Innovation in Thermal Steel & Aluminum Window Systems

Custom Metal thermal steel and bronze window and door systems are engineered from the ground up around a true thermal break, not a cosmetic add-on. A continuous, structural insulating barrier separates the exterior steel or bronze from the interior with a true break between inside and outside metal frames, dramatically reducing conductive heat transfer through the profile. This design allows you to enjoy the crisp, minimal sightlines of steel or bronze while achieving comfort and performance levels that compete with high-end aluminum and wood systems.

• Continuous, full-depth thermal bridge integrated into frame and sash
• Exterior and interior metals thermally isolated at all sash and frames
• Warmer interior frames in winter and cooler surfaces in summer for improved comfort
• Significantly reduced condensation potential at frame edges, helping protect finishes and adjacent materials
• Enables steel windows and doors to be used in more climate zones and more parts of the building envelope
• Designed to work as a structural component of the frame, maintaining rigidity for large spans
• Supports standard and high-performance glass thicknesses for energy, acoustic, and impact requirements

Maximum Shield is Custom Metal’s multi-layered finish system designed to protect steel windows and doors from the inside out. Starting with carefully prepared galvanized or stainless substrates, each component receives a sequence of corrosion-inhibiting primers and super-durable topcoats engineered for exterior exposure. The result is a smooth, refined finish that stands up to coastal air, UV, and everyday wear while maintaining a consistent, architectural appearance across the entire window and door system.

• Corrosion-resistant steel substrates selected for the application
• Zinc-enriched or comparable primer layer for deep, long-term protection
• Super-durable powder or high-performance topcoat systems in a wide color range
• Optional upgraded systems available for extreme coastal or high-UV environments
• Extended finish life, helping reduce maintenance and repaint cycles
• Strong resistance to chalking, fading, and blistering for a long-lasting, uniform appearance
• Protection against salt, moisture, and urban pollutants, especially in demanding locations
• Design flexibility with hundreds of standard colors, split finishes, and custom color matching

On a Custom Metal system, security and feel are built into every operable sash and door leaf. Instead of a single latch, each unit is secured with a coordinated multi-point locking system that engages the frame at several locations. When the handle is thrown, you feel the sash pull tightly into the seals, delivering a satisfying, secure closure that improves both security and everyday comfort.

• Standard multi-point locking on all operable windows and doors
• Locking points strategically located along the frame perimeter
• Compatible with a range of handle styles and backplates
• Enhanced resistance to forced entry compared with single-point latching
• Improved gasket compression for better air, water, and sound performance
• Clean, uninterrupted sightlines, with hardware integrated (concealed) into the profiles
• Adjustable strikes and keepers to fine-tune operation over time

Large, heavy doors and operable sashes demand hardware that can keep up. Custom Metal’s tri-axis stainless steel hinges are designed specifically for the weight and precision of thermally broken steel and bronze systems. With independent adjustments in three directions, installers can fine-tune alignment so reveals stay even, compression is correct, and operation remains smooth year after year.

• Heavy-duty stainless steel hinge construction for corrosion resistance and strength
• Three-axis adjustment (height, lateral, and compression / in-out)
• Clean, minimal profiles that complement slim steel sections
• Engineered load capacity for tall, wide, and triple-glazed doors
• Precision adjustment via accessible screws, accessible for field tuning