Home > Companies > VELUX Commercial > A98 Triple Glazed Modular Rooflight

Prefabricated, modular panel based rooflight, with thermally broken aluminium profiles and an embedded polyurethane core. Based on Vitral's A74 rooflight system, with a larger format.

Features and benefits:

  • Smart design with slim, shallow profiles.
  • Allows maximum levels of natural light into rooms.
  • Relatively low profile depth of 98 mm.
  • Recyclable materials used.
  • Each panel can open without the need for extra framing.
  • Extremely sustainable, with low thermal transmittance (U-values).
  • Triple glazed, with warm edge spacers and Argon filled cavities.
  • Gaskets sit between panels and at junctions around the perimeter of the glazing, providing a thermal and air-tight seal.
  • Durable and flexible aluminium is used.
  • Provides a natural ventilation system.
  • The motor is fully integrated into the panel frame, completely hiding it from view.
  • Has a concealed opening mechanism which is embedded in the frame, making A98 seamless.
  • Can be tailored to suit project requirements.
  • Five-year warranty overall, two-year warranty for opening mechanisms.

CE marked in accordance with BS EN 14351-1.

Related literature

The following content references this product:

Standard product features

Profile size (d x w):

98 x 52 mm.


  • Panel frame: Aluminium alloy 6060.
  • Panel frame filling: Polyurethane.
  • Gaskets: EPDM and TPE.
  • Fittings: Grade 1.4301 (304) steel alloy.

Installation slopes:

  • Gabled, 25–60°: Single pitch rooflight.
  • Pitched, 15–90°: Double pitch rooflight.

Thermal transmittance (U-value):

  • Complete framed panel: 0.79 W/m²K.
  • Glass: 0.5 Wm²/K.



Maximum internal area of 3.0 m². Panel size depends on pitch and other static conditions, consult manufacturer for information.


Bespoke options are available. Consult manufacturer for information.


Seamlessly integrated, without the need for extra frames. Provides natural ventilation without loss of performance. Up to 50% of panels can be opening vents, or easily turned into opening vents at a later date, ensuring the space is cool and airy when required.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-25-99/410 Framed rooflights

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



VELUX Commercial


+44 (0) 1592 778916

Product reference

[A98, Atrium mono-pitch, upstand/ lean-to]
Single pitch, pyramid.
[A98, Atrium mono-pitch, in-laid]
Single pitch, vertical.
[A98, Atrium double pitch, self-supporting]
Double pitch.


 - Height:
[ ______ ]
 - Width:
[ ______ ]


[Low-emissivity insulated]
Over-laminated safety units with warm edge spacers and Argon filled cavities.
[Multi-coated solar control panels]
Optional, consult manufacturer and insert requirements.

Colour/ Finish

[Natural anodized]
[Powder coated, RAL]
Consult manufacturer and insert colour requirements.


Can be inserted on every second panel. Available from module width 651 mm to 1200 mm maximum.
[Not required]

Manufacturer details

Woodside Way,
Fife, KY7 4ND
Tel +44 (0) 1592 778916
NBS Plus
NBS National BIM Library