VELUX VCM 3046 Manual Opening Flat Roof Skylight 870x1275mm

The VELUX VCM 3046 is a manually operated flat roof skylight designed for Australian homes with flat or low-pitch roofing. At 870 x 1275mm it is a large rectangular unit that maximises daylight intake and fresh air circulation, making it ideal for spacious living rooms, dining areas and open-plan kitchens. The handle mechanism opens the sash smoothly, so you can vent a large room and close it again without any electrics.

Key Features

• White painted interior wood frame and sash for a clean, classic look
• Grey aluminium external cappings for weather protection and durability
• High-performance double glazing with NEAT coating to reduce cleaning and maintenance
• Pre-installed insect screen keeps mosquitoes and flies out during summer ventilation
• Approximately 75% heat block for year-round comfort
• Manual handle opening for simple, reliable ventilation
• Laminated inner glass for safety, meeting Australian Standards
• Designed for flat roofs up to 15 degrees pitch with the correct flashing (sold separately)

Specifications

• Model: VELUX VCM 3046 manual opening flat roof skylight
• Size: 870 x 1275mm
• Type: manual opening, ventilating, for flat roofs
• Frame: white painted interior wood frame and sash
• Exterior: grey aluminium cappings
• Glazing: high-performance double glazing with NEAT coating
• Ventilation: manual handle, pre-installed insect screen
• Heat block: approximately 75%
• Roof type: flat or low-pitch up to 15 degrees
• Standards: meets Australian Standards for thermal performance

Applications

• Spacious living rooms, dining areas and open-plan kitchens
• Flat roof extensions and new builds where a pitched roof window will not fit
• Rooms where warm air collects near the ceiling in summer
• Spaces that want both daylight and controllable ventilation

What You Need To Complete The Installation

A flat roof skylight needs the correct flashing to stay weathertight. Contact our team to confirm the matching flashing kit for your roof type and pitch. For an installation beyond arm’s reach, the VELUX ZCT 300 control rod operates the skylight from floor level (confirm availability with the supplier). Browse the VELUX manual flat roof skylight range or the wider Velux Skylights range, and check the Skylight Accessories category for installation extras.

Frequently Asked Questions

How does the manual opening work?

The sash opens and closes with a smooth handle mechanism, so you can control the airflow without any electrics. For an installation within easy reach, the handle gives direct control. For higher ceilings, the VELUX ZCT 300 control rod operates the skylight from floor level; confirm with the supplier whether it is required for your ceiling height.

What roof pitch does it suit?

The VCM is designed for flat or low-pitch roofs up to about 15 degrees, with the correct flashing installed. The flashing is chosen for your roof material and pitch, so confirm the roof build-up with the supplier before ordering.

Does it need a flashing kit?

Yes. A flashing kit is required to make the skylight weathertight against the roof, and it is sold separately. Flat roof installations need the flashing matched to the roof membrane and any slope so water sheds cleanly away.

Does it come with an insect screen?

Yes. A pre-installed insect screen is included, so when the sash is open for summer ventilation, mosquitoes and flies stay out. It is a standard part of the manual opening unit.