VELUX Flat glass rooflight new generation reddot winner 2021
See gallery

CFU--, CVU--, ISU 2093

New Generation
Flat glass rooflight 

From £626 excl. VAT

For roof pitch 2-15°

The new generation VELUX glass rooflight with flat glass will bring the magic of daylight into your home. The elegant glass-to-edge design with flat and straight lines will almost become one with the roof. The unique design with a slim frame and invisible sash provides maximum daylight and a beautiful design from inside the home - even with a blind installed.
  • Maximum daylight area
  • State-of-the-art design: winner of the Reddot award 2021 in the category “Product design”
  • Excellent energy performance with 2- or 3-layer glazing

Combine this product with

VELUX Anti heat blind for flat glass rooflight

Anti-heat blind

This blind provides light dimming and heat protection so your room temperature stays cool and comfortable.
VELUX electrical vented base

Electrical vented base

Consider an electrical vented base unit for added ventilation in the room and a better indoor climate.

Product details

The steps below will guide you through your product options.

Step 1 - Top unit

The New Generation flat glass top unit features elegant, award-winning glass-to-edge design along with great technical performance. Suitable for 2°-15° roof pitch. The outer glass pane is toughened and weather-resistant for reliable protection against the elements and extra peace of mind.

VELUX top unit for flat glass rooflight

Step 2 - Choose a base unit

Unique window construction with a slim frame and invisible sash for maximum daylight. The white polyurethane offers a maintenance-free surface and the laminated glass unit ensures safety. Available with 2- or 3-layer glazing unit for excellent energy performance and sound reduction.


Fixed base unit is ideal for bringing in daylight without adding extra ventilation. The base is optimized for a discreet installation of blinds, without compromising daylight influx. It is also burglary-resistant, class 2 acc. to EN 1627.
VELUX Base Unit for flat glass rooflight

Electric ventilation

Electrically-vented frame provides fresh air at the touch of a button. It comes with a pre-installed rain sensor and is compatible with VELUX ACTIVE. The motor is integrated in the frame and the base is optimized for a discreet installation of blinds, without compromising daylight influx.VELUX Base Unit for flat glass rooflight

Step 3 - Choose installation add-ons if needed

Extension kerb

Use the extension kerb for a higher installation in the roof.
(ZCU 0015)

Frame fixing kit

Frame fixing kit for secure mechanical fixation of the roofing material to the window frame. The frame fixing kit comes in black colour for an aesthetically appealing finish.
(ZZZ 210U)Frame fixing kit


Lining for flat roof for great interior finish. This all-in-one solution includes PVC panels, vapour barrier and facings.
(LSF 2000)

VELUX dome, lining

Step 4 – Complete your flat glass rooflight

VELUX blinds are easily installed with the window both for heat protection and blackout purposes.

Blackout blind

Completely blocks out sunlight or outside light – day or night.
  VELUX Blackout blind

Anti-heat blind

Diffuses the sun’s rays to reduce over-heating.

VELUX Anti-heat blind

VELUX INTEGRA® power supply unit

Supply unit for operating blinds on fixed flat roofs.
(KUX 110 UK)

Step 5 – Consider upgrading your indoor climate

VELUX App Control

Control your indoors from anywhere
VELUX App Control gives full control of all VELUX INTEGRA® windows and blinds anytime and anywhere, right from the smartphone or through voice control. Create personal scheduling to suit your daily routine.


Indoor climate control
VELUX ACTIVE with NETATMO adds sensor-based automation to the control options for VELUX INTEGRA® windows and blinds. With live tracking of the air quality, humidity and temperature in the home, as well as data from local weather forecasts, it will automatically act to help improve and maintain a healthy indoor climate.

Sizes and prices

Windows are available in the following sizes (W x H)








Example of prices 

You can find the complete price in the brochure.


100x100 120x120
Code Description


Top unit
 ISU  2093 Flat glass top £320.00 £470.00 £611.00 
Base unit
 CFU -20Q Fixed base unit 2-layer glazing £306.00 £450.00  £549.00 
 CFU -25Q Fixed base unit 3-layer glazing £398.00  £585.00  £714.00 
 CVU -20U Vented base unit 2-layer glazing £846.00 £990.00  £1,089.00 
 CVU -25U Vented base unit 3-layer glazing £938.00 £1,125.00 £1,254.00 
Installation accessories
 ZCU 0015 Extension kerb 150 mm with flange £180.00  £212.00  £252.00 
 ZCU 1015 Extension kerb 150 mm without flange  £180.00 £196.00  £236.00 
 LSF 2000 Lining for flat roof window £245.00  £292.00  £315.00 
 ZZZ 210U Frame fixing fit £41.00  £48.00  £53.00 
 BBX 0000 Vapour barrier £25.00  £29.00  £32.00 
 DSU -- Blackout blind solar-powered £261.00  £284.00  £295.00 
 MSU -- Anti-heat blind solar-powered £261.00  £284.00  £295.00 
Smart home accessories
 KUX 110 UK VELUX INTEGRA® power supply unit £105.00
 KIX 300 EU2 VELUX ACTIVE with NETATMO Starter Kit £183.33 
 KIG 300 EU  VELUX App Control starter kit £89.00 
All prices are excl. VAT.

Ready to buy?

Blinds for flat roof window

For professionals

Get technical information about this product or join our installer training program.