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VELUX atrium solutions consist of multiple rows of ridgelights or longlights, supported only by structural beams, that form large glazed areas of identical looking venting and fixed units. Designing your building with an atrium longlight or atrium ridgelight solution will help you benefit from all the functionalities offered by the Modular Skylights system, such as integrated chain actuators, blinds and low pitch.
Please note that the supporting sub-structure of the atrium is up to constructional consecrations and not supplied by the VELUX Group.
Atrium roof glazing consists of multiple rows of ridgelights or longlights, supported only by structural beams, forming large glazed areas of identical looking venting and fixed units. Designing your building with atrium will help you benefit from all the functionalities offered by VELUX Modular Skylights, such as integrated chain actuators, blinds and low pitch. This comprehensive functionality allows your atrium to perform much better than most traditional roof glazing.
|Air permeability class (?)||Class 4|
|Features (?)||Motorized smoke venting skylight module|
|Flexural Strength (?)||1000 N/mm2|
|Max G-Value (?)||0.6|
|Max Light Transmittance (?)||0.79 %|
|Max U-value (Overall) (?)||1.5 W/m²K|
|Min G-Value (?)||0.13|
|Min Light Transmittance (?)||17 %|
|Min U-value (Overall) (?)||0.86 W/m²K|
|Resistance to fire from outside (?)||BROOF (t1), BROOF (t4)|
|Resistance to wind load (Class) (?)||Class C5|
|Watertightness (?)||1200 Pa|
|Wind Resistance (?)||1200 Pa|
|Size & Weight|
|Max Length (?)||2800 mm|
|Max Opening Vent Width (?)||4500 mm|
|Max Pitch (?)||40 Degrees|
|Max Width (?)||1000 mm|
|Min Length (?)||800 mm|
|Min Opening Vent Width (?)||2000 mm|
|Min Pitch (?)||25 Degrees|
|Min Width (?)||675 mm|
|Certifications & Ratings|
|CE Marking (?)|
|External fire performance (?)||Broof(t4),Broof(t1)|
|Fire Classification (European BS EN) (?)||REI30|
|Reaction to fire (?)||Class B|
|Resistance to Fire EN 13501-2 (?)||EI30, REI30|
|Watertightness (Class) (?)||E1200|
|Materials & Finishes|
|Finish(es) (?)||Powder Coated|
|Glazing Material (?)||All glazing units include a toughened outer glass layer and a 3+3 or 5+5 mm safety inner glass layer with two layers of 0.38 mm interlayer PVB foil. The triple-glazing units have a heat-strengthened middle glass layer. Heat strengthened glass is also util|
|Glazing Type (?)||Triple, Double|
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