Trusted Suppliers & Fitters of

Korniche Roof Lanterns

Glass roof lanterns are often the final piece of the jigsaw on flat roof extensions, that’s why at OnTime we knew it was important to have the greatest option to finish your extension. 


Roof Lanterns at ontime windows

More Glass, Less Roof.

“I had a handle break and couldn't shut the window, the team from ontime came out the same day with a temporary fix and the following day fixed it properly, very impressed for the second time. Thanks guys.”

Alison Lynd

Sleek and Stylish

Slim sections – at only 57mm wide, the spas and ridge sections of the Korniche lantern are amongst the slimmest on the market.  

Coupled with the sculpted bosses they provide a look usually associated with hand crafted timber constructed lanterns.  

Design optimisation ensures that Korniche has the largest glass spans and fewest rafters currently available from any other system on the market 

Strong and Secure

The Korniche Roof Lantern has been optimised to create the strongest and stiffest roof lantern possible with minimal structure to obscure your view and let light flood into your home. Unparalleled in strength, the Korniche can survive whatever nature throws at it. 

Korniche has an innovative glass lock system and tamper proof fasteners keep everything tightly in place and once finishing capping’s are fitted, there are no visible fasteners anywhere to be seen ensuring your Korniche roof is secure.  

Thermally Efficient

In the creation of the lantern, Korniche have successfully eliminated cold bridging by isolating the external profiles from the internal ones. This combined withigh performance glazing provides excellent thermal efficiency.  


Take a look at the video below for more detail on the class leading Korniche Roof Lantern. Get in touch to configure yours today and one of our experienced team could have your new roof lantern installed in weeks!

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Korniche Roof Lanterns. The perfect Finish.