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Fixed Flat Glass Rooflights

Sleek Daylighting Solutions for Flat Roofs

Enhance your flat roof with natural light and contemporary design using our range of fixed flat roof skylights at Sterlingbuild. Designed for spaces where ventilation isn’t required, fixed skylights offer exceptional performance, durability and a clean architectural profile, making them ideal for homes, offices, extensions, multi-storey builds and commercial projects.

We stock trusted, high-quality fixed skylights from leading manufacturers including VELUX, VEW, RoofLITE+, Cox Dome, Brett Martin and Signature, giving you the choice of sizes, glazing options and styles to suit any specification.

What Are Fixed Flat Roof Skylights?

Fixed flat roof skylights are non-opening rooflights that are permanently sealed. They are engineered to:

  • Maximise daylight without heat loss or drafts
  • Create bright, welcoming interiors
  • Offer a low profile roof design
  • Deliver strong weather resistance

Because they don’t open, fixed skylights are a great choice for areas where only natural light is needed, such as corridors, living rooms, kitchens, stairwells and commercial spaces.

Extensive Choice from Top Brands

Our fixed skylight range includes:

Whether you’re replacing an old unit or specifying a new installation, we have fixed skylights to meet standard and custom size requirements.

Benefits of Choosing Fixed Flat Roof Skylights

  • Bright, natural light - Flood interior spaces with daylight to improve ambience and reduce reliance on artificial lighting.
  • Energy efficiency - High-performance glazing options help retain heat, lower energy bills and improve comfort.
  • Minimal maintenance - With no moving parts, fixed skylights require very little upkeep.
  • Architectural appeal - Sleek, contemporary design complements modern builds and enhances property value.

Find Your Perfect Fixed Skylight

Use our intuitive filters to browse by brand, size, frame finish and glazing type, or speak with our specialists to help you choose the right solution for your project.

Bring more natural light into your space with outstanding fixed flat roof skylights from Sterlingbuild. Explore the range now.

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Products

EOS Fixed Flat Rooflight - Premium Made to Measure Glass Rooflights
More Sizes Available

EOS Fixed Flat Rooflight - Premium Made to Measure Glass Rooflights

From £995.92
Product Code: EOSFFRLMTM
  •        Made to measure sizes available
  •         Suitable for flat roofs from 0–15 degrees
  •         0.97 W/m²K system U-value
  •         Optional insulated upstand
  •         Standard toughened or laminated safety glass options
  •         Handmade in Britain

·        

Est. delivery: 15-20 Working Days

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New
VELUX ISU & CFU Fixed Flat Glass Rooflight
More Sizes Available

VELUX CFU & ISU Fixed Flat Glass Roof Window

From £619.40
Product Code: VISU2093CFUF
  • Earn £30 In Rewards April & May
  • Suitable for 2-15° Flat Roofs
  • Double & Triple Glazed Options
  • Claim £15 VELUX Rewards
  • 13 Size Options
  • Complete Package

Est. delivery: 2-5 Working Days

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Special Offer
VELUX ISU CFU Flat Roof Window
More Sizes Available

VELUX CFU & ISU Fixed Curved Glass Flat Roof Window

From £738.72
Product Code: VISUCFUF
  • Earn £30 In Rewards April & May
  • Curved Glass Top Suitable for 0-15° Flat Roofs 
  • Available in Double & Triple Glazed Options
  • 13 Sizes Available
  • 10 Year Warranty
  • Excellent Performance

Est. delivery: 2-5 Working Days

More Options
Special Offer
VELUX ISD & CFP Polycarbonate Dome Window
More Sizes Available

VELUX CFP & ISD Fixed Polycarbonate Dome With Glazing

From £477.28
Product Code: VCFPISDF
  • Earn £15 In Rewards April & May
  • Double Glazed with Dome Cover
  • 10 Year Warranty
  • 9 Sizes 
  • Clear or Opaque Cover available
  • Good Daylight Area & Classic Design

Est. delivery: 2-5 Working Days

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Special Offer
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