Custom Fixed Windows

Custom Fixed Windows

Custom Fixed Windows

Engineering-Grade Custom Fixed Windows for Specialized Industrial Applications

Fixed windows, commonly known as vision lights, serve as critical components in architectural design where structural integrity and thermal performance supersede mechanical operation. Unlike operable units, custom fixed windows are engineered to remain stationary within the frame, allowing for larger glass spans, higher-performance wind-pressure ratings, and optimized thermal resistance coefficients. For engineers and procurement teams, selecting the right fixed unit involves a precise balance between frame material, glazing specifications, and the specific environmental stresses of the installation site.

Material Selection and Structural Integrity

The choice of framing material dictates the window's resistance to thermal expansion, corrosion, and mechanical load. In industrial environments, the decision-making process usually centers on the atmospheric conditions and required structural rigidity.

  • Extruded Aluminum (6063-T5/T6): Preferred for its high strength-to-weight ratio and corrosion resistance. When powder coated or anodized, it offers durability in coastal or chemically active environments.
  • Galvanized Steel: Utilized in high-span applications where maximum structural stiffness is required. It provides superior resistance to wind loads but requires specialized coatings to prevent oxidation over time.
  • Reinforced PVC: Selected for projects where thermal break efficiency is the primary driver. Internal steel reinforcements prevent deformation under heavy-weight glazing or extreme temperature fluctuations.

Glazing Options and Performance Metrics

Because fixed windows do not move, the glazing system can be optimized for performance far beyond standard operable units. This allows for the integration of triple-pane insulated units or laminated safety glass that would be too heavy or complex for moving hardware.

Glazing Type Primary Technical Benefit Typical Application
Double Glazed with Argon Thermal insulation (U-value optimization) Office blocks, laboratories
Laminated Safety Glass Impact resistance and acoustic attenuation Industrial warehouses, high-security zones
Low-E Coating Solar heat gain management (SHGC) Energy-efficient facades
Tempered Glass Thermal shock resistance and safety Commercial kitchens, floor-to-ceiling spans

Manufacturing and Tolerance Control

Custom fixed windows require precision manufacturing to ensure a water-tight seal within the building opening. Unlike off-the-shelf components, our custom units are fabricated based on specific CAD drawings, allowing for non-standard dimensions that integrate seamlessly into existing structural frames.

custom fixed windows

The production process begins with CNC-guided cutting of frame profiles to maintain dimensional accuracy within ±1.5mm. The glazing process utilizes high-performance EPDM gaskets or structural sealants that maintain elasticity over decades, preventing the common failure point found in lower-quality installations.

Technical Specifications

While specifications vary by project requirements, the following represent our standard baseline for industrial-grade fixed units:

Structural Performance

Wind load ratings: Up to 4000 Pa (customizable based on thickness). Water penetration: Class 4-5 rating.

Thermal Profile

U-value: 1.1 to 2.8 W/m²K depending on glazing and frame break.

Customization

Finishes: Powder coating (micron-specific thickness), Anodizing, or PVDF finishes.

Quality Assurance and Logistics

To mitigate risk during procurement, every custom order undergoes a rigorous inspection protocol. This includes dimensional verification against project submittals and water ingress testing. For international shipping, we utilize reinforced timber-crated packaging with internal bracing to prevent frame racking or glass fracture during transit.

Lead times are determined by the complexity of the glazing and the volume of the production run. We provide detailed production schedules to ensure site managers can align delivery with construction milestones.

Ready to discuss your specifications?

Contact our engineering team with your CAD files or site requirements for a technical review and quotation.

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Frequently Asked Questions

Can fixed windows be integrated into existing curtain walls?

Yes, custom fixed units can be manufactured to match the profile depth and thermal break of existing curtain wall systems to ensure aesthetic consistency and structural continuity.

What is the maximum span for a single fixed pane?

Span limits depend on glass thickness and frame reinforcement. Typically, steel reinforced aluminum frames can support significant spans, provided wind-deflection calculations allow.

How do you handle thermal bridging in aluminum frames?

We utilize thermally broken extrusions (polyamide strips) to separate the interior and exterior aluminum, significantly reducing heat transfer and preventing condensation.

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