculation report, as-built drawings, CE marking certificate and, when the client requests it or the council requires it, a certificate signed by a competent technician for the change of use or legalisation. This makes it easier to obtain the permit and pass the inspection for regulated activities.
Related services
These services are typically combined with mezzanines within the same project:
- Steel structures for industrial warehouses: We build industrial warehouses with steel structure: engineering, fabrication and turnkey installation for warehouses, workshops and logistics hubs.
- Steel fabrication and installation: Full-service shop fabrication and on-site installation of steel structures. In-house crews, EN 1090 certified welding and on-time delivery.
- Steel structure company: Specialist steel structure company for industry, construction and bespoke projects. In-house engineering, workshop and installation crews on staff.
- Steel structure pricing: How much does a steel structure cost: factors that drive price (m², kg, installation). Receive a realistic quote in 48h.
- Metal roofing: Design and installation of metal roofing for warehouses and buildings: sandwich panel, corrugated steel sheet, deck and replacement of old roofs.
Areas where we deliver mezzanines
We work all over Spain. If your project is in one of these cities, browse the local page for typical project types and area-specific notes: