Please provide the external/outside finished kerb dimensions, including all roofing finishes. These are the dimensions we require, and that you will need to input on our website. If you are unsure or have any further questions, please do not hesitate to contact Duplus for further clarity.

Our fixed ‘flat’ rooflights are powder coated Anthracite Grey (RAL 7016 dark grey matt) as standard. Our walk on and circular rooflights are powder coated black (RAL 9005 matt) as standard. Our lantern, pyramid, hinged opening and sliding rooflights are powder coated Anthracite Grey (RAL 7016 dark grey matt) Externally and RAL 9910 Matt White Internally as standard. Our frameless modular rooflights are RAL 7016 dark grey matt as standard. Our framed modular rooflights are RAL 7016 dark grey matt Internally & Externally as standard. We can offer a wide range of RAL colours. If you require an alternative colour, please do not hesitate to contact Duplus for assistance.

In most circumstances, we do manufacture custom/bespoke sized rooflights (within our minimum and maximum parameters). For a price and further information, please contact Duplus via our website or sales office.

Yes, you can collect directly from our premises in Leicester. Please advise a member of the team prior to ordering. We always advise our rooflights to be transported singularly and flat / horizontally during transport. Rooflights should never be stacked to avoid risk of damage.

We do not offer an installation service. All our rooflights are delivered with a comprehensive set of instructions and if required our technical sales team are always available to answer any questions regarding any aspect of the installation process. Our rooflights arrive on site pre-assembled and are structurally bonded in our factory in strictly controlled conditions which cannot be replicated on site due to dust, moisture etc. We have purposely designed our rooflight products with our customers in mind and therefore they are very easy to install. They do not require a specialist to install and our warranty is not affected if installed by another party.

Yes. Our rooflights have been tested for weathertightness to BS EN 14351-1:2006 +A1:2010 clauses 4.2, 4.5 and 4.14. These test reports can be found in our technical section of our website.

All our rooflights with the exception of our modular & ridge rooflights, are delivered to site fully assembled. Our modular & ridge rooflights are delivered in pre-glazed sections. We provide a supply only service, where we will deliver your rooflight order to site. Please ensure you have sufficient labour resources/equipment on site to offload your rooflight order from our delivery vehicle, as we do not offload. Weights are provided on every quotation and order acknowledgment.

No, our rooflights do not require any flashing kits. We will supply all the fixings you require for installation. Please note, you will need to create an upstand/kerb on your roof and then weather/flash with your roofing finish. Then our rooflight will sit and seal against your weathered finished upstand. Please refer to Duplus technical drawings and installation manuals for further information.

The rooflight is fully assembled (structural bonded together) you simply locate on to the top of kerb assembly, unclip the external cover strip, secure the rooflight to kerb and finally replace the external cover strips. Please refer to the installation manuals in the technical section for full details. The installation process, for a reasonably competent DIY person should take less than an hour from arriving on site.

Duplus strive to provide the best and most competitive prices in the first instance. If there is repeated business (minimum 5 orders over a one-year period), we can then review further down the line. However for large quantity enquiries, we are more than happy to review prices. For further assistance, please feel free to contact Duplus.

Our standard glass specification is double glazing. This consists of two panes of toughened Low E safety glass. The cavity is filled with argon gas and a warm edge spacer bar.