S1 Aluminium Roof Lantern
Bring more daylight into your extension with a slim, secure and thermally efficient aluminium roof lantern.
The S1 aluminium roof lantern is designed for modern kitchens, flat-roof extensions and open-plan living spaces.
With clean sightlines, large glazed areas and advanced security and thermal performance, it delivers the style homeowners want with the performance they need.
Why choose the S1 aluminium roof lantern?
- UK’s most secure aluminium roof lantern
- Centre-pane U-value from 1.0 W/m²K
- Slim sightlines for maximum daylight
- Sizes up to 3.2m x 6m without tie bars
- 13 layout options
- High performance 28mm double glazing
- 10-year manufacturer’s warranty
The beautiful S1 Aluminium Roof Lantern is on display in our interactive showroom.
Designed to maximise light and space
The S1 aluminium roof lantern is engineered with slim aluminium profiles and fewer bars, allowing larger panes of glass and uninterrupted views of the sky.
This means:
- More natural daylight in your extension
- A brighter, more open feel
- A cleaner, more modern aesthetic
Perfect for kitchens, dining spaces and flat-roof extensions where light is essential.
Why choose Marlin Windows?
Family-run manufacturer with over 20 years’ experience
Made-to-measure products
Fast quote turnaround (typically within 24 hours)
Lead times from 2–3 weeks (stock colours)
Visit our Keighley showroom to see products in person
We combine quality manufacturing with personal service to help you get the right solution for your home
Reliable national delivery
A complete service, from survey to installation across the North of England
Real Sheerline S1 Rooflight Project
Set in the North Yorkshire village of Eastby, this property underwent an extensive redevelopment designed to transform and significantly expand the existing home. The project included substantial rear and side extensions, creating a larger, brighter and more contemporary living environment while retaining an appearance sympathetic to the character of the property and its surroundings.
For the rear extension, a Sheerline S1 roof lantern was installed to introduce natural light from above and create a striking focal point within the new living space. The lantern was also specified with a remote-controlled Sheervent opener, allowing ventilation to be easily controlled without the need to manually access the roof glazing.
A more secure roof lantern
Your roof lantern should do more than look good — it should protect your home.
The S1 includes a range of advanced security features:
- Anti-tamper glazing system
- Patent-pending glass lock design
- Security tape for added protection
- Anti-tamper screws
- High-security ridge end
- Optional security clamping plates
These features work together to help prevent glass removal and forced entry.
“Great quality products along with great customer service. Easy to recommend.”
Excellent thermal performance
The S1 is designed to keep your home comfortable in all seasons.
- Centre-pane U-value from 1.0 W/m²K
- Thermlock® multi-chamber technology
- 28mm high-performance double glazing
- Perimeter seals to reduce draughts and water ingress
This helps:
- Retain heat in winter
- Reduce overheating in summer
- Improve overall energy efficiency
Glass Types
All external pane glass types are Low-E, with high performance 28mm double glazing. Toughened and laminated safety glass ensures optimum security and durability.
Available in clear, solar clear, solar blue, solar grey, self-cleaning or satin privacy glass, plus laminate options for UV protection. The S1 roof lantern promises seamless, leak-free, and fully weatherproof performance.
Configurations & Colour
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The S1 is available in 13 different configurations, giving you flexibility for any extension design.
- Square and rectangular options
- 2-way, 3-way and larger configurations
- Sizes up to 3.2m x 6m without tie bars
No bulky supports means cleaner sightlines and a more premium finish.
Square Style 1
2-way Style 2
2-way Style 3
2-way Style 4
2-way Style 5
Square Style 6
2-way Style 7
2-way Style 8
2-way Style 9
2-way Style 10
3-way Style 11
3-way Style 12
3-way Style 13
Ventilation option
Upgrade your roof lantern with SheerVent® for discreet, integrated ventilation.
- Improves airflow
- Helps reduce condensation
- Maintains clean external appearance
Ideal for kitchens and busy living spaces.
Document Downloads
S1 Aluminium Roof Lantern Consumer Brochure
The UK’s most secure, sustainable and stylish roof lantern
Installation Video
Step-by-step guide to installing the award winning S1 lantern
About Marlin Windows
We’re a family-run company that’s been manufacturing aluminium windows and doors for over 20 years from our factory in Keighley.
We have a background in aerospace engineering and bring the same level of meticulous design and manufacturing to your windows, with some of our designs being featured on Grand Designs.
We pride ourselves on exceptional customer service, and we’ve developed a unique quality control system to guarantee excellent fitting and beautifully designed rooflights and lanterns for your home.
Latest projects
SLIDING DOORS
Cross Hills – Spectacular Eco Friendly Design
CONTEMPORARY WINDOWS
Early 70's Property Renovation, Windermere – Contemporary Glazing
Ready to transform your extension with more natural light?
Get a made-to-measure quote for your S1 aluminium roof lantern today. Our team will guide you through sizes, styles and glazing options to find the perfect fit for your home.
Request your free quote
Visit our showroom
01535 603909 to speak with our team.
Frequently Asked Questions
If you require any support, please don’t hesitate to review our FAQs below or drop us a message on our contact form here
How secure is the S1 Roof Lantern aluminium roof lantern?
The S1 includes multiple anti-tamper features designed to prevent glass removal and improve security.
What type of glazing is available?
All external pane glass types are Low-E, with high performance 28mm double glazing. Toughened and laminated safety glass ensures optimum security and durability.
Available in clear, solar clear, solar blue, solar grey, self-cleaning or satin privacy glass, plus laminate options for UV protection.
What information must be provided in order to get an accurate quotation?
We will ask you to provide the following information:
- Approximate dimensions (width x height)
- Basic design/layout
- Colour
- Project location
How long will my quotation take?
We aim to return all quotations within 24 hours however large projects may take longer.
What is the lead time for the S1 Roof Lantern?
Typically 2–3 weeks for standard colours.
Come and explore…
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