VELUX FCM 3434 Flat Roof Skylight 970x970mm
Original price was: $605.78.$502.79Current price is: $502.79.
The VELUX FCM 3434 is a fixed double-glazed flat-roof skylight measuring 970 × 970mm, with approximately 876 × 876mm of visible glass (0.77m²). It is a generous square skylight with a stronger daylight presence than 3030, making it well suited to bedrooms, bathrooms, dining rooms, living rooms. Suitable for tile and metal roofs from 0–60° when installed on the correct kerb/upstand with matching custom flashing for tiled, Corrugated, TrimDeck or Klip-Lok roof applications.
VELUX FCM 3434 Flat Roof Skylight – 970 × 970mm
The VELUX FCM 3434 is a generous square skylight with a stronger daylight presence than 3030. Its 970 × 970mm overall size and approximately 876 × 876mm visible glass area (0.77m²) make it well suited to bedrooms, bathrooms, dining rooms, living rooms, stairwells. It can be installed on suitable tile or metal roofs when the kerb/upstand and custom flashing are designed for the actual roof.
Why Choose the VELUX FCM 3434?
The near-one-metre square format suits rooms where a centred, architectural sky view is preferred over a long rectangular opening. This size is especially useful for bedrooms, bathrooms, dining rooms, living rooms, stairwells.
Rooms FCM 3434 Can Suit
- Bedrooms
- Bathrooms
- Dining Rooms
- Living Rooms
- Stairwells
- Studios
What This Size Gives You
- 0.77m² approximate visible glass area
- 876 × 876mm approximate visible glass dimensions
- Fixed design for daylight without ventilation
- Custom roof flashing matched to the actual roof
- Supply-only or professional Melbourne installation pathways
FCM 3434 for Tile, Corrugated, TrimDeck & Klip-Lok Roofs
FCM is a curb-mounted skylight. It sits on a correctly built kerb/upstand and the flashing integrates that raised base with the surrounding roof. That allows suitable FCM installations on both tiled and metal roofing when the detail is properly designed.
Pair FCM 3434 With the Matching Custom Flashing
VELUX specifies that FCM skylights require custom-made flashing. Central Skylights manufactures matching flashing for FCM 3434, allowing the skylight and roof-specific flashing to be ordered from one supplier.
For metal roofs, choose Corrugated, TrimDeck or Klip-Lok. For tiled roofs, the flashing and kerb/upstand need to coordinate with the surrounding concrete or terracotta tiles. Prefabricated and Flat Pack flashing options are available, with backflash where the roof detail calls for additional water management.
Size: 970 × 970mm
Roof options: Tile, Corrugated, TrimDeck & Klip-Lok
Supply options: Prefabricated or Flat Pack, Colorbond colour selection and backflash options.
Configure Matching FCM 3434 Flashing →See VELUX FCM Skylights Integrated Into Real Roofs
Roof pitch, kerb height, flashing and drainage matter as much as the glass itself. These genuine Central Skylights examples show metal-roof and tile-roof installation principles.
Images show genuine Central Skylights roof work. Skylight sizes shown may differ from FCM 3434 and are used to demonstrate roof-integration and flashing principles.
Not sure whether FCM 3434 is the right size?
Send us room, ceiling and roof photos. We can help compare size, tile or metal roof flashing, and fixed versus opening options before you order.
VELUX FCM 3434 Fixed Flat-Roof Skylight
FCM 3434 is a fixed, non-opening glass skylight for projects where natural daylight is the priority. The near-one-metre square format suits rooms where a centred, architectural sky view is preferred over a long rectangular opening.
VELUX specifies the FCM range for roof pitches from 0° to 60°. High-performance double glazing blocks approximately 70% of radiant heat and provides approximately 99% protection from harmful UV, while NEAT™ exterior coating helps reduce cleaning frequency.
Choose FCM 3434 When
- You want daylight without an opening function
- A generous square skylight with a stronger daylight presence than 3030
- Your roof can accommodate a raised kerb/upstand
- You want matching custom flashing for tile or metal roofing
- You want supply-only or a Melbourne installation option
Plan Before Ordering
- Check roof framing and available opening
- Identify tile or exact metal roof profile
- Confirm approximate roof pitch and water direction
- Plan the internal shaft and ceiling opening
- Plan lifting and access as skylight size increases
FCM 3434 Size, Glass Area & Daylight
FCM 3434 measures 970 × 970mm overall, with approximately 876 × 876mm of visible glass and around 0.77m² of visible glass area.
| VELUX size code | FCM 3434 |
|---|---|
| Overall skylight size | 970 × 970mm |
| Visible glass size | Approx. 876 × 876mm |
| Visible glass area | Approx. 0.77m² |
| Operation | Fixed / non-opening |
| Typical room fit | bedrooms, bathrooms, dining rooms, living rooms, stairwells, studios |
FCM 3434 for Tile & Metal Roofs
FCM 3434 requires a custom roof interface rather than a standard boxed flashing kit. The flashing should match the roof material, pitch, drainage direction and the kerb/upstand supporting the skylight.
