Quick answer: Framed partitions use slim aluminum verticals between 3/8-inch tempered panels and sit at the lower end of the cost range. Frameless partitions use 1/2-inch tempered glass butt-joined with structural silicone and cost more. Doors are a line of their own. For privacy, choose between frosted bands (light still passes), full frosted panels, or a frosted vinyl logo treatment. For sound, single-pane gets you STC 35 to 38; insulated or laminated acoustic gets you STC 45+.
If you have a square footage and door count already, jump straight to what drives the cost. Otherwise, the system choice is where to start: it sets the look, the cost band, and the acoustic ceiling.
The two big system choices: framed vs frameless
Glass office partitions fall into two systems. The difference is structural, and it's also the most visible aesthetic decision.
Framed glass partitions
Framed systems use slim aluminum extrusions at the perimeter (floor track, ceiling header, and side jambs) and at every vertical joint between panels. The glass, typically 3/8-inch tempered, sits inside the extrusions held by glazing gaskets. The verticals between panels are typically 1.5 to 2 inches wide, depending on the system.
The framing comes in stock anodized colors (clear, dark bronze, matte black, white) and in custom-color anodized or painted finishes. Matte black reads as architectural and disappears against painted ceilings and dark floors. Clear anodized is the classic Class A office look.
Best for: most office build-outs. Framed is cheaper, easier to design around odd floor and ceiling conditions, easier to seal acoustically, and the framing actually adds visual structure that helps the wall read as a real division of space rather than disappearing entirely.
Frameless glass partitions
Frameless systems eliminate the verticals between panels. The glass, typically 1/2-inch tempered and sometimes 5/8-inch for taller spans, runs as a continuous plane, with panel-to-panel joints sealed with structural-grade silicone in a slim shadow line. A continuous channel at the floor and ceiling holds the panels in place; the verticals disappear.
The result is a glass wall that reads as a single seamless surface: the cleanest, most modern look available. Frameless suits flagship Class A offices, executive floors, design studios, law firms and any tenant that wants the partition to read as architecture rather than partition.
Best for: flagship offices, premium build-outs, and any space where the partition is part of the design statement. Frameless costs more than framed, requires more precise floor and ceiling conditions, and has slightly weaker acoustic performance at the panel joints, but the visual payoff is significant.
For the full commercial offering, see our commercial glass page. The commercial storefronts and offices pillar covers the full picture across exterior and interior work.
Glass spec: single vs insulated, clear vs frosted
Inside the framed or frameless system, you still pick the glass itself.
Single-pane vs insulated (dual-pane)
The vast majority of interior office partitions are single-pane 3/8-inch or 1/2-inch tempered. The partition divides two conditioned rooms (both at the same temperature), so there's no thermal reason to spec insulated glass. Single-pane is lighter, thinner, cheaper, and easier to install.
Insulated dual-pane partitions are spec'd specifically for acoustic performance. The dead-air space between the panes dampens sound transmission, pushing the partition from STC 35 to 38 (single) to STC 42 to 45 (insulated). For C-suite offices, legal conference rooms, HR offices and medical consult rooms, the acoustic upgrade is worth the cost.
Clear vs frosted vs low-iron
Clear is the default. Standard clear glass has a faint greenish tint visible at the edges and on large panels, especially in bright daylight. Low-iron glass eliminates that tint: it's water-clear, more expensive, and the right call for premium build-outs where the partition is meant to disappear visually.
Frosted glass obscures the view through the partition while still letting light through. Three flavors of frost: sandblasted (permanent, slight texture, premium look), acid-etched (smoother permanent frost, slightly less durable than sandblasted), and frosted vinyl film (applied to clear glass, removable, cheapest option). All three look similar from a distance.
Privacy bands and patterns
Most office partitions don't need to be fully frosted; most need to obscure the seated eye line and nothing else. That's what privacy bands are for.
