The Movable Wall Bible

A movable wall is a system of panels that divides an interior space into separate rooms and can be re-opened when a larger space is needed — without building a permanent wall. The panels run on an overhead track (or, for some glazed systems, a floor track), and stack neatly to one side when open. You will also hear them called operable walls, movable partitions, sliding partitions and folding partitions.

Terminology varies between manufacturers and specifiers, but the underlying idea is consistent — a flexible, reconfigurable division of space. The main variations are:

• Movable / operable walls — individual panels moved along a track and stacked away.
• Movable partitions — the same principle, described in partitioning terms.
• Sliding partitions — panels that slide rather than fold.
• Folding partitions — hinged panels that concertina together.
• Acoustic movable walls — systems engineered specifically for sound insulation between rooms.

The benefit in every case is flexibility: a single space can serve as one large room or several smaller ones and change through the day. Typical applications include dividing offices into meeting rooms, splitting school halls into classrooms, and subdividing hotel and conference suites. Explore the full ModernGlide MG Series range of movable wall systems.

Individual panels hang from carriers (trolleys) that run inside an overhead track fixed to the structure. Each panel is moved into position to close the opening, then top and bottom seals are extended to complete the acoustic line and jamb seals close the ends. When the wall is opened, the panels travel back along the track to a stacking area.

The key components of a movable wall system are:

The main types are solid acoustic movable walls, folding partition walls, glazed folding walls, and individually operated glazed movable walls. Solid systems prioritise sound insulation; glazed systems prioritise natural light and visual connection. Folding systems concertina together, while sliding systems move panels individually along a track.

Choose a solid acoustic wall when sound insulation and visual privacy are the priority, and a glazed system when natural light and visual connection matter. Solid systems reach the highest acoustic ratings; glazed systems trade some acoustic performance for light and openness. Many projects use both in different areas of the same building.

Are glass movable walls soundproof? No movable wall is fully soundproof, but glazed systems can provide genuine meeting-room privacy — the MG600 reaches Rw up to 50 dB. Where the acoustic target is very demanding, a solid system such as the MG100 will outperform any glazed option.

Top-hung walls hang from an overhead track fixed to the structure above, keeping the floor completely clear with no floor track. Floor-supported walls carry their operating weight through the floor, with head restraint at the top. Top-hung suits most projects; floor-supported suits certain frameless glazed folding systems and situations where suitable overhead structure is limited.

Panels are suspended by single-point or two-point carriers and routed along the track to a stacking area. Common stacking arrangements are centre stack, end stack, remote / parking-bay stack and recessed pocket stack, plus single-wing, bi-parting and folding configurations. The stacking layout must be designed into the floor plan from the outset.

A movable wall's acoustic performance is described by its Rw rating — a laboratory measure of airborne sound insulation. On site, the sound insulation actually achieved between rooms (DnT,w) is usually lower, because sound also travels around the wall through the ceiling, floor, services and adjacent construction. The whole build-up matters, not just the wall.

What does dB mean?

The decibel (dB) is the unit used to measure sound levels and sound insulation. In acoustic insulation, a higher dB figure means more sound is stopped.

What is Rw?

Rw (Weighted Sound Reduction Index) is a single-figure laboratory rating of a building element's airborne sound insulation under standard test conditions.

What is DnT,w?

DnT,w is the field-measured sound insulation between two finished rooms, accounting for the actual construction and flanking paths. It is what occupants really experience.

Laboratory vs site

Laboratory Rw tests the element in isolation. Real rooms have ceilings, floors, glazing and services that let sound bypass the wall, so site figures are typically lower.

Why Rw 50 dB does not automatically mean 50 dB between rooms

Sound finds the weakest path. Even a high-performing wall will underperform if noise flanks around it. The common flanking paths to control are:

• Ceilings — sound passing over the wall through a continuous suspended ceiling void.
• Floors — transmission through a continuous floor or raised access floor void.
• Doors — pass doors and adjacent doorsets that are lower-rated than the wall.
• Glazing — glazed elements alongside the wall.
• HVAC — shared ductwork and diffusers bridging the two rooms.
• Service penetrations — cable, pipe and containment routes through the line of the wall.
• Adjacent partitions — junctions with permanent walls that are not detailed for acoustics.

For a deeper treatment of ratings and seals, see our acoustic performance guide and the MG100 acoustic movable wall.

ModernGlide movable walls span from light glazed screening at Rw 33 dB to high-performance solid systems at Rw up to 59 dB. The figures below are the maximum laboratory ratings for each system; the appropriate rating for your project should be confirmed against the intended use and surrounding construction.

Figures are maximum laboratory Rw values for the systems as configured; achievable site performance depends on the whole construction. Confirm project-specific ratings with our technical team.

To specify a movable wall, you need to define the opening size, the acoustic performance target, the structural support available, the finish, the stacking position and whether a pass door is required — along with the floor finish, ceiling construction, access, programme and any fire requirements. The more of this you can confirm early, the more accurate the design and price.

For a fuller, step-by-step walkthrough see our movable wall specification guide, and for NBS clauses see our NBS specification page.

Top-hung systems place the combined weight of the track and panels into the supporting structure above, so a suitable steel or concrete beam is usually required. Floor-supported systems transfer their operating weight through the floor while needing suitable head restraint at the top. Structural requirements should be confirmed by a structural engineer for the selected system and project, not assumed.

