This is how modern cleanrooms can be implemented safely and efficiently

To meet the increasing demands in cleanroom technology, modular system construction kits are available that can be flexibly expanded and adapted.

Especially small, walk-in cleanrooms are ideal for integration into existing production environments.

The profile X 8 240x40 1NO from item ensures, similar to a double-T beam in steel construction, minimal deflection of the ceilings.

The LED inset light 1200x300 was specifically developed for use in grid ceilings in cleanrooms and ensures uniform light distribution as well as glare-free illumination.

The base stand allows for precise leveling and ensures a stable ground anchoring.

The double leaf door 8 is suitable when wide or particularly tall passages are required in the cleanroom.

With the extensive portfolio, item enables custom constructions for numerous applications in cleanrooms.

Modular, walk-in clean rooms offer companies a practical and cost-effective solution to meet the highest requirements regarding cleanliness, freedom of movement, and adaptability. Especially in sensitive industries such as semiconductor manufacturing, medical technology, or optical industries, such room solutions play a central role in quality assurance and process stability.

With increasing product complexity and rising quality demands in more and more industries, the need for controlled manufacturing environments grows, where particle concentration and ambient conditions can be precisely regulated. At the same time, the requirements for designing these clean rooms are changing. Besides maximum cleanliness, flexibility and cost-efficiency are now the focus. Instead of large, permanently installed clean rooms, companies are increasingly seeking compact solutions that can be seamlessly integrated into existing production environments — for example, as modular units with a basic area of 2×2 or 6×6 meters. These small, walk-in clean rooms are particularly suitable as retrofits or expansions and offer a high degree of adaptability. The term “walk-in clean room” describes a fully enclosed room solution that can be entered — in contrast to open laminar flow systems or tent-like systems. An important aspect in the practical implementation of such room solutions is easy access to technical components for maintenance and service work. Filters, lights, and other ceiling components, for example, need to be checked and possibly replaced at certain intervals. Therefore, they are ideally accessible from above — via a walkable ceiling. Modular systems made of aluminum profiles provide a suitable basis for constructing clean rooms: They combine stability and safety with high variability and also enable easy assembly and expansion.

Requirements for modern clean rooms

The requirements for clean rooms vary depending on the industry but always aim to ensure manufacturing under controlled conditions to protect products from contamination and increase process reliability. Particularly high standards apply in the semiconductor industry, medical technology, and the production of optical products. In the semiconductor industry, for example, metallic contaminants — especially zinc — must be strictly avoided. Materials with high outgassing, such as PVC or certain silicones, are also critical because even tiny particles or molecules can disturb sensitive electronic components. The requirements for air purity are especially high here, often within ISO classes 1 to 5. In medical technology and pharmaceutical production, however, the focus is more on microbiological cleanliness. Here, GMP guidelines (GMP = Good Manufacturing Practice) apply, which include regular proof of sterility. The cleanliness of surfaces is also a crucial criterion — especially where isopropanol or other aggressive cleaners are used. The optical industry, in turn, has different requirements: Besides air purity, lighting is often a central issue, particularly during manual manufacturing steps or in quality control. Uniform, shadow-free illumination is necessary to recognize the finest details. A key aspect across all industries is achieving optimal airflow: the particle flow must be directed out of the process area, which requires a well-thought-out arrangement of filter fan units (FFUs). Modern clean rooms should also be easy to adapt to changing requirements. Flexibility and modularity are therefore essential criteria.

Solutions in modular system construction

To meet the increasing demands in cleanroom technology, modular system building blocks are recommended. Constructions based on aluminum profiles, such as those from item, have proven to be particularly flexible and practical. They can be customized and expanded later, or dismantled and reconfigured if needed — a clear advantage over rigid, conventional construction methods. Especially small, walk-in clean rooms are ideal for integration into existing production environments. They serve to selectively isolate sensitive processes. Often, these rooms also need to provide access to FFUs and lighting installed in the ceiling — for example, to change lamps, perform maintenance, or replace filters. The integration of maintenance-accessible ceilings is therefore often part of the concept.

Stable, safe, walkable — what cleanroom ceilings must do

Particularly in compact, modular clean rooms, walkable ceilings provide the necessary accessibility without disturbing ongoing operations inside. There are generally three variants: cantilevered, suspended, or supported by columns. While cantilevered ceilings do not require additional supports and allow an uninterrupted workspace, the suspended version is often chosen for larger units. Here, the ceiling is attached to existing hall structures to minimize deflection. Column-supported constructions are usually avoided, as they can restrict movement within the room and hinder production flow.

The technical implementation of such ceiling solutions is demanding — especially regarding safety and compliance with standards. The DIN EN 1991 standard for loads on structures must be considered. To give planners the necessary confidence, item has developed its own guidelines based on real load tests and static calculations. Typical scenarios, such as the use of multiple FFUs combined with two persons on the ceiling, have been taken into account. The supporting profile used is the X 8 240x40 1NO profile, which, similar to a double-T beam in steel construction, ensures minimal deflection even over large spans. Vertical walls also withstand the load, as do screw connections. For the construction of maintenance-accessible ceiling panels, DIN EN 1991-1-1 is the standard. It stipulates that walkable ceilings for maintenance purposes must withstand a minimum load of 1,000 N. Item’s ceiling panels, made from its components, have been tested in two series of experiments and withstood loads of up to 2,000 N. “With our guidelines, we provide the designer with the necessary safety,” explains Kevin Haas, Product Manager for Cleanroom at item. “If they adhere to the specifications, they can be confident that the ceiling will withstand the specified loads and avoid additional efforts for their own structural calculations.” In addition to the structural requirements, the targeted use of suitable components is crucial. For example, item offers appropriate edge systems and robust composite materials for constructing ceiling panels, which together form a system solution with high load capacity.

Suitable components for individual cleanroom solutions

Particularly important for building a functional cleanroom are tested components that convince both technically and hygienically. An example is the LED 1200x300 panel light from item, specifically developed for use in grid ceilings of cleanrooms. An opalized plastic cover ensures homogeneous light distribution and glare-free illumination. The light fixture meets the requirements of DIN EN ISO 14644-1 and is suitable for wet cleaning. It uses silicone-free, low-outgassing materials and antibacterial sealing and adhesive compounds — ideal for sensitive production areas in medical technology, pharmaceuticals, or semiconductor manufacturing. Another practical detail is the base leveling foot, which allows precise leveling and provides a stable floor anchoring — a crucial advantage for freestanding room structures. Additionally, item offers the double-leaf door 8, a solution for applications requiring wide or particularly tall passages, such as transporting large components or equipment. The door is based on the proven modular system and can be manufactured in custom dimensions. Depending on the need, only one leaf or both leaves can be opened. “Our customers appreciate that they can rely on a continuous, tested system — whether they want to realize a small test room or a complex cleanroom structure,” summarizes Kevin Haas. With its broad component portfolio, item offers not only technological diversity but also investment security: all parts are system-compatible, durable, and can be flexibly adapted to changing and continuously increasing requirements.