FREE UK DELIVERY (Excl. Scotland, West Wales, Devon and Cornwall)

Bi-Parting Sliding Rooflight Share
10 year warranty

Starting from £8,995.00 (Excl. VAT)

Customise & buy

Please provide external kerb dimensions.
Other colours, sizes and quantities available on request.

Stock items are usually delivered within 1-2 days
(*subject to availability)

FREE DELIVERY (Excl. Scotland, West Wales, Devon and Cornwall)

£1,398.00 + VAT
Secured by design Secure by Design - Building regulations Part Q compliant solution available, please call: 0116 2610 710
All of our products come with the following features

Duplus Bi-Parting Sliding Rooflights


Designed to provide a large opening to any roof or use this extended roof opening any way you decide!

  • Perhaps you are looking to open up more of your internal living space to the outside?
  • Maybe you want to provide precise control for ventilation?
  • Are you looking for a roof opening large enough to enable access onto the roof above?

In any of these instances the Duplus bi-parting sliding rooflights are the ideal product. Our sliding rooflight is suitable for flat roof applications up to a maximum of 5 degrees slope.

Building Regulations

This thermally efficient bi-parting 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. Therefore, without the need of any roof tracks or further roof penetrating supports.

Advanced Features

Our bi-parting sliding rooflights incorporate a rack and pinion drive with a 24v concealed electric motors. An open/close switch is provided that is linked back to a control panel, to allow precise control of the sliding rooflight motors.

Optional extras include:

  • Rain sensor
  • Temperature sensor
  • Remote control
  • 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, helping protect the sliding skylight internal framework and reduce the risk of slipping during access and egress.

The rooflight design incorporates a manual override facility. The override facility enables the rooflight to be closed in the event of power failure. This facility includes a key, which can be used to disengage the rooflights motor. The rooflight can then be manually opened or closed.



Additional options

Duplus bi-parting sliding rooflights are double glazed in clear HEATSOAKED toughened safety glass as standard.

Options are available:

  • Blue tinted glass
  • Bronze tinted glass
  • Grey tinted glass
  • Obscure finish for privacy
  • High-performance solar control (minimise solar gain (g) and maximise light transmittance (Lt))

Our rooflights achieve outstanding thermal performance. True U-value and Ud-value available upon request.

Material Specifications, Installation & U-Value

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.

Delivered FULLY ASSEMBLED. No need for time consuming assembly on site. Significantly higher security compared to kit systems.


“Very friendly and helpful customer service throughout the purchasing process. Very nice and good quality rooflights!”
Why Duplus?
Over 60 years of experience
Order information

For further information and our full terms and conditions, pleasesee our Customer Services page.

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Delivery or collection

All of our rooflights can be delivered around the UK, or you can collect from our factory in Leicester.

Stock items delivered within 48 hours (subject to availability).

Custom sizes normally 20-25 working days (subject to workload at the time of ordering).