Best Price Guarantee
Best Price Guarantee We will never be beaten on price
Nationwide UK Delivery
Nationwide UK Delivery Fast Delivery Nationwide UK
Designed & Manufactured
Designed & Manufactured in the UK
See all Products

Triple-Glazed Flat Rooflight: Self-Cleaning Glass

Price range: £163.00 through £619.00 ex. VAT £195.60 inc. VAT

Clear

This item is made to order
All prices are subject to 20% VAT

Made to order
Custom SizeBi-Fold & Sliding Doors
Triple Glazed
Triple Glazed
Self Clean Glass
Self Clean Glass
Thermally-Efficient Glass
Thermally-Efficient Glass
Standard Sizes
Standard Sizes
20 year warranty
20 year warranty
Reduced Risk of Condensation
Reduced Risk of Condensation
UV Protection
UV Protection

Transform your space with our triple-glazed, self-cleaning rooflights.

Our UV-protected, thermally efficient rooflights deliver maximum performance with added noise reduction for a peaceful home.

Triple-glazed and self-cleaning, they provide clear sky views and refresh your space, making every moment at home special.

Plus, with extra features included at no extra cost or lead time, we can save you time and money compared to competitors.

Get yours from Toughened Glass Systems today – rooflight experts.

If you’re shopping around, view our most popular categories:

And most popular products:

 

What are triple-glazed rooflights?

A rooflight is simply a window that is built into the roof. It could be a small, single pane of glass, or it could be a large and expansive feature that accounts for most of the roof.

Triple-glazing is effectively three panes of glass that are separated by argon gas. This significantly improves insulation, reduces heat loss, and keeps your home warmer in winter and cooler in summer.

Triple-glazing is the latest advancement in window insulation, offering superior performance compared to double-glazing.

View our guide on triple-glazing vs double-glazing to learn more.

What is self-cleaning glass?

Self-cleaning glass is a type of glass that requires minimal maintenance thanks to its advanced coating technology. 

This special coating, which is often transparent and undetectable to the eye, allows the glass to actively break down dirt and other contaminants on its surface, reducing the need for regular cleaning. 

Self-cleaning glass combines convenience with innovation, and is great for hard-to-reach areas like skylights or high windows.

Learn more about self-cleaning glass in our helpful guide.

What are the benefits of this triple-glazed self-cleaning rooflight?

 

  • Save time: The self-cleaning coating breaks down dirt, which rain washes away, reducing cleaning and keeping your rooflight clear with minimal effort.
  • Exceptional insulation: Triple glazing reduces heat loss and gain, keeping your home comfortable and energy-efficient while cutting draughts and cold spots.
  • Lower energy bills: With improved insulation, your home retains heat for longer, reducing the need to rely on central heating. This results in lower energy consumption and smaller heating bills.
  • Stunning frameless design: Sleek frameless skylights maximise natural light and complement modern interiors, unlike bulky framed alternatives.
  • Noise reduction: Triple-glazing helps reduce external noise, creating a quieter, more peaceful indoor environment.
  • UV protection: The glass blocks harmful UV rays, protecting your furniture and flooring from fading.
  • Increased property value: High-quality, energy-efficient rooflights can boost your home’s resale value.
  • Enhanced security: Toughened triple-glazed glass provides added strength and security compared to standard options.

Choose your bespoke design today, or contact us to find out more.

Why choose Toughened Glass Systems?

We’re rooflight experts with years of experience providing quality rooflights and skylights to individuals and businesses.

As a leading name in the industry, we’re able to offer the best products at unbeatable prices.

All our products are designed and manufactured in the UK, and we offer fast UK delivery on all orders.

We’re proud of the quality of our products and services, and understand that when investing in a rooflight, it has to be right. Our features are high-performing and dependable, and our reviews and testimonials are full of satisfied customers.

If you have any questions, feel free to get in touch – a member of our team will be happy to help.

Product FAQs

How is this triple-glazed rooflight different from standard rooflights?

Triple-glazed rooflights are designed for maximum performance. With three panes of glass, argon gas insulation, UV protection, and a self-cleaning coating included as standard, they deliver superior thermal efficiency, noise reduction, and long-term value compared to standard spec flat rooflights.

Is triple glazing worth the extra cost?

Yes. While triple-glazed rooflights cost more upfront, they offer better insulation, reduced heat loss, lower energy bills, and improved comfort year-round. Over time, these benefits help offset the initial investment.

What’s the difference between triple and double-glazed rooflights?

Triple glazing adds an extra pane of glass and insulating layer, resulting in lower U-values, better temperature control, and improved noise reduction. Double glazing performs well, but triple glazing offers the highest level of efficiency and comfort available.

Performance FAQs

How thermally efficient are triple-glazed rooflights?

Triple-glazed rooflights are highly thermally efficient, helping to keep heat inside during winter and reduce overheating in summer. This creates a more comfortable living environment and supports lower energy consumption.

What is the U-value of this feature?

The centre U-value is 0.9 W/m²K. To compare, double-glazed rooflights have a U-value of 1.1.

Will this feature reduce my energy bills?

Yes – improved insulation means your home retains heat for longer, reducing reliance on central heating and helping to lower ongoing energy costs.

Noise & comfort FAQs

Do triple-glazed rooflights reduce external noise?

Yes. The additional glass pane and argon-filled cavities help reduce noise from traffic, rain, and surrounding activity, making this rooflight ideal for urban homes or busy locations.

Are triple-glazed rooflights completely soundproof?

No rooflight is fully soundproof, but triple glazing offers a noticeable reduction in noise compared to standard or double-glazed rooflights.

Self-cleaning glass FAQs

Does self-cleaning glass save on maintenance costs?

Yes. As self-cleaning glass reduces the need for manual cleaning, it saves time and money you’d spend on standard maintenance.

Planning & installation FAQs

Do I need planning permission for a triple-glazed rooflight?

In most cases you won’t need planning permission. However, we recommend checking with your local authority. All our rooflights are designed to comply with planning requirements.

Can I upgrade an existing rooflight to triple glazing?

Yes – if you’re replacing an existing rooflight with the same opening size, installation is often simpler and more cost-effective than a brand-new install.

Cost & value FAQs

How much does a triple-glazed rooflight cost in the UK?

The price of a triple-glazed really depends on the size and features you go for. Ours range from £163.00 – £619.00 (excl. VAT)*.

*Prices correct as of March 2026

Are they a good long-term investment?

They’re a great investment. They look great, increase natural light, reduce noise, and improve energy efficiency.

Maintenance & longevity FAQs

How long will a triple-glazed rooflight last?

When professionally installed and properly maintained, triple-glazed rooflights typically last between 15 and 25 years.

Do they require much maintenance?

Thanks to the self-cleaning coating, maintenance is minimal. Just check the seals and frames periodically.

Are they safe and secure?

Yes. Toughened triple-glazed glass provides enhanced strength, durability, and security compared to standard glazing options.

Measuring & Installation Guide

Flat Skylights Rooflight Installation

Hassle-Free And Simple Fitting

The supplied skylight is easy for a builder to install. 

Our skylights are able to be installed conveniently on insulated upstands when coupled with builder-provided building materials. 

All information and diagrams relating to installation that you can see here is only for the purposes of general guidance since every project varies in construction and design depending on the drawings of the architect. Also, upstand design and dimensions can vary depending on the insulation specifications and architect’s drawings. 

How Is The Opening Measured?

Before purchasing the skylight, you first need to measure the opening in which the skylight is going to be fitted. It’s vital to leave 5 mm tolerances around the entire structural opening so that the bottom pane of the skylight can effortlessly fit into the space. The opening is the hole in the roof.

As an example, if you’ve bought skylights measuring 1000 mm x 1000 mm, this represents the dimensions of the glass’s top pane that will rest on the upstand’s top. The lower glass pane is 100 mm smaller around its sides, resulting in measurements of 800 mm x 800 mm. The structural opening, therefore, must be 810 mm x 810 mm, with the upstand width of a maximum of 70 mm and a minimum height of 150 mm.

A 100 mm black border and a step of 100 mm is all around the top glass pane.

Roof Preparation

The skylight will be secured to the timber upstand that is prepared by the builder or roofer during the process of constructing your flat roof.

It’s essential for your timber upstand to have a minimum protrusion of 150 mm above your roof. The pitch must be a minimum of 6°, as this is enough to enable the free flow of water downward so that water will not pool on the glass surface. The maximum pitch for the installation must be no more than 45°. For the easy clean solution to work optimally the pitch should be 10 degrees. The rooflight can be installed at lower pitches but this would mean the self-clean coating wouldn’t work as effectively and you may get water pooling on the top. We recommend pouring water over the top glass before bonding it if you want to install at a lower pitch.

Skylight Installation

The final step that you need to complete when finishing your roof before installing the skylight involves the application of the roof covering onto the side of the upstand, thus making it weatherproof.

Before the product is sealed with silicone, you can apply water to it to test whether it can flow off effectively. Should pooling occur, you may need to raise the pitch. In order for optimal function of the easy-clean solution, the roof pitch must be at least 10 degrees with adequate wind flow to all directions. 

