Glass Partitions

Fixed glass partitions are built site-installed: aluminum or steel framing at the floor, head, and side jambs, with tempered or laminated glass set into the framing. Once installed, they're permanent — disassembly requires demolition. Best fit: tenants on long lease (5+ years) where the floor plan is stable, build-outs where cost per linear foot matters more than future reconfigurability, and any application where the wall needs full structural integration (acoustic, fire-rated, or load-bearing).

Framing options: thin profile aluminum (CRL 487 Series, Acurit 7700) for clean sightlines, structural steel for high-load or fire-rated assemblies, and frameless silicone-bonded (vertical joints between panels are silicone only, no aluminum mullion) for the most architectural minimal look.

Glass spec varies with acoustic and security needs. Single-pane 3/8 inch tempered for visual separation only (STC 28-31). Single-pane 1/2 inch laminated for slight acoustic upgrade and security (STC 34-36). Dual-pane laminated IGU with acoustic interlayer for conference room privacy (STC 42-45). For privacy in C-suite or HR/legal applications, we step up to staggered-thickness laminated IGUs reaching STC 47-50.

Doors integrated with the partition system: framed or frameless glass doors with hinges, pivots, or sliders. Sliders (top-track barn-style doors) are increasingly popular because they don't intrude into the room when open — useful in tight conference rooms.

Demountable systems are pre-engineered partition kits that ship to the site, install in 1/4 to 1/3 the time of conventional partitions, and — critically — disassemble and reconfigure without demolition. The cost is higher per linear foot at first install (10-30% premium over conventional), but the lifecycle cost is dramatically lower for tenants that reconfigure space every 2-5 years.

DIRTT (Calgary, Canada — Doing It Right This Time) is the dominant system in the NJ market. Floor and head channels anchored at install, glass and solid panels snap into the channels with integrated power, data, and lighting prewired in the panels. Reconfigurable in 24-48 hours per major change. Integrated doors, integrated cabinetry, even integrated technology (monitors flush-mounted into solid panels). Premium-priced and premium-quality.

Modernfold and Hufcor — operable partition systems. Tracks run across the ceiling, panels stack at one end or split-stack at both ends. Used to divide large rooms (boardrooms, training rooms, banquet halls) on demand. STC ratings up to 56 on premium acoustically-engineered systems. We install and service Modernfold Acousti-Seal and Hufcor 600 Series in Class A NJ office space.

Steelcase V.I.A. and Haworth Enclose — competitor demountable systems, generally less premium than DIRTT but at lower cost. We install both when the tenant specifies. Less common in NJ than DIRTT, which has aggressive sales presence in the NYC/NJ metro.

Capital classification matters: demountable systems can often be depreciated as 7-year MACRS personal property rather than 39-year leasehold improvement, which significantly improves the tax treatment. We work with the tenant's CFO or accountant on classification questions — the integrated power/data prewiring is what gets you the personal property treatment.

STC (Sound Transmission Class) is a single-number rating for how well an assembly attenuates airborne sound. Higher = better. Real-world translation: STC 25 (speech easily understood through wall), STC 30 (loud speech understood), STC 35 (loud speech audible but not clearly intelligible), STC 40 (loud speech faintly audible), STC 45 (loud speech barely audible), STC 50 (loud speech not audible), STC 55+ (recording studio territory).

Conventional drywall partition with 3-5/8 inch metal stud, single layer 5/8 gypsum each side, insulated: STC 36-39. Same construction with double layer gyp: STC 44-48. Same construction with isolation clip system: STC 52-58.

Glass partitions face inherent acoustic disadvantage — glass is dense but rigid, and resonance frequencies can amplify certain speech frequencies. Single-pane 1/2 inch tempered: STC 31. Single-pane 1/2 inch laminated with acoustic PVB: STC 36. Dual-pane laminated IGU (5/16 + 5/16 acoustic PVB): STC 42-44. Premium dual-pane staggered-thickness laminated: STC 47-50.

Critical: STC ratings assume the wall is sealed at perimeter. A great STC 45 partition with poor head and base sealing will perform at STC 30 in the field. We always specify perimeter acoustic gaskets, sealed power/data penetrations, and acoustic batts in the head and base channels. We've measured 12-15 STC field improvement just by properly sealing a partition that was specced and installed at STC 42 but performing at STC 28.

Open-plan floor with glass-enclosed huddle rooms and phone booths: single-pane 3/8 tempered with frameless silicone joints. Doors are either swing or sliding barn-style. STC 30-33 in field. Common throughout NJ tech and finance tenants in Newport, Hoboken, Princeton.

Conference rooms and team rooms: single-pane laminated 1/2 inch with acoustic PVB. STC 35-37 in field with proper sealing. Doors with drop seals at the bottom. Standard spec for general conference rooms.

Executive offices and C-suite: dual-pane laminated IGU with acoustic spacer. STC 42-45. Acoustic-rated doors with full perimeter gasket and drop seal. We install these in law firms, financial services, and any tenant where the executive needs guaranteed speech privacy.

HR/legal interview rooms: STC 45+ required for confidentiality. Often paired with sound-masking systems (Cambridge Sound Management, Logison) to provide acoustic ambient cover. We coordinate with the AV consultant on these installs.

Training rooms and divisible boardrooms: operable partition systems (Modernfold, Hufcor). STC 50-56 panels with floor-to-ceiling seals. Stack at one end when open, deploy across the room when closed. Significant upfront cost but enables the room to serve double duty.

Newark CBD — Class A office towers around Penn Station, Broad Street, and the Ironbound. Multi-tenant office buildouts and corporate HQ tenant improvements. After-hours work standard.

Jersey City Newport, Exchange Place, Journal Square — financial services and tech tenant heavy. Goldman Sachs, JPMorgan, and other major tenants. Strict base-building specs we follow.

Hoboken — Maxwell Place, Hudson Tea, and converted industrial space. Tech and creative tenants. Older buildings often have structural quirks (existing columns, irregular floor slabs) that complicate partition layout.

Princeton, Route 1, Edison — corporate campuses (Bristol-Myers Squibb, Bloomberg, JNJ adjacent supplier offices). Conference room and executive suite installs are the dominant scope.

Cherry Hill, Mt. Laurel, Marlton — south Jersey office market. Less density but consistent demand for office partition systems in mid-rise office buildings.