The critical points for design teams are the load path, permissible deflection of the supporting structure, and the fixing capacity where the track is attached. A track fixed to structure that deflects under load will not operate or seal reliably. ModernGlide provides structural loading information for its systems so the structural engineer can confirm the design.

Loading data and drawings are available via our technical downloads and technical drawings.

The overhead track can be fixed to a range of supporting structures — structural steelwork, a concrete soffit, timber support or proprietary support systems — with allowance made for suspended ceilings and head tolerances. The right fixing method depends on the structure present and the weight of the system.

• Steelwork — track fixed to a structural steel beam sized for the load.
• Concrete soffit — fixed to a suitable reinforced concrete beam or slab.
• Timber support — where an engineered timber support is provided and confirmed.
• Proprietary support / channel systems — where used to distribute the fixing.
• Suspended ceilings — the ceiling is coordinated around the track, not relied on for support.
• Head tolerances — allowance for structural movement and deflection above the track.

Movable wall panels are engineered assemblies — a framed structure with acoustic insulation and facing boards, closed with vertical profiles and top and bottom seals. They can be finished in a wide range of materials to suit the interior, from laminate and veneer to fabric, writable surfaces and glass.

Panels are built from a frame, internal acoustic core, facing boards, edge profiles and integrated seals. Available finishes include:

See real finishes in our installation gallery.

A pass door is a hinged door built into the movable wall, allowing people to move between the divided rooms without opening the whole wall. Pass doors are available in solid and glazed forms, as single or double leaves, and can be designed with accessibility in mind — but they do have acoustic implications and should be specified deliberately.

• Inset pass doors — a door leaf within a panel.
• Full-height pass doors — where available for the system.
• Single or double — sized to the traffic and access requirement.
• Accessibility — clear widths, thresholds and ironmongery considered for inclusive access.
• Ironmongery — handles, closers and locks appropriate to use.
• Acoustic implications — a pass door is often the acoustically weakest point, so its rating and seals matter.

Pass doors are supported across systems including the MG100, MG200 and glazed MG600.

Movable walls are used wherever a space needs to change size — offices, schools and universities, hotels, conference and event spaces, leisure and community buildings, healthcare and the public sector. Below, each use is paired with the appropriate ModernGlide approach and a real installation.

Movable walls are normally project-priced rather than sold at a fixed price, because the cost is driven by the size, height, acoustic performance, finish, glazing, doors, track configuration, structural requirements, access, installation, location and quantity. Our online estimator gives indicative budget ranges, and our team can provide a firm quotation from your drawings.

The main factors that determine the cost of a movable wall are:

A movable wall project runs from enquiry through design, manufacture and installation to commissioning and handover. The sequence below is typical; the programme for each stage should be confirmed for your project.

1. 1Initial enquiry
2. 2Drawings / specification
3. 3Quotation
4. 4Site survey
5. 5Technical drawings
6. 6Drawing approval
7. 7Manufacture
8. 8Track installation
9. 9Panel installation
10. 10Commissioning
11. 11Handover

Manufacturing lead time depends on the system, the specification and the wider project programme. Allow time for drawing approval before manufacture begins, then for manufacture, delivery and installation. As a rule, the sooner drawings are approved, the sooner the wall can be built — confirm current lead times with our team for your project.

• Drawing approval — manufacture starts only once approved drawings are signed off.
• Manufacturing — panels and track fabricated to the approved design.
• Delivery — coordinated to the site programme.
• Track programme — track installed once the structure and ceiling zone are ready.
• Panel installation — panels hung and adjusted.
• Project coordination — aligned with other trades on site.

Movable walls are moving mechanical systems used daily, so regular servicing keeps them operating smoothly and preserves acoustic performance. Servicing covers the carriers, track, seals, alignment, doors, closures and general operation, and addresses wear before it becomes a failure.

ModernGlide services movable walls from all major manufacturers, not only our own. Learn more about our movable wall servicing and maintenance.

Most movable wall problems come down to worn or dry carriers and track, seals that no longer seat correctly, or panels that have drifted out of alignment. Many are straightforward to service. Below are the questions we are asked most, with the usual cause.

If a wall needs attention, our servicing team can help — including systems originally supplied by other manufacturers.

“Movable wall” overlaps with several other terms. The differences matter when specifying: a folding partition folds rather than slides individually; a sliding door is a single leaf, not a full dividing wall; a stud partition is permanent; and a folding glass wall is a glazed variant. Here is how they compare.

For a dedicated comparison, see movable acoustic walls vs folding partitions.

Answer a few questions about your project — solid or glazed, the acoustic level you need, how it should be supported and whether you need a pass door — and we will suggest the most appropriate ModernGlide system to start from. Every recommendation should be confirmed with our technical team against your opening and structure.

The MG Series covers solid acoustic walls, glazed movable and folding walls, frameless glass sliding panels, Crittall-style glazed partitions and a fully electric system. Each links through to its full product page and technical data.

The best way to understand a movable wall is to see it installed. These are real ModernGlide projects across offices, education, hospitality, community buildings and glazed installations — each with the system used and the full case study.

Straight answers to the questions we are asked most about movable walls — covering what they are, how they perform acoustically, how they are supported, what they cost and how they are maintained.