Metal Roofs
- Corrugated Colorbond roofing
- TrimDeck roofing
- Klip-Lok roofing
- Other identifiable profiles by assessment
- Backflash where the roof detail requires it
Tile Roofs
- Concrete roof tiles
- Terracotta roof tiles
- Custom flashing around the raised FCM kerb/upstand
- Tile courses and drainage need to be coordinated
- Existing roof condition should be checked before cutting
Kerb / Upstand, Orientation & Replacement Planning
FCM is curb-mounted. The skylight sits on a properly constructed kerb or upstand, and the flashing connects that raised base to the surrounding tile or metal roof.
Before Ordering
- Confirm FCM 3434 and 970 × 970mm
- Identify tile or exact metal roof profile
- Check approximate roof pitch
- Check roof framing and access
- Confirm kerb/upstand construction with the installer
Replacing an Old Dome?
- Measure the existing roof opening
- Measure the old kerb/upstand
- Photograph the existing flashing
- Measure the internal shaft/throat
- Do not assume the nominal FCM size is a drop-in replacement
Compare FCM 3434 With Nearby VELUX FCM Sizes
If 970 × 970mm is not quite right, compare nearby sizes before ordering. Roof framing and room proportions matter as much as the nominal glass area.
A practical medium square skylight for bright, balanced daylight.FCM 3446970 × 1275mm
A generous rectangular fixed skylight for larger everyday rooms.FCM 46461275 × 1275mm
A large square feature skylight for a premium, balanced sky view.
VELUX FCM 3434 Specifications & Buying FAQs
| Model | VELUX FCM 3434 |
|---|---|
| Product type | Fixed curb-mounted / flat-roof skylight |
| Overall size | 970 × 970mm |
| Visible glass | Approx. 876 × 876mm |
| Visible glass area | Approx. 0.77m² |
| Operation | Fixed / non-opening |
| Roof pitch | 0°–60° when correctly installed |
| Roof materials | Suitable tile and metal roof applications with the correct kerb/upstand and custom flashing |
| Glazing | VELUX high-performance double glazing |
| Heat / UV performance | Approx. 70% radiant heat block and approx. 99% protection from harmful UV |
| Exterior glass | NEAT™ coating to help reduce cleaning frequency |
| Flashing | Custom-made flashing required and sold separately |
| Pickup | Noble Park, Melbourne |
| Delivery | Melbourne delivery available subject to order and destination |
Can FCM 3434 be installed on a tile roof?
Yes. A suitable concrete or terracotta tile roof can accommodate FCM 3434 when the skylight is supported on the correct kerb/upstand and the custom flashing is detailed to work with the surrounding tiles and drainage.
Can FCM 3434 be installed on Corrugated, TrimDeck or Klip-Lok?
Yes, subject to a suitable roof and installation design. Central Skylights manufactures made-to-order flashing for these metal roof profiles.
Does FCM 3434 include flashing?
No. VELUX specifies custom-made flashing for FCM skylights. Central Skylights sells the matching FCM 3434 flashing separately in Prefabricated or Flat Pack formats.
Does FCM 3434 open?
No. FCM 3434 is fixed and intended for daylight. The same overall size is available as VCM manual and VCS solar opening models.
Can FCM 3434 replace an old acrylic dome?
It can suit many acrylic-dome replacement projects, but compatibility depends on the existing roof opening, kerb dimensions, flashing, shaft and roof condition. Measure and photograph the existing installation before ordering.
Can I add a VELUX blind?
Yes. VELUX lists FCM 3434 among the sizes compatible with the FSCC solar honeycomb blind range. An FCM accessory tray is required when fitting the blind to an FCM skylight.
FCM 3434 vs VCM 3434 vs VCS 3434
The same 970 × 970mm size is available as fixed, manual-opening and solar-opening VELUX flat-roof skylights. Choose by whether the room needs daylight only or daylight plus ventilation.
Add a VELUX Solar Honeycomb Blind to FCM 3434
VELUX lists the 3434 size as compatible with the FSCC solar honeycomb blind range. When the blind is installed into an FCM skylight, the matching FCM accessory tray is also required.
Solar-powered remote blind for compatible flat-roof skylights. Select the matching 3434 size when ordering.
View FSCC blinds →Required when installing the compatible FSCC blind into an FCM fixed skylight.
View FCM blind trays →Choose the Skylight, Flashing & Installation Path Together
Central Skylights supplies genuine VELUX products and made-to-order custom flashing to homeowners, roofers, builders and renovators. Compare sizes, check the roof, then order supply-only or ask us to assess the installation.







Egbert Vincent –
It was a breeze to install and it really enhances the look!
Kenelm Kevin –
Looks perfect
Elmer Harold –
Love my skylights. Have six in house. Older units needed repair. Central Skylights replaced four in one day with no mess inside. Thanks for all!
Dai W –
Absolutely wonderful
Orborne –
Excellent, especially for the price!
Gideon T –
Great quality, good price
Ambrose V –
Thank for a really good product