Product Information

Triple glazed with UV protected polycarbonate, the circular X-Four rooflight complies with the maximum allowable Ud value of 2.2.


  • GRP kerbed circular rooflight system.
  • Vented airspaces.
  • Air leakage meets Part L critetia.

Thermal Efficency Table

The range primarily reflects the level of thermal efficiency (Ud value) and hence its suitability for particular applications. It is recommended that the appropriate X-Range be selected first using its Ud value as a guide, followed by the required size, shape and glazing.

Read More

How to specify Xtralite rooflights

If you would like to specify exactly which configuration you require, click on the following to go to the specification guide:

To find a full range of PDF and CAD drawings for the Xtralite range, click on the following to go to the downloads section: