internal view of white roof lanterns in restaurant

Stratus Lantern Roofs

Stratus lantern roofs are a stylish and high performing modern roof lantern system. They are manufactured using a thermally broken profile to maximise energy efficiency performance and combine a sleek contemporary aesthetic with the capacity to admit an abundance of natural light. For new build extensions or lantern roof replacements, they are the perfect option.

  • Minimalist aesthetic
  • Thermal break technology
  • 2-way, 3-way, or contemporary design
  • New-build or roof replacement
  • Structurally strong aluminium
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Product features

Design features

Stratus roof lanterns are available in three different models, a two-way, three-way, and contemporary design. The difference between the designs refers to the number of glazing bars present in the window system. The system has a fixed 20-degree pitch with purpose designed top caps and internal covers to create a sleek and discreet roof finish. Available with a dual colour finish with white interior, Stratus roofs are a premium lantern roof system for professional trade installers.

Product options

  • Maximum size 1500mm x 6000mm (2-way)
  • Maximum size 3000mm x 6000mm (3-way)
  • Maximum size 1500mm x 3000mm (contemporary)
  • 20-degree fixed fall lantern pitch
  • 24mm glazing
  • Suggested perimeter support 100mm x 150mm
  • High thermal performance levels
  • U-values as low as 1.0 W/m²K (depending on glass projection)
  • Integrated thermal break technology


2 way design

3 way design

4 way design

Contemporary design

Size Limits

Maximum dimensions 1500mm by 6000mm

Maximum dimensions 3000mm by 6000mm

Maximum dimensions 2000mm by 2000mm

Maximum dimensions 1500mm by 3000mm



Maximise natural light with a Stratus lantern roof

For installers who want to offer their customers a lantern roof system that will effectively enhance natural light intake, the Stratus lantern roof is an excellent option. Featuring integrated thermal break technology and 24mm glazing, the Stratus lantern roof provides outstanding levels of insulation and energy efficiency to ensure a warm and high performing interior living space. Popular for installations in home extensions, orangeries, and loft conversions, the Stratus lantern roof is an excellent addition to any installer’s product portfolio.

internal view of white roof lanterns

Frequently Asked Questions

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What are your lead times?

Lead times can vary per product. For stock PVCu colours we work to a 10-15 working day schedule. For more up to date lead times on any specific product e-mail us at where we will be happy to help.

Are your products compliant with new building regulations?

Our Eurocell PVCu range of products are fully compatible with all new build regulations. Quantum Windows has a number of secured by design certifications to provide you with peace of mind and our quality systems in place are all aimed at producing a quality product first time, every time.

Currently, our range of Aluminium double glazed Aluk 58BW HI Windows, Aluk 58BD HI Residential doors, EdgeGLIDE+ Sliding door and Unifold HI all have a U-value of 1.4 or below and are compliant with new building regulations. Our range of compliant products is always growing, so please give us a call for the most up to date information.

Please note that you will need to specify on your enquiry if you need your product to meet the new building regulations.

Where do you deliver to?

We deliver weekly to the West Midlands, Derbyshire, Leicestershire, Warwickshire, Oxfordshire, Berkshire, Surrey, West Sussex, East Sussex, Kent, Greater London, Hertfordshire, Essex, Suffolk, Cambridgeshire, Bedfordshire, Buckinghamshire. Norfolk and of course Northamptonshire.

aspects white open bi fold doors

I have been buying windows and doors from Quantum Windows for over 25 years. I have always found the pricing very competitive and the quality has been very high. On the rare occasion a problem has arisen it has been dealt with swiftly and efficiently. The office staff are always polite, friendly and professional and we have built a strong relationship over the last 25 years. The drivers are excellent. I know them very well and they have adapted to my ways of working and are always willing to help and accommodated me.

Craig Gutteridge

“We have dealt with Quantum Windows for 13 plus years, we find the staff to be courteous and polite and any queries we may have are dealt with promptly and efficiently, nothing is too much trouble”

Jackie - Accounts Dept

W R Enterprise Glass & Glazing Ltd.

We have been buying from Quantum Windows for almost 30 years now, they offer a wide product range and the Team have excellent product knowledge which is invaluable in an ever-changing market.

All team members are friendly, helpful and efficient, orders are processed with care and quotations provided promptly. I would have no hesitation in recommending Quantum Windows.

Vicki Webb

Clearview 2000 LTD

‘We have used Quantum Windows for many years now, we have always found them to be very easy to work with, the staff are all very helpful and friendly, they are always available to offer any help should we need it, excellent product!’


Chapel Windows

Glevum and Quantum have enjoyed an excellent working relationship for a number of years, working together to provide a high quality, value for money product offering and service for the end user.

As well as delivering a high quality product, the knowledge and experience of the staff at Quantum is invaluable to a customer in a market where Building Regulations are constantly changing.

Mike Donaldson

Glevum Design & Build

As installers of both PVCu and Aluminium to the New Build market, the importance of on time delivery is totally time critical.
Over the last 20 years Quantum windows have worked closely with PGB to partner with us and deliver our offer to site.
Highly professional, and a pleasure to have worked with them so closely over the years.

Phil Martin CEO

Portico CB Ltd

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