Description
Table of Contents
Construction
White PVC frame and sash components with extruded gaskets. White framed insect screen included as standard. VCM needs a custom flashing made by roofer, see preparation guide overleaf.
Wireless control
The VCS Skylight comes complete with a pre-programmed radio frequency controller for skylight operation. Externally mounted rain sensor automatically closes the skylight once rain is detected**.
VELUX ACTIVE
Indoor climate control (sold separately)
VELUX Active operates on 2.4GHz and is compatible with modern ‘smart’ modems. (select the 2.4GHz channel in dual mode on your modem).
High Performance Double Glazing

Benefits:
- Radiant heat block: Complete window Glass only
- UV Harmful rays block approx 99%
- WERS rating 5 stars
- Double layer of Low-E³ coating.
- 10 year warranty on insulated glass seal.
- Reduced cleaning frequency.
Australian Standard AS1288
Laminated glass (standard with VCS) must be used
for skylights installed 3m or more above floor level.
NEAT™ Photocatalytic Coating
- Silicone Dioxide/Titanium Dioxide coating reacts with the sun’s UV rays to decompose surface organic dirt before rinsing away with the next shower of rain, thereby reducing cleaning frequency.
- The coating also makes the glass surface smoother, so water disperses evenly, sheets off, and evaporates quickly; thereby minimising water spotting on the pane.
* VELUX recommends VCM is installed with a slight pitch (e.g. 3°-5°) to help reduce condensation build-up and water ponding on the glass.
** Winder handle and extension rods to be purchased separately. Details overleaf.
Solar powered blinds
The thermal performance of VCS Skylights can be enhanced with the inclusion of a blind. Tailor-made to fit perfectly to each size of skylight, they are easy to install and are supplied with white powder-coated aluminium side channels allowing blinds to be positioned at any point on the skylight. No additional electrical control system required when adding blinds. (Blinds supplied with wireless wall-mounted keypad).

Honeycomb blinds
Adds a decorative effect.
- Colour: White on both sides.
- Materials: Double layered pleats (polyester) form a ‘honeycomb’ structure. Inner faces of honeycomb structure have aluminium coating. White powder-coated aluminium side channels and top cover.
- Provides near total light reduction.
- Reduce heat by approx 70%.^
- Easy to install.
*Blinds sold separately.

Preparation guide for custom-made flashing
Note: If timber hob is greater than 38mm the Gyprock will encroach past the edge of the internal frame.
*Skylight must be installed with timber hob and Gyprock, as shown (typical installation), to achieve 2.9 U-value rating.
Important considerations
VELUX VCS Skylights can be used for flat and low sloping roofs. The low profile external covering and glazing seal prevents water infiltration even at 0°. To help reduce water ‘ponding’ on the glass a slight pitch (e.g. 3°-5°) is recommended.
- VELUX VCS does not come with a flashing kit but can be used with a variety of custom-made curb flashings. Contact VELUX or a local flashing manufacturer for more information.
- When installing VCS in an above/below combination, solar panel needs to be relocated using relocation kit (supplied with skylight).
Opening Restrictions
NCC Vol 1 & 2 regulations (Prevention of Falls from Windows – Balustrades & Barriers): contact VELUX for information relating to restrictor devices for withinreach opening skylights.
VCS – frame and glazing dimensions

Skylights can only be installed as per orientation depicted above.
‡ Weight does not include flashing.
^ Based on VELUX internal testing with 3076 model Roof Window.
VCS technical performance
AS4285 SKYLIGHT– Cyclonic and Non-Cyclonic Tests | Pressure Rating –2.16kPa |
AS1288 OVERHEAD GLAZING | Laminated inner pane |
AS3959 BUSHFIRE | Attack Level 40^ |
NCC BOUNDARY SEPARATION† | Class 1 and Class 10 buildings: Within 900mm of a boundary wall Class 2 to Class 9 buildings: 3 metres from a boundary wall^^ |
VELUX Skylights are deemed non-combustible by CSIRO and thereby comply with NCC boundary separation requirements.
* Tests performed on skylight installed with #8 roofing screws (no screws provided). Not certified for NT DTCM.
† CSIRO assessment report available on request. VELUX recommends consultation with relevant authority before work commences. Skylight assessed in closed position.
^ Roof pitch 0°-60° Skylight only. Custom-made flashing required. Skylight tested in closed position (VCS BAL assessed – based on VSS results), metal flywire mesh protection may be required for opening apertures (consult local council).
^^ Skylight cannot be closer than 3m unless the boundary is adjoining a road or public place. Consult NCC for further details.
VELUX Simulated Tests ††ASTM E822-2009.
†† ASTM E822-2009 standard practice for determining resistance of Solar Collector Covers to Hail impact with propelled ice balls. Hailstone test not performed on solar panel.
VCS Openable Skylights have been energy rated in accordance with the Skylight Energy Rating Scheme (WERS).
Maximum 5 stars Summer Ratings
4.5 out of 5 stars for Winter Rating.
4.5 out of 5 stars for Cool Daylight in Summer.
U-value (W/m2K) | Complete skylight 2.9‡ Glass only 1.93 |
Solar Heat Gain Co-efficient | Complete skylight 0.24 Glass only 0.28 |
Visible Light Transmittance | Complete skylight 0.55 |
Luminous Efficacy (Ke = VT/SHGC) | Complete skylight 2.29 |
Acoustic performance | Complete skylight 31dB# |
Figures generated by AFRC accredited simulators. Figures based on complete skylight: nominal size 1275mm (W) x 1275mm (H).
‡ See required installation method overleaf.
# Based on Rw value tested to A1276.1.
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