Sheerline S1 Roof lantern for Complete efficiency

Secure, Sustainable & Stylish

Selecting the right roof lantern for any property that lets the light in, is energy-efficient, secure and maintains a comfortable balance of heat in the room has traditionally been an issue with glass roofs. However, this innovative design from Sheerline has considered these at every turn during the design stages to develop a structural frame that is secure, thermally insulated and sealed. Ensuring no heat loss through the glass or frame.

The UK's most secure roof lantern - keeps the heat in and intruders out.

The Sheerline roof lantern offers a strong aluminium structure with deep internal bars that can span up to 3.2 x 6m without tie bars. These slim 50mm rafter, hip, and ridge sightlines maximise the light in the room. The S1 lantern also features ultra-low line aesthetics so rafter and hip top caps sit close to the glazing level on the exterior, creating a sleek modern look.

The S1 lantern combines aluminium’s clean lines with exceptional thermal performance and features our innovative Thermlock® multi-chamber technology to keep you and your property well insulated against the worst of the UK weather.

Design and innovation within the construction of the S1 Roof Lantern have eliminated weaknesses previously seen in other traditional glass lanterns. Features such as anti-tamper screws, enclosed anti-tamper glazing, security tape and our patent pending glass lock, alongside our unique high-security ridge end, ensure there isn’t an easy way to enter your property via your flat roof lantern.

You can read more about the technical specification in our Sheerline Lantern brochure. If you have any queries or questions you can contact us on 01234 342669 or email us at Need to book a call back? Complete our service call form to speak to an expert. If you know exactly what you want, fill out our S1 roof lantern order form to request a quote. 

S1 Roof Lantern Technical Features:

  • 28mm glazing 1.0 U-value W/(m²K)*
  • Secure with enclosed anti-tamper screws
  • Security tape
  • Glass lock
  • ThermLock system multi-chamber technology 
  • Co-extruded perimeter
  • Hardwearing powder coating (inside and out)
  • Laminate glass upgrade

*Centre pane U-value. Subject to glass specification.

Play the Sheerline S1 Aluminium Roof Lantern Video

View our Sheerline Brochure brochure,  packed full of more information for you to digest. 

Please complete our S1 Aluminium Survey Sheet for any order requests.




It is possible to request different internal and external colours for your frame.  We offer popular colours or a variety of other RAL colours. All are available in Matt, Satin or Gloss finishes.

  • Pure White
  • Anthracite Grey
  • Jet Black
  • Cream
  • Agate Grey
  • Squirrel Grey
  • Pastel Turquoise
  • Chocolate Brown
  • Hipca Gloss White

Product Features


With innovative anti-tamper screws, enclosed glazing, security tape, glass lock combined with unique ridges Sheerline have created one of the most secure aluminium roof lanterns on the market. For extra security a laminate glass upgrade is available.

Sheerline Aluminium roof system available from Bedford Bi-folds Ltd


The Sheerline Roof Lantern is fabricated from aluminium which not only makes it durable but also due to its efficient properties and ease of highly efficient recycling processes makes this one of the most sustainable materials available.

Sheerline Aluminium roof system available from Bedford Bi-folds Ltd


The option to choose an alternative colour internally and externally from traditional colours to bespoke colours make it possible for any homeowner to add their own personal touch.

Colours for Sheerline Aluminium roof system available from Bedford Bi-folds Ltd

Aluminium Roof Light Video by Sheerline

Sheerline aluminium roof lanterns are available in a choice of 10 styles from square ‘pyramid’ designs to grander options suitable for larger ‘orangery’ style installations. Maximum sizes range from 2.4 up to an impressive 6m long, all set at a 25˚ pitch and all weather rated for the whole of the UK*. If you would like to order or request a quote please complete our S1 Sheerline form and one of our team will respond to you asap. 

*Subject to glass specification.
*Rated for a snow load of 1.2 KN/m2. Covering the whole of the UK up to 200m altitudes.