Office Partition Walls – A Guide to Systems

The choice of partition system determines not only how the space is divided, but also the acoustic class of the rooms, compliance with fire safety requirements, and—increasingly important to investors—the ability to change the layout without costly renovations.

There are more than a dozen different solutions available: from lightweight drywall partitions to mobile and sliding systems, as well as glass acoustic partitions and certified fire-rated walls. Each has different technical specifications, applications, and installation requirements.

This guide organizes the selection process from a design perspective. Here you will find an overview of systems, key parameters for technical specifications, and decision criteria for typical applications in offices, hotels, universities, and conference centers.

What are partition walls, and what functions do they serve in commercial buildings?

A partition wall is an interior wall that divides the usable space of a building without carrying structural loads. In commercial buildings, it serves four basic technical functions.

• Space Division – fixed or flexible, depending on the system chosen. In Class A office buildings, flexibility is becoming a design requirement. Tenants come and go, and the floor layout must adapt to new needs.
• Sound insulation – measured by the Rw coefficient (weighted sound reduction index, PN-EN ISO 717-1 standard). For office partition walls, Rw ≥ 40 dB is typically required; for conference rooms, Rw ≥ 48 dB; and for spaces requiring complete confidentiality, Rw ≥ 52 dB.
• Fire compartmentation – expressed as fire resistance class EI (fire integrity + fire insulation, PN-EN 13501-2 standard). These requirements are based on technical and building codes and the facility’s fire protection design. The most common classes in commercial buildings are EI 30 and EI 60.
• Finish and Aesthetics – The partition wall system defines the look of the interior. The choice between CPL laminate, natural veneer, glass, or acoustic panels affects both the acoustics and the cohesiveness of the interior design.

In design practice, it is rare to optimize just one of these parameters. An architect must balance acoustic requirements with fire safety requirements, aesthetics with the client’s budget, and a rigid division of space with the need for flexible reorganization.

Types of Partition Walls – Classification by Application

Partition wall systems used in commercial buildings differ primarily in the degree of spatial flexibility they offer, their acoustic performance, and their installation requirements. Below is an overview of the main categories from a design perspective.

Mobile partition walls (sliding and folding)

Mobile partition walls are systems in which panels slide along a ceiling track—when extended, they form a complete partition; when retracted, they open up the space entirely or in any configuration. This solution is designed for venues where the layout of the space needs to be flexible: conference rooms, auditoriums, banquet halls, and exhibition halls.

The most important parameters to consider when selecting a mobile system are: the panels’ sound insulation (Rw), the maximum installation height, the method of sealing the bottom (pressure strip), and the ability to integrate with a fire protection system.

Optimal Poland manufactures several mobile systems that differ in design and purpose:

• OPTIMAL 110 – a basic system for standard office and conference applications
• OPTIMAL 110 Plus – an enhanced version with improved acoustic performance
• OPTIMAL 110 Plus ALU – aluminum profile, for high-end applications
• OPTIMAL 110 Sky – a system for high ceilings, auditoriums, and spaces with non-standard geometry
• OPTIMAL 50 – a compact system, smaller spans, and lower budgets

Our portfolio includes conference rooms at the Focus, Ibis Styles, and Gromada hotels; auditoriums at Maria Curie-Skłodowska University and the Łódź University of Technology; and the Lublin Conference Center—facilities of varying sizes and with different acoustic requirements.

Check out our mobile partition wall projects.

Mobile partition walls with acoustic rating

When the required sound insulation exceeds the standard specifications of a mobile system, systems with enhanced sound insulation are used. This is determined by:

• additional sound-dampening layers in the panel’s construction,
• a more elaborate perimeter seal,
• panel weight.

Optimal Poland offers mobile acoustic walls—see the available systems. This solution is particularly important when designing conference rooms in open-plan office buildings, where sound transmission between adjacent rooms is a critical design issue.

Mobile fire-rated partition walls

In buildings where the fire protection design requires fire compartmentalization, but the developer also expects spatial flexibility, the only solution is a movable fire wall. This is technically the most demanding type of system—it must combine the smooth operation of a sliding mechanism with certified fire resistance.

Optimal Poland manufactures the OPTIMAL 110 Plus Fire EI30 system, which has been certified by the Building Research Institute. It provides 30 minutes of fire resistance and thermal insulation.

Design Note: For specifications requiring EI 60 or higher, contact the manufacturer directly to verify the available certifications before incorporating the product into the design.

Glass partition walls

Glass partition systems are used wherever lighting the space and a sense of openness while maintaining physical separation. Typical applications include: executive offices, private offices in open-plan office spaces, reception areas, and reception areas.

Lightweight Permanent Partition Walls

Permanent partition walls—whether made of drywall, masonry, or prefabricated systems—are ideal for situations where the division of space is permanent and does not require flexibility. The lower upfront cost compensates for the inability to reconfigure the space without construction work.

Technical Specifications for Partition Walls – What to Look for in the Specifications?

Selecting a partition wall system that meets the technical specifications requires verifying several key parameters. The table below outlines what to check and where to find the relevant data.

Technical data sheets, ITB certificates, and BIM models for Optimal Poland systems are available on BIMobject.com. The platform allows you to download models directly into your project.

Partition Walls and Office Acoustics—What Should You Look For?

The Rw value listed in the system’s technical data sheet and the actual sound insulation performance of the installed wall are two different values. The difference stems from flanking transmission—sound travels not only through the partition but also through the ceiling, floor, and adjacent walls. Both components must be taken into account when designing office acoustics.

