VISS Basic roof glazing

Welded steel constructions come into their own in roof glazing. With VISS Basic, Jansen offers cost-effective and aesthetically outstanding system solutions for support-free roof constructions. The free choice of supporting profiles allows the design of large span rooflights.

Materials/surface finishes

  • Uncoated steel, suitable for hot-dip galvanising, powder-coating or stove-enamelling
  • Stainless steel in combination with VISS Basic and VISS Ixtra

Support structures

  • VISS Basic: commonly available hollow profiles, IPE sections etc.
  • VISS Ixtra: tailor-made, laser-welded, sharp-edged profiles

Construction types

  • Mullion-mullion-transom construction
  • Mullion-transom-mullion construction
  • Welded and/or push-fit construction
  • Segmental glazing, concave and convex


  • Combination of VISS Basic, VISS Ixtra beams and VISS system profiles
  • Highly thermally insulated with HI insulating profile
  • Structural glazing
  • Easy fixing of solar screening devices
  • Windows and doors within curtain walls

Special technical features

  • Face width from 50 mm
  • Installation depth to meet structural engineering requirements
  • Thickness of infill elements, 6 - 70 mm
VISS Basic roof glazing