Fixed Flat Roof Skylights

The VELUX Fixed Flat Roof Skylight is designed for homes with flat or low-pitch roofs to transform and improve virtually any space with daylight.

The ISU top cover with CurveTech glass lets in more daylight, easily drains rainwater, and stands out externally as a modern addition to roof surfaces.

  • 0° - 15° Roof pitch
  • Deck-mounted
  • Tempered glass top cover is virtually scratch-proof, providing a durable layer of protection
  • Insulated PVC Frame
  • CFU fixed base unit with laminated glass for added safety, sound control, and thermal protection

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Product Details

  • 1
    ISU cover with CurveTech tempered glass
    Innovative curve shape lets rainwater easily drain off, ensuring clearer sky views and more daylight, even on 0°-pitched roofs. 
  • 2
    Insulated PVC curb and two-layer pane
    An ideal combination of insulating PVC frame and double-paned, low-energy inner glass ensures heat doesn’t escape, so your ideal indoor climate is maintained.
  • 3
    Maintenance-free design
    The curved glass shape provides natural drainage of rainwater – no need to regularly clean the surface – while toughened glass makes it virtually impervious to damage from the elements.
  • 4
    Thermal Values
    The values are obtained in accordance with NFRC procedures.

    U-factor = 0.30
    SHGC = 0.42
    Visible Transmittance (Vt) = 0.58

Sizes for CurveTech Glass

CFU Size Code
 
060060
 
080080
 
090060
 
120090
 
120120
 
090090
 
100100
 
150100
 
150150
 
200100
Rough Opening (W"xH") 2311⁄16 x
2311⁄16		 319⁄16 x
319⁄16		 351⁄2
x
2311⁄16		 475⁄16 x
351⁄2		 475⁄16 x
475⁄16		 351⁄2
x
351⁄2		 397⁄16 x
397⁄16		 591⁄8
x
397⁄16		 591⁄8
x
591⁄8		 783⁄4
x
397⁄16
Exterior frame (W"xH") 321⁄16 x
321⁄16		 3915⁄16 x
3915⁄16		 437⁄8
x
321⁄16		 5511⁄16 x
437⁄8		 5511⁄16 x
5511⁄16		 437⁄8
x
437⁄8		 4713⁄16 x
4713⁄16		 671⁄2
x
4713⁄16		 671⁄2
x
671⁄2		 873⁄16 x
4713⁄16