Zenon Specifications

The GRP industrial rooflight industry has seen huge changes and advances in technology over the last 25 years. There are now many factors that affect a rooflight specification and its expected performance. First and foremost, it is important to remember the reason why rooflights are required – to bring natural daylight into the built environment.

Daylight is a free, natural resource that provides many recognised benefits such as reduced energy consumption from artificial lighting, which results in reduced operating costs, and lower operational embodied carbon emissions. The health, safety and well-being benefits for the buildings’ occupants have also been extensively documented
and reported.

However, there is now a myriad of layer combination choices available to the designer and specifier to achieve compliance with regulations and energy assessment methods. All of this before the type of cladding envelope has been considered.

Hambleside Danelaw are proud to have achieved several ‘firsts’ in its journey as a leading UK manufacturer of GRP roofing products and continue to be at the forefront of the sector with the Zenon range of GRP rooflights. Having recognised the difficulties facing the designer when making the right rooflight performance choice, Hambleside Danelaw now offer a system approach to simplify the options with a range of key performance considerations to suit the individual project.

There are two categories of rooflight systems, Optimum and Premier. They both comprise a set of pre-determined rooflight assemblies to complement built-up, site assembled roofing systems for the metal building envelope. This system approach extends to the Zenon composite panel and barrel vault rooflights.


An enhanced range of assemblies featuring high performance, low embodied carbon components delivering extended periods of non-fragility and service life combined with high performing insulant options.
A range of traditional rooflights most often specified to meet the more basic demands of regulatory compliance based on required performance parameters.



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