A frosted privacy band is a horizontal strip of frost, typically 24 to 36 inches wide, centered at standing or seated eye level. The exact placement varies by use case:
- Standing eye level (60 to 72″ off floor). Used in corridors and high-circulation areas, where it blocks direct sightlines between people walking past and people seated inside.
- Seated eye level (36 to 48″ off floor). Used in conference rooms and offices where the people inside are seated. Blocks direct eye contact between seated occupants and the hallway, while still letting daylight pass and preserving the visible glass aesthetic.
- Bottom band (0 to 24″ off floor). Used to hide cluttered floors, desks under partitions, and the lower body of people seated.
Patterns beyond plain bands are common. Dot gradients (small frosted dots that get denser at eye level, fading to clear at the top and bottom) read as branded and contemporary. Logo and wordmark treatments apply the company logo or a wayfinding label as part of the frost pattern. Geometric patterns (vertical lines, horizontal stripes, organic shapes) can be designed to match interior architecture.
Tip: Privacy films can be replaced or removed if you ever change use of the space. Sandblasted or etched frost is permanent and adds resale value to the build-out as architectural detail. Make the choice based on how long you plan to keep the layout.
Doors: hinged, sliding and pocket
Every partitioned office or conference room needs a door. The choice between hinged and sliding affects floor space, acoustic performance, and how the room feels in daily use.
Hinged glass doors
The standard. A hinged glass door swings into or out of the partitioned room on a pair of pivot hinges or butt hinges, with a closer to control swing. Door closer repair brings that control back when a glass door starts to slam or swing too freely. Hinged doors seal best: the door pulls tight against the frame with a gasket or sweep, maximizing acoustic performance. The downside is the swing area: a 36-inch door needs 36 inches of clear floor space to swing.
A full-glass hinged door can be spec'd as 1/2-inch tempered glass with no header rail, pivot hinges top and bottom, a stainless pull bar and a hydraulic floor closer, and the hardware drives the cost.
Sliding glass doors
A sliding door runs on a top-hung track and slides parallel to the partition wall, eliminating the swing area. Three sub-types:
- Surface-mount top-hung. Track is exposed above the door, doors slide along the wall surface. Cleanest modern look, easiest to retrofit.
- Recessed track top-hung. Track is hidden in a soffit or ceiling pocket, only the door is visible. Premium look, requires ceiling coordination.
- Pocket sliding. Door slides into a wall cavity when open, completely disappearing. Maximum floor-space efficiency, requires wall depth and structural coordination, plus the wall construction around it.
The tradeoff with sliding doors is acoustic performance. Sliding doors don't seal as tightly as hinged: there's typically a 1/4-inch gap at the floor (to clear flooring) and a small gap at the leading edge. STC ratings on sliding-door rooms tend to drop 3 to 5 points compared to the same partition with a hinged door. For executive offices and any room that needs full speech privacy, hinged is the right call.
Telescoping and bi-fold
Two glass doors running on parallel tracks can telescope past each other for a wider opening, or fold against each other to clear a doorway in pairs. Less common, but useful in conference rooms that open into adjacent collaboration space: when the doors are open, the two spaces effectively become one.
Sound: what STC ratings actually mean
STC (Sound Transmission Class) is the rating that quantifies how much sound a wall blocks. Higher is better. For office partitions, here are the practical thresholds:
| STC | What you can hear through the wall | Glass partition spec |
|---|---|---|
| 30 to 34 | Normal speech audible and intelligible | Sliding-door room, single-pane, gaps at perimeter |
| 35 to 38 | Normal speech audible but not intelligible | Hinged-door single-pane 3/8″ tempered, properly sealed |
| 40 to 44 | Loud speech barely audible | Single-pane laminated, OR insulated dual-pane |
| 45 to 49 | Loud speech inaudible, music audible | Insulated dual-pane with acoustic interlayer |
| 50+ | Confidential: even shouting is faint | Heavy laminated acoustic + sealed perimeter, full ceiling-to-deck |
The threshold for "confidential speech privacy", the standard cited in office design guides, is roughly STC 45. That requires either insulated dual-pane or laminated acoustic glass, plus carefully sealed perimeter framing, plus a hinged (not sliding) door, plus a partition that goes all the way to the structural deck above (not just to the dropped ceiling).
