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MONO/DOUBLE PITCH ROOFLIGHTS
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Description: Modular factory glazed panel system.
Type: mono/double pitch rooflights set flush into pitched natural slate roof using conservation detail / onto
upstand on flat roof. / into metal profile roof.
Manufacturer: Vitral UK Ltd, 17 High Street, Whittlesford, Cambs, CB22 4LT
Tel: 01223 499000
Fax: 01223 499001
e-mail: vitral-uk@vitral.co.uk
Quality control of component manufacture: system to be manufactured to ISO 9001:2000
Product reference: A74
Frame: Thermally broken aluminium frame with thermal break of at least 20mm.
Frame width: Sightlines between fixed &/or opening profiles to be 50mm or less.
Finish: ppc. coated aluminium frame/natural annodised.
Glazing details: Double glazed low-e argon filled insulating glass units, laminated inner pane and toughened outer
as required to resist maintenance and impact loadings and for the properties below:
o Reflective metal oxide coating applied off-line (delete line if using tint or clear glass)
 Light Transmittance
LT: 0.50
(green tint is 0.65, clear glass is 0.76)
 Energy Transmittance TET: 0.25
(green tint is 0.41, clear glass is 0.61)
Thermal transmittance: Complete rooflight system U-value (combined frame including all opening vent framing
and glass and perimeter junctions) to be less than 1.8 and proven for the specific rooflight using SAP approved
software and to comply with Part L of the Building Regulations October 2010. This must include all opening vent
framing. Cold bridges (such as those on patent glazing carrier rails) must be avoided.
Air permeability: Assembly airtight (including vents) to 3m3/h/m2 @ 50 Pascals in accordance with (ATTMA) Air
Tightness Testing and Measurement Association best practice recommendation index for school buildings, offices
& dwellings. When tested, natural ventilation openings should be closed but not sealed to provide a realistic
measurement of the actual leakage.
Water permeability: 100% Watertight in sloped orientation (including vents) to 750 Pascals and with EN12208
Class E750 rating.
Verification of Performance: Rooflight to meet the requirements of EN14351-1:2006 with declaration of conformity
and accompanied by a CE Label to prove complete installation has been tested for watertightness, thermal
transmittance, air permeability and factory production control.
Ventilation: 20 No. full length opening vents to the rooflight for natural daily ventilation. Supply and fit to each
opening panel a Window Master chain/linear actuator with sufficient lifting capacity for the panel.
Vent design: Vents to be flush in-line with the glazing. For conservation detailing there should be no visible
difference in framing between a fixed panel and an opening vent.
Controls: Supply Window Master control panels including rainsensor, thermostat and manual keyswitch over-ride
with links for BMS.
Wiring supply and commissioning of controls, by others.
Rooflight Installation: To be carried out by a trained and approved installer. Contract VITRAL UK Ltd. 17 High
Street, Whittlesford, Cambs, CB22 4LT. Tel: 01223 499000 Fax: 01223 499001
Support structure: Rooflight panels to be fitted to the structural frame which is by others. All continuous structural
supports at the head, cill and verge, shaped & aligned to suit the pitch of the glazing to be provided & fixed by the
main contractor.
Vitral A/S, Havremarken 4, 3650 Ølstykke, Denmark, +45 47 18 01 00, E-mail: info@vitral.dk, www.vitral.dk
Vitral Ltd, High Street, Cambridgeshire, UK, +44 01223 499 000, E-mail: vitral-uk@vitral.co.uk, www.vitral.co.uk
Vitral Norge, +47 48 02 99 99, E-mail: info@vitral.no, www.vitral.no
Vitral Germany, Chilehaus, Fischertwiete 2, D-20095 Hamburg, Germany, +49 40 32005 484, E-mail: info@vitral.de, www.vitral.de
Vitral UAB, Pramonės 8, 94102 Klaipėda, Lithuania, +370 46 432812, E-mail: vp@vitral.dk, www.vitral.com