Dowsil 791 silicone must be applied in reasonable amounts to the top part of the upstand as per the datasheet provided by the silicone supplier. After this, the top skylight pane can be placed onto the upstand’s top. Pressure should be applied around this top pane to enable even spreading of the silicone so any gaps will be effectively sealed.

All of the four bottom pane sides must then be supported once it has been put into position with the timber batten  with top aluminium strip section at the top bonded and fitted before the plasterboard. A suitable structural silicone must be applied between the surfaces of the aluminium trim and the glass bottom pane as per the datasheet provided by the supplier, and it must be secured firmly in place. Excess silicone should be wiped away with finishing tools and the plasterboard may be installed at this time. 

Only a sealant that is compatible with setting bocks, the aluminium angle trim, the glass, and the upstand’s top must be used. Dowsil 791 weather-proofing silicone or Dowsil 895 structural sealants are the best choices. Note that some sealants require the application of primer to surfaces first. 

Pitched Skylights Rooflight Installation

Please see fitting diagram below for installation on pitched roofs.

Technical Information

Our rooflight systems are ideal for various types of properties, ranging from single-storey flat roof extensions to fully developed residential complexes. These frameless rooflights are meticulously crafted with premium self-cleaning, triple-glazed, UV-protected glass, delivering exceptional thermal efficiency and noise reduction.

  • UV Protection
  • Triple Glazed
  • Easy Clean Glass
  • Premium Quality
  • 20 Years Warranty
  • Price Beat
  • Centre U Value: 0.9 W/m²K
  • Designed in UK
  • Suitable for Flat and pitched roofs
  • Exceptional Thermal Performance
  • Triple Glazed unit offers better sound insulation compared to double glazed
  • Easy Installation Guide
  • Top Pane Glass: 6mm BS EN 12150 Toughened Glass
  • Spacer Type: Black Warm Edge
  • Air Gap/Spacer: Warm Edge Spacer bar Argon Gas Filled Structurally Bonded
  • Middle Glass Pane: 6mm BS EN 12150 Toughened Glass
  • Air Gap/Spacer: Warm Edge Spacer bar Argon Gas Filled Structurally Bonded
  • Bottom Glass Pane: 6mm Low EBS EN 12150 Toughened Glass
  • Clear Glass

The installer or buyer should ensure that a risk assessment is carried out to confirm the product’s suitability for the project. Depending on the application, the rooflight may need to meet specific requirements, for example, it may need to be obscure, include a larger upstand, be suitable for foot traffic, or use laminated glass. For example, if the rooflights are positioned more than 5 metres above floor level, or located above swimming pools, laminated glass will be required.

Please note that the standard rooflight is supplied with toughened glass for both the internal and external panes. If laminated glass or any other specification is required, this can be provided upon request and quoted accordingly. Please note additional care needs to be taken during installation when laminated stepped rooflights are supplied, foam rope would be required to level off any discrepancies which will prevent any pressure and stop cracking on the bottom glass laminated pane.

Laminated glass consists of two panes bonded together with a plastic interlayer that holds the glass in place if broken. Toughened glass, by contrast, is a single pane that has been heat-treated and rapidly cooled to increase its strength; when broken, it shatters into small, blunt fragments. Toughened glass is a type of safety glass. While toughened glass offers greater strength and impact resistance, laminated glass provides enhanced safety and security by remaining intact after breakage.

Warranty

The Triple Glazed Self-Clean Rooflight comes with a standard 20-year manufacturer warranty.

Delivery & Lead Time

Lead time is 1-3 working days in most areas. Deliveries to Scotland and some remote areas can take up to around 5 working days. Please not we do not deliver outside of UK mainland. Extended lead time may apply to postcodes shown: EX, TA, PL, TR, TQ, SA, SY, LL, LA, CA, PR, BB, YO, HU, LN, DL, SR, NE, KY, KA, EH, AB, IV, PH, PA, NR, ML, KW, DD, FK, DG, TS.

Third-party transport services deliver to specific areas on designated days between 7:30 am and 6 pm, Monday through Friday. Returns for this product will incur a 20% restock fee once the items have left the depot. Delivery is available to all postcodes accepted at checkout, with fees calculated during the checkout process on our website.

Orders are processed Monday to Friday from 9 am to 6 pm, excluding bank holidays. Deliveries to Scotland and certain remote areas may take up to 5 working days.

Please ensure that there is adequate labour on-site to unload your product, as the driver is not insured to assist with offloading. The recommended lift per person is 25 kg, with some products weighing up to 200 kg, so it is essential that enough people are available to help.

If delivery fails due to the absence of personnel on-site or the driver being unable to make contact, the product will be returned to the depot or our warehouse, and a re-delivery charge may apply.

Testimonials