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Colt Braat 2000+ Rooflight System for two, three or four-sided support, incorporating frame components and glazing panels with composite gaskets.
The roof glazing system is a thermally broken, drained and ventilated construction.
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Configuration: Roof applications - [SELECT] double pitch / single pitch / pyramid /specials
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Angle of installation: ?[SELECT] 5º to 90º
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Dry glazing gaskets. Corners of internal gaskets are site bonded.
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System types
Braat 2000+ : standard system with following variations:
[SELECT] Classic (patent glazing system) / Optiglass (point fixed) ? details on request.
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Mullions are rectangular section and have a standard width of 60mm
Economy version = width 50mm
Some special shaped I profiles are available (sizes on request)
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Mullions: [SELECT] Depth 12mm / 75mm / 100mm / 125mm / 150mm
Section depends on spans and wind loads
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Cover plates for mullions: [SELECT] Visible fixings or hidden fixings
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Transoms: Various
Section depends on spans and wind loads
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Cover plates for transoms [SELECT]:
(i)Standard cover plates (angle of installation > 15º)
- Visible fixings or hidden fixings
(ii) Silicone seal and rosettes (angle of installation < 15º) ? cost premium solution
(iii) Low profile cap (angle of installation < 15º) ? depending on application.
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Framework strength and stiffness in accordance with BS 8118: Part 2:1991
Glazing selected in accordance with BS6262
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Self supporting structure or structure requires additional support by others.
Depends on spans and wind loads
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Aluminium parts to AlMgSi 0.5 F22 / 6063 F22
Aluminium parts to EN AW-6063 T66 (NEN-EN 573-3-94)
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Finishes [SELECT]:
Mill finish
Single polyester powder coating with 60 um thickness (Standard grade)
Double polyester powder coating with 90 um thickness (Marine grade)
Natural anodised with 25 um thickness.
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Where polyester powder coated: RAL standard / RAL non-standard (e.g. metallic)
to NEN-EN-ISO 12944; part 1-8; 1998
Where anodised to NEN-EN 12373; part 1-20; 1998-2001 or Hydro-thermal sealed to BS3987: 1991 by special request.
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RAL colour list to be provided on request
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Glazing: [SELECT] Single glazed / Double glazed / Polycarbonate / Insulated sandwich panels/ Solar panels for generation of electricity / Colt Kameleon, Firelight or Coltlite ventilators. (4mm to 40mm thickness can be accommodated)
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Capping sections and side flashings: [SELECT] uninsulated - single sheet aluminium / insulated with double faced aluminium
Panels skins in AlMg3 5754 (special materials on request ? e.g. J57S for anodising)
to EN AW-5754 (NEN-EN 485)
Panel insulation infill material: Polyurethane.
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End panels: [SELECT] Closed against a wall / into hipped glazing (by others) / hipped glazing
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Additional materials:
Bolts, screws etc.: stainless steel A2 grade self finish
EPDM Seals to BS 4255: part 1: 1986(92), DIN 7863: 1983-04 & NEN 5656: 1993
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Thermal performance of glazing bars:
Standard system (adequate for most applications): U value = 2.5 W/ m2 K
High specification system: For the most demanding applications: U value = 1.8 W/ m2 K
Note: The thermal performance of the whole system will depend on the glass specification, the size of the glass panes and the overall construction details.
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Testing: The Braat 2000 system has been project tested in accordance with CWCT standard test methods for curtain walling and has achieved the following:
Air permeability: 0.17 m3 / hour / m2
Water tightness using static pressure of up to 600 Pa: pass
Water tightness using dynamic pressure of up to 600 Pa: pass
Wind resistance-serviceability to +/- 1900 Pa: Pass
Wind resistance-safety to +/- 2870 Pa: Pass
Note: Performance of the overall rooflight is dependent on the individual project configuration, in particular sizes of the glass panes, interfaces to the building and the presence of ventilators. Therefore each project needs to be assessed for the necessity of a specific test if the type test results cannot be used.
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