Metal-framed Windows Elevate Luxury Multi-Residential Development

by hanna_kowal | March 19, 2026 9:24 am

The Mosaic, a new upscale boutique multifamily development located at 88 Sloan Street, South Orange, N.J., features 323 metal-framed windows and doors. The windows elevate luxury aesthetics and performance as metal framing brings a sleek style to the project while ensuring efficiency goals are met.

Across the street from the N.J. Transit South Orange rail station and within the designated South Orange Transit Village, the new luxury apartment building is part of the ongoing redevelopment and rejuvenation of this community.

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For the South Orange project, eight different window and door products were integral. Aluminum sliding, double-hung, fixed, and casement windows, along with sliding patio doors, sidelights, and swing terrace doors, were specified. In most cases, twin and triple window units were mulled atop other multiple units, creating large, tall combinations, some spanning openings 2,438.4 mm (96 in.) wide by 2,235.2 (88 in.) tall.

The sliding window used at The Mosaic uses the heavy-commercial aluminum in an 82.6 mm (3.25 in.) frame depth window rated AW-PG40. The sliding windows feature dual stainless steel sash rollers and stainless steel reinforced roller tracks. To facilitate installation, the windows were specified with an optional nailing fin. The double- and triple-lite sliding windows were field-mulled atop fixed windows to maximize views.

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The South Orange project included an extensive number of aluminum double-hung windows. Rated CW-PG50, the 82.6 mm (3.25 in.) window features tilt-in sashes, metal tilt latches, and anti-drift clip locks at the top sash head and is integrated with the lower sash lift rail. Most of the windows were fabricated as twin- and triple-unit assemblies using the product’s continuous master frame and impost options. To span large openings, the twin and triple units were typically field-mulled atop matching twin- and triple-fixed window combinations. All the double-hung windows were fitted with decorative between-glass grids.

Complementing the sliding and double-hung windows on this project were fixed windows, also with an 82.6 mm (3.25 in.) frame depth, rated CW-PG60. A master frame sash impost option enables two- and three-lite horizontal and vertical arrangements. On the Mosaic building, the fixed windows included matching decorative between-glass grids when paired with the Series 2600 double-hung windows.

Completing the windows specified included a heavy-commercial aluminum outswing casement and fixed windows. Both products have narrow sightline 66.7 mm (2.6 in.) frames, strong 3.2 mm (0.13 in.) thick frame and sill extrusions, and architectural ratings of AW-PG70 (casement) and AW-PG85 (fixed). The outswing casement features double weatherstripping on the sash perimeter and a four-bar stainless steel hinge. Both window models are compatible with one another, and using the continuous master frame impost option, can be fabricated in multiple horizontal or vertical combinations. In a few instances at The Mosaic, large fixed triples were field mulled atop other fixed triples to span large openings 2,311.4 mm (91 in.) wide by 2,235.2 mm (88 in.) tall.

Access to apartment terraces and balconies is provided by aluminum sliding patio doors or aluminum swing terrace doors. Both doors are architecturally rated heavy-commercial doors with 25.4 mm (1 in.) insulated glass and multi-point locks.

Most of the doors used on the project are two-lite sliding patio doors with a 116 mm (4.6 in.) jamb depth and are AW-PG50 rated. The door features heavy-duty, adjustable tandem quad-ball bearing rollers. The Crystal sliding doors were specified as large custom-sized 2,082.8 mm (82 in.) wide by 2,463.8 (97 in.) tall and furnished in a “knock-down” (KD) package for easy handling and jobsite assembly. Approximately half of the Crystal sliding doors were ordered with the full-compatible matching sidelight Series 1270A. This fixed transom/sidelight window has a 116 mm (4.6 in.) frame and is rated AW-PG75. Combined, the sliding door and sidelight spanned openings 2,844.8 mm (112 in.) wide by 2463.8 mm (97 in.) tall.

Inswing terrace doors are also incorporated into the design. With heavy-duty extrusion profiles 2.4 mm (0.093 in.) thick, this 82.6 mm (3.25 in.) jamb depth aluminum door achieves an AW-PG60 rating. Owing to its polyamide-insulated strut thermal-break design, this product offers superior energy efficiency.

All window, door, and sidelight frames were finished on both exterior and interior surfaces with a sustainable black powder-coat paint. Sash stops and limit-opening devices were factory-installed on operating casement, double-hung, and sliding windows. All the double-hung windows and many of the fixed windows were supplied with between-the-glass 15.9 mm (0.6 in.) colonial-style grids.

Partners in The Mosaic South Orange[3] project include architect Appel Design Group of Florham Park, N.J., and developer 8 Second Street Urban Renewal, LLC, of Union, N.J. Mark-Built Homes of Union, N.J., was the general contractor for the project.

Source URL: https://www.metalarchitecture.com/news/daily-news/windows-elevate-luxury-mosaic/

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