Key Specifications
40mm Insulated Panels
High thermal insulation with CFC-free polyurethane core (U-value efficiency).
Vision &
Glazing
Optional acrylic double-glazed vision panels or fully glazed aluminum panels.
Integrated Wicket Doors
Built-in personnel pass doors with low-threshold options.
Drive
Automation
Heavy-duty GFA / shaft-mounted electric operators or manual hand-chain hoists.
Premium 40mm Insulated Steel Panels
Engineered by Indupart, our sectional overhead doors feature 40mm thick twin-skin galvanised steel panels injected with CFC-free polyurethane insulating foam. Built for climate-controlled warehouses, distribution hubs, and commercial bays, they deliver maximum structural strength and superior thermal performance.
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High Thermal Efficiency: Achieves an impressive calculated U-value of around 0.51 W/m²K for individual panels, reducing building heat loss and lowering energy bills.
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All-Weather Protection: Fitted with continuous EPDM rubber perimeter seals (top, bottom, and side guides) to stop draughts, heavy rain, and debris.
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Finger-Pinch Protection: Lath profiles engineered with built-in safety joints to prevent finger entrapment during manual or automatic operation.
Custom Vision Panels &
Fully Glazed Options
Maximise internal daylight and improve site safety with custom glazing options designed to fit seamlessly into Indupart panel profiles.
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Double-Glazed Acrylic Windows: Oval or rectangular sealed vision units set in heavy-duty black frames for clear visibility across busy loading docks.
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Full-Vision Aluminium Sections: Anodised aluminium framed panels fitted with scratch-resistant double glazing—ideal for fire stations, automotive workshops, and modern industrial units.
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Durable & Scratch-Resistant: High-grade acrylic glazing built to withstand heavy daily use and industrial washdowns without fogging or cracking.
Integrated Wicket Doors &
Bespoke Track Lifts
Streamline site operations with integrated personnel pass doors and custom track geometry engineered around your building's roof structure.
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Built-in Pass Doors (Wickets): Allows staff to enter and exit without raising the full sectional door, preserving internal hall heat and reducing motor wear.
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Low-Threshold Wickets: Ergonomically designed with low bottom profiles to prevent tripping hazards and allow easy wheelbarrow or sack-truck access.
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Tailored Track Geometry: Available in Standard Lift, High Lift, Vertical Lift, or Roof-Pitch Following configurations to maximise interior ceiling headroom.
Expert Survey, Fitting & Safety Compliance
Behind Closed Doors Ltd delivers complete turn-key fitting and maintenance services across Oxfordshire and surrounding areas to keep your site secure and fully compliant.
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Precision Site Assessment: We measure your door apertures, inspect structural lintels, calculate spring tensions, and verify headroom clearance.
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Mandatory Safety Devices: Fitted as standard with cable-break and spring-break safety devices (anti-drop mechanisms) in accordance with BS EN 12604 regulations.
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Electric Automation & Servicing: Heavy-duty shaft-mounted drive operators (GFA/GFA Elektromaten) paired with planned maintenance packages to guarantee long curtain life.
