Stella Rooflight offer a choice of glazing options

High Quality Glazing

skylight glazing example

Glazing makes the difference

When it comes to rooflights, the glass you choose can make a huge difference to the performance of your product.

Glass will typically make up 70% of your rooflight, and it's at the heart of controlling the flow of natural light, the level of safety and security, and of heat retention. It can even help protect furniture against fading.

A Stella conservation Rooflight can make a stunning feature in any property

Stella High Performance Glazing

Stella rooflights use a high performance glass unit that includes an outer pane of SKN176 to provide a high light transmittance. These modern high tech glazing units use solar control to maximise comfort, for a difference you may not see but will certainly feel.

Whether you’re looking for warmth, a peaceful night’s sleep or to enjoy a sun-filled room without overheating, our units offer the ultimate high-performance glass for every application.

Our double and triple glazed units also incorporate an internal pane of laminated safety glass that also offers the benefit of increased UV protection.

Our glass units use energy-efficient glass and can be incorporated into any style of rooflight.

Stella Rooflights are all made from stainless steel offering strength and longevity

Stella Rooflights Glazing - Where Innovation Meets Clarity

Discover the hassle-free world of self-cleaning glass and rooflights, revolutionising the way you experience natural light in your spaces.

We understand that cleaning rooflights, especially those in hard-to-reach places, can be a daunting task. That’s why we’ve incorporated cutting-edge self-cleaning technology into our Stella rooflights, ensuring a crystal-clear view without the stress.

A Stella Rooflight includes self cleaning glass as standard
Stella Rooflight offer the choice of high quality glazing with options to suit your home

Stella Rooflight and Saint Gobain Glass

At Stella Rooflight we can offer both SKN176 and SGG BIOCLEAN self-cleaning glass, depending on your needs.

Both products are a high-performance glazing with BioClean featuring a dual-action ‘hydrophilic’ and ‘photocatalytic’ coating and the SKN176 using EnduroShield.

This is a coating that protects glass against staining and etching during the construction process from exposure to cement slurry, dirt, dust and spills.

EnduroShield is a reliable long lasting solution providing an invisible easy to clean surface. This helps to keep glass cleaner for longer between cleans, and protects the glass from staining over time.

Our range of high performance glass offers a reliable and efficient solution for your rooflight needs.

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Watch Our Video to Learn More about Stella Rooflights and Self -Cleaning Glazing

Rooflights are quite often high up in the roof and not easy to access for cleaning.

BIOCLEAN glass is easier and faster to clean, and needs doing so less often. Our rooflights stay clean longer, providing more light with less effort.

All Stella bespoke skylights offer a selection of high quality glazing

A wide range of rooflight glazing options for every application

We offer a wide range of glazing options for our bespoke rooflights and skylights. Typically our focus is on thermal performance and self-cleaning.

If however you have a requirement for improved sound efficiency, fire, safety or shading then we will have a range of options available for you.

​There are a number of factors that you should consider when designing your rooflights and probably the most important is to specify the right glass for the application in which it is being used.

This means that the type and thickness of the rooflight glazing also needs careful consideration. For example, the larger the glass area then the thicker the units will be.

Thermally efficient rooflight

Toughened or laminated glass?

The positioning of the rooflight will also determine what type of glass should be used in the unit make up. For example, our double and triple glazed rooflight units would normally be produced using toughened safety glass, however, if your roof windows are being fitted at a height of 5m or more above floor level, then the inner pane should be laminated glass.

Likewise, if you are using large areas of glass at lower levels you should consider what is going to be underneath and undertake a risk assessment to decide whether having a laminated inner pane is a better option.

Choosing your rooflight glass unit specification is as important as the frame itself and needs careful consideration.

Not all glass options are suitable for all applications and we would always advise that you discuss your project with us. Read our helpful article on the practicalities involved in specifying large rooflights.

Specifying Large Rooflights
Stella rooflight CMS Testing
Rooflight glazing CMS Mark

CMS Mark

The CMS mark on our glass units provides additional assurance of compliance with the highest standards in product testing and certification. This mark signifies that our products have been independently assessed and meet all required criteria for safety, performance, and durability.

By adhering to these stringent standards, we ensure that our rooflights not only look beautiful but also provide unmatched reliability and thermal performance for years to come. Whether you are working on a restoration project or a contemporary design, you can trust Stella Rooflight to deliver excellence at every level.

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Watch how glazing units for Stella Rooflights are manufactured

Each Stella Rooflight is bespoke made, with customers able to choose their preferred type of glazing, including self-clean, solar control, double or triple glazed.

 

FAQs
What is rooflight glazing?
Rooflight glazing refers to the glass unit used within a rooflight, designed to provide natural daylight while delivering thermal performance, safety and weather resistance. Stella Rooflight uses high-specification glazing to ensure both energy efficiency and long-term durability.
What is a U-value in rooflight glazing?
A U-value measures how much heat is lost through a rooflight, expressed in W/m²K. The lower the U-value, the better the thermal performance and insulation of the glazing system
What U-values can rooflights achieve?
High-quality rooflights can achieve whole unit U-values typically between around 1.1 and 1.6 W/m²K, depending on the design and glazing specification.
Is double glazing or triple glazing better for rooflights?
Double glazing is often preferred for conservation rooflights because it allows for a slimmer, more traditional profile. Triple glazing can improve thermal performance but is significantly thicker, which can compromise the flush-fitting design required in heritage applications.
What is solar control glass?
Solar control glass is designed to reduce heat gain from sunlight while still allowing natural light to pass through. This helps prevent overheating in spaces with large areas of roof glazing.
What is self-cleaning glass?
Self-cleaning glass has a special coating that uses sunlight and rainwater to break down and wash away dirt. This reduces maintenance and helps keep rooflights clear over time.
Are rooflight glazing units laminated for safety?
Yes, high-quality rooflight glazing typically includes a laminated inner pane, which improves safety by holding the glass together if it breaks and reducing the risk of injury.
Does roof pitch affect glazing performance?
Yes, the performance of a rooflight can vary depending on the pitch of the roof. U-values are typically measured at either horizontal or vertical positions, and real-world performance can differ depending on installation angle.
Why is spacer bar thickness important in glazing?
Spacer bar thickness affects both thermal performance and overall unit thickness. For example, triple glazed units are significantly thicker than double glazed units, which can impact the visual profile of a conservation rooflight.
What should architects consider when specifying rooflight glazing?
Architects should consider thermal performance (U-value), glass thickness, solar control, safety glazing, and how the glazing affects the overall appearance of the rooflight. It is also important to ensure compliance with building regulations and project-specific requirements.

View our brochure

If you would like to receive a printed version of our brochure feel free to email us at info@stellarooflight.co.uk. A digital version is also available to download.

Download brochure

Need some inspiration?

Head over to our inspiration page to see a selection of images and case studies with projects that have installed Stella rooflights.

Get inspired
Roof window hallway

Speak to us

We would love to hear about your unique project! Contact us with your rooflight enquiry and our knowledgeable team will be pleased to help.

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