Xtralite and Vitral are now a part of VELUX Commercial, and we are delighted to welcome you to our new website. Here, you will find our complete portfolio of daylight solutions and services for industrial, commercial and public buildings.

Kerb System for Vario Continuous Rooflights

Kerb solutions for every roof structure

The adjustable kerb system and optional roof membrane connection system enable for the right fit in every roof structure.

Vario continuous rooflight kerb system

kerb system for continuous rooflights Vario

Kerb system for continuous rooflights Vario

kerb detail of thermo and insulation roof

Kerb detail of thermo and insulation roof

Detail of conventional kerb and roof membrane connection

Detail of conventional kerb and roof membrane connection

Manufactured from steel and available in standard heights of 250 to 700 mm, the adjustable kerb features a vertical countour that makes it suitable for use with all Vario Continuous Rooflights.

With an outwardly sloping 8° incline of the kerb head, our kerb ensures reliable drainage of rainwater and condensation.

It can be furnished with up to 100 mm roof insulation to enhanced thermal performance. As an option we provide rock wool insulation, tailored to the kerb geometry to prevent thermal breaks and provide enhanced thermal performance.
The kerb system is optional available for insulation and thermo roofs.


OPTIMAL connection system L

connection system Optimal L for Vario rooflight

Connection system Optimal L for Vario rooflight

kerb and connection system Optimal L for Vario rooflight

kerb and connection system Optimal L for Vario rooflight

The OPTIMAL connection system L creates a permanent and secure connection between the roof sheeting and the kerb. The kerb system is optional available for insulation and thermo roofs.

The OPTIMAL connection system L is available as an optional extra, at an additional charge.


Roof membrane connection Vario Therm rooflight

Roof membrane connection Vario Therm rooflight