Description

Velux Sun Tunnels are for use on roofs of buildings to provide natural light into interior spaces within buildings. Velux offer four models of Sun Tunnels: TWF which features flexible internal ducting, TWR, TLR and TCR which use rigid ducting. All models are suitable for roof pitches between 15° and 60°, however the TCR model can be used at pitches between 0° and 60°. Some models can also be used to provide ventilation. Velux Sun Tunnels can be identified by their brand markings on the units and the packaging. 

Velux Sun Tunnels are aluminium-framed, double-glazed roof windows with a light transmission tunnel and ceiling mounted light diffuser. Velux Sun Tunnels are designed to provide natural light into small areas such as corridors, hallways, walk-in wardrobes or spaces where it is not possible to install a Velux Skylight.

Scope

Velux Sun Tunnels (TWF, TWR and TLR) are for use on buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regard to building height and maximum floor plan area; and,
• with roof structures designed and constructed to meet the requirements of the NZBC; and,
• with pitched roof cladding types and profiles specified in NZBC Acceptable Solution E2/AS1; and,
• with a roof pitch between 15° and 60°; and,
• situated in NZS 3604 Wind Zones up to, and including, Extra High.
• on buildings designed for up to a 1 kPa snow loading.

Velux Low-Pitch Sun Tunnels (TCR) are for use on buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regard to building height and maximum floor plan area; and,
• with roof structures designed and constructed to meet the requirements of the NZBC; and,
• with pitched roof cladding types and profiles and minimum pitches as specified in NZBC Acceptable Solution E2/AS1; or,
• for use on flat or nominally flat roofs making use of membrane roof systems; and,
• with a roof pitch between 0° and 60°; and,
• situated in NZS 3604 Wind Zones up to, and including, Extra High.
• on buildings designed for up to a 1 kPa snow loading.

Handling and storage of all components of Velux Sun Tunnels is under the control of the Velux Sun Tunnel installer. Components must be kept dry and under cover at all times. Care must be taken to avoid surface damage to the window components and flashings during the installation process.

The installation of Velux Sun Tunnels must be completed by installers trained by Velux New Zealand Ltd, or by competent, experienced tradespeople with an understanding of roof window installation and weathertightness details.

Velux Sun Tunnels must be installed in accordance with the Reference Document supplied by Velux New Zealand Ltd, and this Product Certificate.