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A Guide to Different Types of Rooflights

 In Rooflights

Choosing the correct types of rooflights is crucial for households and businesses. They impact numerous aspects of a building, like reducing the energy bills, improving the carbon footprint, and decreasing the dependency on artificial lighting. At Williaam Cox, we have over five decades of experience working on new and existing projects to ensure they have the best rooflight system in place.

What are the main types of rooflights Williaam Cox provide?

Understanding the different rooflights we offer to achieve your specific goal, whether for a household or commercial premises, is essential. It can be easy to be overwhelmed by the variety of styles on offer and how they match your specific needs. There are numerous variations of rooflights available, including:

  • Polycarbonate Domes
  • Flat Glass Rooflights
  • Continuous Polycarbonate Rooflights
  • Modular Glass Link Rooflights
  • Bespoke Glass Rooflights

Williaam Cox Rooflights

At Williaam Cox, we specialise in a wide range of rooflights for flat roof systems, including our Standard Rooflight ranges, Access Hatches, Continuous Rooflights and Bespoke Roof Glazing solutions. This article will explore the specific advantages of each of these types of rooflights.

Standard Polycarbonate Dome Rooflights

Our Standard Polycarbonate Dome Rooflights are specifically designed to combine affordability and style with thermal performance while meeting all regulatory requirements. Our range of standard Polycarbonate Dome Rooflights is our ‘Williaam Cox Mark 3’ range, which is available in a wide range of standard sizes and glazing options such as Double, Triple and Quad glazed polycarbonate. The Mark 3 range offers various ventilation and opening options such as trickle ventilation, manual opening, and electrical opening. The Mark 3 Range can be installed with our proprietary upstand or directly to a builder’s curb.

Standard Flat Glass Rooflights

Our Standard Flat Glass Rooflight range is our ‘Williaam Cox GlassLite’, our newest range of standard rooflights. Constructed from a thermally broken aluminium frame finished in a stylish RAL7016 finish. Our GlassLite units are glazed with double-glazed glass, which includes a laminated inner pane of glass which provides safety for building occupants. Our standard Flat Glass Rooflight range is available in various sizes with various ventilation and opening options such as trickle ventilation, manual opening, and electrical opening. The Williaam Cox GlassLite range can be installed with our proprietary upstand or directly to a builder’s curb.

Continuous Polycarbonate Rooflights

Our Continuous Polycarbonate Barrel Vault Rooflights are designed for commercial and industrial sectors. The continuous rooflights are excellent for evenly distributing natural light throughout the workplace. They are regarded as one of the best rooflight systems available for larger openings as they can be applied to a wide range of commercial settings, from warehouses to hospitals. Essentially, continuous rooflights are suitable for any premises where vertical glazing is not practical. Our continuous polycarbonate rooflights are constructed from a thermally broken aluminium frame available in mill finish as standard, with PPC finishes available on request. Our Standard Barrel Vault Rooflights are available with triple glazed polycarbonate or structured polycarbonate glazing options.


Modular Glass Link Rooflights

Our Modular Glass Link Rooflights are designed for both residential and commercial sectors. They are premium quality, factory-assembled glass rooflight system with individual modules that link together on site. We supply these rooflights to a span of 3800mm in width and an unlimited length. Our Glass Link Rooflights are PPC finished as standard in RAL7016 externally and RAL9010 internally with a thermally broken aluminium frame and double glazed glass. They are suitable for installation at pitches from 2 – 35 degrees.

Modular Glass Link Rooflight

Bespoke Roof Glazing Solutions

We have a variety of roof glazing solutions available at Williaam Cox. Our Flatglass Roof Glazing Solutions are manufactured from high-quality aluminium and designed for openings of 2600mm wide with no transform. We also supply and install a thermally broken extruded aluminium rooflight system known as the ‘Williaam Cox Laantherna’, available in mono pitch and dual pitch options. We also design, manufacture and install bespoke rooflight systems based on the Schuco FWS50 and FWS60 framing systems.

Different Types of Rooflights in Commercial Settings

At Williaam Cox, we specialise in designing bespoke rooflights for various commercial settings. We have worked nationwide with Irish businesses to ensure the premises have the highest quality rooflights.


Rooflights provide multiple benefits for school teachers and pupils as natural light reduces stress, improves concentration, and promotes learning. We regularly design rooflights for primary and post-primary schools in Ireland to enhance their natural light. For example, we worked with the national school in Cartron, Sligo. The rooflights chosen for this project were Triple Glazed Clear Williaam Cox Barrel Vaults and Mark 3 Rooflights.


Rooflights enhance the appearance of the building and reduce energy costs. Our expert team will design rooflights that drastically improve the internal and external appearance of the building to make the space more pleasant for guests and staff. Our rooflights are perfect for hospitality settings, including hotels and hostels. We worked at the Grand Hotel in Tralee, installing UV Coated Double Glazed Polycarbonate Cassette Rooflights.


Rooflights play an essential role in improving the natural light in hospitals and nursing homes. They enhance the quality of the healthcare facility for both patients and staff. Natural light is proven to improve recovery times and well-being. It is important to note that some patients will also have reduced mobility, preventing them from spending time outside, so bringing natural light into the building is essential.

We have worked with Stewarts Hospital in Dublin to design bespoke Williaam Cox Mark 3 Rooflights with Integrated Trickle Ventilation. We also worked with Tymon North Nursing Home with Schuco FWS50 Rooflights.

Learn More

If you are interested in learning more about the different types of rooflights available in Williaam Cox and which would be best suited for your premises, please contact a member of our team today. We will be happy to discuss the various options available.