Typical Rw requirements for commercial buildings:

• Open-plan office with separate rooms – Rw ≥ 40 dB
• Conference rooms in office buildings – Rw ≥ 48 dB
• Executive offices, boardrooms – Rw ≥ 52 dB
• Rooms requiring complete confidentiality of conversations – Rw ≥ 55 dB

In hotel and academic facilities, acoustic requirements are also specified in the PN-B-02151-3 standard and should be verified during the construction design phase.

Three places where a movable partition loses its acoustic properties:

• Bottom seal. The automatic threshold drops when the panel closes and rests flush against the floor. Uneven floors, thresholds, and baseboards—any discontinuity acts as an acoustic bridge. Insist that the contractor prepare the floor before installation.
• Joint with the ceiling. The system must fit snugly against the suspended ceiling or floor slab—any gap reduces the Rw value by as much as several decibels. For modular ceilings, coordination with the ceiling system is necessary.
• The joint between the panels. Vertical joints between the components of a mobile system must ensure a continuous seal when the system is assembled. The quality of the sealing profiles is one of the key factors that distinguish budget-class systems from professional ones.

A movable or fixed partition—which one should you choose?

The decision between a mobile and a fixed system should be made during the design concept phase—changing this approach at a later stage usually requires significant adjustments to the budget and schedule.

When should you choose a mobile system?

A mobile system is a valid design choice when at least one of the following conditions is met.

• Flexible Use – the facility supports various spatial configurations depending on needs: a hotel combining banquet halls with conference rooms, a university combining lecture halls with exam rooms, and an office building with flexible leasing options.
• The facility’s versatility – The investor plans to lease the space to various tenants or host events of varying sizes. A movable partition allows a single space to function as a hall for 200 people or four separate conference rooms—without any construction work.
• Long-term investment horizon – The costs of a mobile system pay for themselves during the first major space reorganization. In facilities with a service life of ten years or more, flexibility has a measurable financial value.
• Fire Safety Requirements for Variable Seating Arrangements – The EI 30 mobile fire wall allows you to meet fire protection design requirements without sacrificing flexibility. It is a solution that no fixed system can replace while maintaining the functionality of the space.

When is a fixed partition the right choice?

A permanent partition wall remains a viable solution for permanent functional divisions that will not be altered throughout the building’s entire life cycle—corridors, stairwells, server rooms, utility rooms, and permanent offices. In these applications, the lower investment cost and simplicity of installation make a permanent solution the preferred choice.

In facilities where some areas require a fixed layout and others require flexibility— both technologies can coexist within a single project. Optimal Poland’s mobile systems are designed to integrate with typical permanent structures.

Mobile Partition Walls in Practice – Projects by Optimal Poland

The system’s technical specifications are ultimately verified on-site. Below are three projects completed by Optimal Poland in various types of commercial facilities—each presenting a different design challenge.

Hotels – Combining Banquet and Conference Rooms

Hotels are among the most demanding applications for movable partition walls. The system must operate reliably under heavy use, meet acoustic requirements for various space configurations, and—in 3- to 5-star facilities—fit seamlessly into high-end interior design schemes.

Optimal Poland systems have been implemented at Focus, Ibis Styles, and Gromada hotels—facilities of varying sizes and standards that combine conference and banquet functions. In all cases, the key requirement was the ability to quickly reconfigure the space between events without involving a technical crew.

Check out our hotel projects:

• Gromada Hotel
• Ibis Styles Hotel
• Agit Hotel

Colleges and Universities – Lecture Halls and Exam Rooms

Academic spaces must meet two conflicting requirements: large lecture halls seating several hundred people, and the ability to be flexibly divided into smaller seminar or exam rooms. A movable partition wall resolves this conflict—the lecture hall remains a lecture hall when needed and can be divided into separate spaces in a matter of minutes.

Optimal Poland has carried out projects at Maria Curie-Skłodowska University in Lublin and the Łódź University of Technology—institutions with intensive academic programs and diverse spatial needs. In academic facilities, sound insulation between classrooms is particularly important—conducting classes simultaneously requires that noise from an adjacent classroom not interfere with work.

Check out our projects at universities and schools:

• Lodz University of Technology – the tallest step wall, weighing nearly a metric ton, which can be easily operated by a single person.
• UMCS Lublin – a semi-automatic mobile wall nearly 6 meters high.
• Stapaskóli School in Njarðvík (Iceland) – improves acoustic comfort for students and staff thanks to its perforated surface.

Conference Centers – Scale and Certifications

Conference and exhibition centers are facilities where technical requirements reach the highest level of complexity. Large spaces, high ceilings, heavy use, and fire safety requirements stemming from regulations for public facilities—each of these factors influences the choice of system.

The Lublin Conference Center and the Lublin Trade Fair are projects completed by Optimal Poland in facilities of this class. Both projects required systems with a large panel span, significant installation height, and complete technical documentation necessary for final inspections in public facilities.

See our projects at conference and trade show centers:

• Lublin Trade Fair
• Lublin Conference Center

FAQ – Frequently Asked Questions About Office Partitions

Find answers to the questions investors and designers most frequently ask us when planning partition walls for office and commercial spaces.

Set up the system or contact us

Optimal Poland offers full technical support from the system selection stage through to installation acceptance. If you are designing a facility that requires movable, acoustic, or fire-rated partition walls, please contact our technical department or use our online configurator.

• Go to the configurator → optimalpoland.pl/configurator/
• View Projects → optimalpoland.pl/projects/
• Download BIM objects → bimobject.com/pl/optimalpoland
• Contact us → optimalpoland.pl/contact/