Sliding Rooflights by Duplus - Call us on 0116 2582834

Sliding Rooflight

Starting from £2200

Duplus sliding rooflights are designed to provide a large opening to any roof. How you use this opening is for you to decide, but it could be that you are looking for the opportunity to open up more of your internal living space to the outside, it could be that you want to provide precise control for ventilation, it could be that you need an opening large enough to enable access onto a roof. In any of these instances the Duplus sliding rooflight is the ideal product.


Our high quality thermally efficient rooflight meets the requirements of the Building Regulations. The in-built telescopic sliding mechanism allows the rooflight to support its own weight when fully opened without the need of any roof tracks or further roof penetrating supports. The maximum size currently available is 2000mm wide x 2000mm in length. In the interest of safety we would always advocate opening the rooflight in a horizontal direction and not vertically. The sliding rooflight can be fitted to a sloping roof. The sliding rooflight must slide across the roof slope and not up or down the roof slope. If you require any clarification on this please contact our rooflight sales technical team on 0116 2610710.


Our rooflight incorporates rack and pinion drive with a 24v concealed electric motor. The motor is controlled by a touch sensitive switch that allows precise control of the sliding rooflight. The switch incorporates an in-built transformer (see technical section), simplifying the electrical wiring connections and fits neatly into a standard double gang back box. Optional extras include a rain sensor, temperature sensor, remote control and safety access control (PIR). If you are considering ordering a product where roof access will be required, then please request the additional access pack which incorporates chequer plate tread boards which help protect the rooflights internal framework and reduce the risk of slipping during access and egress.


Should there be a power failure to the rooflight whilst it is in the open position, a manual override facility, including a key, can be used to disengage the rooflights motor. The rooflight can then be manually opened or closed.


Duplus rooflights are double glazed in clear toughened safety glass as standard, with options of blue, bronze or grey tinting or if preferred, an obscure finish for privacy or high performance solar control to minimise solar gain (g) and maximise light transmittance (Lt). Our rooflights achieve outstanding thermal performance. True U-value and Ud-value available upon request.


The extruded thermally broken aluminium perimeter frame is powder coated RAL 7015 dark grey matt externally and RAL 9910 white matt internally as standard. Other RAL colour options are available upon request.


Our sliding rooflight is easy to install, an internal perimeter gasket allows the rooflight to be placed directly on top of the builders kerb without the need for site applied silicone. It is then screwed to the builders kerb externally and a matching cover clip is then applied to conceal the fixings. A qualified electrician will be required to make the final connections to the motor and the transformer switch. Wiring diagrams are provided with all opening rooflights. As standard all double glazed units incorporate clear low ‘E’ glass achieving a centre pane U-value of 1.1 W/m²K.


The rooflight comes fully assembled and is factory cycle tested to ensure the products long term reliability. In the unlikely event of a motor failure, replacement motor housings are available from Duplus which have been designed to be simple to exchange.

  • Quality ProductFully factory assembled to ISO:9001 and Dow Corning® Quality Bond™ accredited
  • Building RegulationsRooflights meet or surpass the U-value requirements of Part L Building Regulations
  • GlassToughened safety glass as defined for use in BS5516. Double glazed units incorporate a secondary unit seal to prevent delamination due to UV light
  • Thermal PerformanceHigh resistance to condensation under normal conditions
  • Bespoke Sizes & FinishesWide range of sizes, RAL colours and glass specifications available
  • VersatilitySuitable for access and egress, manual or electric operation available
  • Fully AssembledRooflights are delivered fully assembled. No on site construction or additional kits necessary
  • BRE TestedWeathertightness tested to BS EN 14351-1:2006 +A1:2010 clauses 4.2, 4.5 and 4.14
  • Secure by DesignBuilding Regulations Part Q compliant solution available

Choose & buy your rooflight online

Please follow the steps below, and refer to our Technical PDF along the way.

Need help? Call us on 0116 2610 710

Other colours, larger sizes and large quantity orders available on request.
Overall kerb (external) dimensions (mm)
Overall kerb (external) dimensions (mm)
£1,398.00 + VAT

Deliveries, Returns, Cancellations, Refunds, Terms and Conditions
Stock items delivered within 48 hours (subject to availability), custom sizes normally 20-25 working days (subject to workload at the time of ordering). Sliding and Circular rooflights 35 working days. Please note, due to current high demand for our products, please call for current lead times prior to ordering. Thank you.
For further information and our full terms and conditions, please see our Customer Services page.