Large commercial interiors need materials that can support the scale, purpose and identity of the space. In major architectural projects, surface finishes are not just decorative. They help shape how the building feels, how its structure is expressed, and how different areas connect visually.
A strong example of this can be seen in JPMorganChase’s new global headquarters in New York. Designed by Foster and Partners, the building is a major addition to the city’s commercial skyline and has been created to support one of the world’s most recognisable financial institutions.
Inside a project of this scale, material choices need to feel considered and consistent. They must work across large surfaces, support the wider architectural language, and provide a finish that feels refined, durable, and appropriate for a high-performance workplace.
This is where custom Gunmetal aluminium played an important role.
A Custom Gunmetal Finish for a Landmark Project
For the JPMorganChase headquarters, Chemetal developed a custom Gunmetal aluminium finish that was used across nearly 1,400 sheets. The finish helped define key interior areas within the building, including the trading floors.
The scale of the project is significant. The trading floors were designed to accommodate thousands of people across multiple levels, creating a workplace environment where visual continuity and material performance were both essential.
In this setting, the custom Gunmetal aluminium finish helped echo the strength and structure of the wider building. Its darker tone gave the interior a more grounded architectural character, while the metallic surface supported the clean, modern feel of the workplace.
Rather than using a bright or reflective metal, the Gunmetal finish created a more restrained effect. This made it suitable for a large commercial interior where the material needed to have presence without overwhelming the space.
Why Gunmetal Aluminium Works in Modern Interiors
Gunmetal aluminium is effective because it offers depth without excessive shine. Its darker tone can help define architectural features, create contrast and add a more industrial character to a space.
This makes it particularly useful in commercial interiors where designers want a finish that feels strong, modern and controlled. Used across panels, columns, workspaces, or feature areas, gunmetal can help bring structure to a design scheme.
It also works well alongside other architectural materials. Glass, concrete, stone, timber, and exposed steel can all sit comfortably with dark aluminium finishes. The result is a material palette that feels layered and refined rather than flat or overly clinical.
In large interiors, this kind of finish can be especially valuable. Dark aluminium can help break up open areas, highlight structural elements and create a stronger sense of rhythm across the space.
Connecting Gunmetal to Industrial Metal Finishes
The appeal of Gunmetal aluminium sits within a wider trend for darker, industrial-style metal finishes. These finishes are often chosen because they offer the visual strength of metal while remaining suitable for contemporary interior design.
Black aluminium, blackened aluminium, and darker brushed finishes can all create a similar effect. They bring tone, texture and definition into a space, making them useful for both practical and decorative applications.
This does not mean an interior has to feel heavy or overly industrial. When used carefully, dark metal finishes can feel precise, architectural, and sophisticated. They can support a clean design scheme while adding enough contrast to give the space more character.
For projects where designers want a darker aluminium surface, finishes such as #352 Alu Light, #353 Alu Medium and #354 Alu Dark can offer useful inspiration. These types of industrial aluminium finishes provide subtle variation in tone and texture, helping create a more natural and material-led appearance.
Where Dark Aluminium Finishes Can Be Used
Dark aluminium and blackened metal finishes are versatile because they can be used across a range of commercial and architectural applications. In some spaces, they may form a key visual feature. In others, they may be used more subtly to add depth and contrast.
Common applications include:
• Interior wall panels and decorative feature surfaces
• Reception desks and front-of-house areas
• Column cladding and architectural details
• Lift interiors and lobby spaces
• Workspace panels and furniture elements
• Retail displays and hospitality interiors
• Commercial interiors with an industrial or architectural design scheme
• Joinery, counters and fitted interior details
The key is to consider how the finish supports the wider space. Dark aluminium often works best when it is used to frame, define, or anchor a design rather than dominate every surface.
When paired with lighter materials, natural textures, and carefully planned lighting, black aluminium and Gunmetal-style finishes can create a strong but balanced interior.
Explore Industrial Metal Finishes with G-Tex
The use of custom Gunmetal aluminium within JPMorganChase’s new global headquarters shows how powerful darker metal finishes can be in major commercial interiors. In a landmark project designed by Foster and Partners, the finish helped support the scale, structure, and visual identity of the building.
For architects and designers working on commercial, hospitality, retail or workplace interiors, similar industrial finishes can provide the same sense of depth and definition. Whether the aim is to create a blackened aluminium effect, specify a darker decorative metal sheet, or introduce a more architectural surface finish, these materials can bring strength and character to a space.
G-Tex supplies a range of darkened aluminium finishes suitable for decorative and architectural use, including black aluminium and industrial-style finishes that offer darker tones, subtle texture, and modern visual appeal.
Explore the G-Tex black aluminium range to find industrial metal finishes suited to commercial interiors, feature surfaces and architectural design projects.