A partition at STC 38 to 42 mutes conversation enough that you can't make out specific words but can tell that someone is talking. That's adequate for most cubicle-replacement work and standard conference rooms. For HR, executive and legal use, push to STC 45+.
Working with your contractor and architect
We work on glass partition projects with general contractors, interior designers and architects. The handoff looks like this: the GC or designer provides drawings (typically a partition plan with door locations and frosted areas marked), we measure on site to verify floor and ceiling conditions, we provide a firm, itemized written quote, the GC handles floor preparation and ceiling coordination, and we install once the rough is ready.
If you're a contractor, property manager or designer scoping multiple offices, our contractor partners page covers our trade program.
Planning an office buildout?
Send us your floor plan or sketch to start. We measure on site, the firm, itemized written quote follows, and you tell us your hours at the measure.
For Contractors & Property ManagersWhat drives the cost
What moves the price on an office partition project:
| System | What adds cost | Best for |
|---|---|---|
| Framed aluminum, 3/8″ tempered, single-pane | The base: stock framing and single-pane tempered glass | Standard office build-outs |
| Framed aluminum, 1/2″ insulated dual-pane | The insulated unit | Acoustic-sensitive offices, exec floors |
| Frameless butt-glazed, 1/2″ tempered | Heavier glass and precise floor and ceiling channels | Flagship, premium and design-forward build-outs |
| Frameless laminated acoustic | The laminated acoustic glass | Legal, HR, executive: maximum speech privacy |
Doors are priced per door: a hinged door with basic hardware is the simplest, a hydraulic closer and premium hardware add to it, and sliding doors on a surface-mount track, a recessed track or a pocket each add their own track and wall work.
Privacy treatments are priced per panel: a plain frosted vinyl band is the simplest, a custom logo or pattern in vinyl costs more, and permanent sandblasted frost and acid-etched custom patterns cost more again.
The free on-site measure records the partition plan, and the firm, itemized written quote shows each of these lines.
Three scopes compared
Three office scopes, from one room to a full floor:
- Single conference room enclosure. 200 square feet of framed partition (matte black anodized), a single hinged glass door and a frosted vinyl band at seated eye level. The partition length and the door drive the quote.
- Four-office build-out. Three private offices (framed, single-pane, hinged doors) and one conference room (insulated dual-pane, hinged door), roughly 600 square feet of partition in total. The insulated conference room glass and the four doors drive the quote.
- Class A flagship floor. Frameless butt-glazed partitions around five executive offices and two conference rooms with laminated acoustic glass, sliding doors on the offices and hinged doors on the conference rooms, roughly 900 square feet of partition. The frameless glass and the laminated acoustic glass drive the quote.
How the work is sequenced
An office partition project runs in stages: the free on-site measure, the firm written quote, fabrication of the framing or channels and the glass, then the install of the perimeter framing, the glazing and the doors. Custom-color framing, insulated or laminated acoustic glass and custom-pattern frost or etching each add steps of their own. Tell us your hours at the measure, and we coordinate with property management on access and freight elevator scheduling.
Putting it together
Office partitions come down to four decisions. System: framed for cost and acoustics, frameless for flagship design. Glass spec: single-pane is the default; insulated or laminated where acoustic privacy matters. Doors: hinged for acoustic performance, sliding for floor-space efficiency. Privacy: frosted bands and custom patterns for visual privacy without blocking light.
Send drawings or a floor sketch to start, and the firm, itemized written quote follows the free on-site measure. For multi-floor build-outs and tenant-improvement projects, we'll meet on site and walk through with your GC and architect.