Roof Double Leaf – Commercial (RDL-C) is a double leaf smoke vent unit, designed for large area smoke and heat ventilation in commercial and industrial buildings within protected lobbies and stairwells, and warehousing and manufacturing facilities. They also provide natural comfort ventilation and when supplied with polycarbonate glazing will provide natural daylight. They are CE Certified to BS EN12101-2 and have been independently tested by an accredited third party.
They are available with insulated or uninsulated upstands for installation into prepared roof apertures. They are also available with adaptor bases for installation onto builders upstand curbs, profile metal roofing or within continuous glazing. Size range is width 1000 to 2500mm and length 1000 to 3500mm.
The units are manufactured according to ISO 9001 quality control standards from tempered, seawater and corrosion-resistant AlMg3 aluminium; with corrosion-resistant bearings. The aluminium is supplied mill finish as standard and free of silicones and may be powder coated white internally or powder-coated internally and externally to any RAL colour.
Values below are calculated centre pane U-values unless denoted otherwise. Complete unit U-values are available on request.
Typical Values U-Value (W/(m2.K))
Polycarbonate multiwall 16 mm
Polycarbonate multiwall 25 mm *
Polycarbonate multiwall 32 mm *: 1.60
Solid insulated cover 20mm
Solid insulated cover 40mm *: 0.73
Insulated Aluminium 20mm
Insulated Aluminium 40mm *
* Available with thermal break aluminium profiles
Coefficient Value (Cv): 0.56*
Reliability – Fire: RE1000
Reliability – Comfort: RE10000
Snow Load: SL1500
Wind Load: WL250
Resistance to Heat: B300
Low Ambient Temperature: (-05)
* With wind deflectors
Impact resistant to EN 1873: 1200J
Water tightness to EN 1873: Pass
Fire rated to BS 476 Part 3: AA
Actuator Voltage: 24V DC