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The UK's Leading Supplier of Rooflights
Thermadome Polycarbonate Rooflights



Thermadome Roof Lights and Thermadome Skylights

Natural daylight has long been recognised as the most effective form of light. Building Regulation Approved Document L requires designers to provide adequate daylight. '...Where rooflight areas are reduced below 20%, the building designer must take special care to demonstrate daylight levels remain adequate...'. Flat roof rooflights are the most efficient means of providing natural daylight, giving three times more daylight than an equally sized vertical window. The light from a rooflight is also more evenly distributed throughout the room, less likely to result in glare and does not compromise privacy

For more information on any of the Thermadome rooflights, a PDF version of the brochure is available for download. Click here to view


Thermadomes are high specification polycarbonate rooflights designed specifically to help the end-user make the best use of daylight. They come in a wide range of shapes and sizes, with a choice of glazing and ventilation options.

Polycarbonate Rooflight Glazing Options

Thermadome upstands are designed for use with Thermadome rooflights and as a result provide the best thermal interface when combined as a unit. This helps to make the roof more thermally efficient and cuts down on energy bills.

Kerb Options For            Rooflights

Fresh air is as important in any space as natural daylight and to ensure the finished room gets the right amount Thermadome rooflights come with a range of ventilation options to suit every requirement.


Therma-Vent smoke vents/AOVs are designed to reduce smoke build-up, thus providing a safer escape route for occupants and access for fire-fighting personnel. The system can also be utilised to provide natural ventilation.


For roof spaces requiring access, the hinged access hatch frame opens to 85° which is enough for safe passage. The access hatch frames can be mounted onto an existing upstand or to a Thermadome upstand.

The Therma-View rooflight is the latest and most energy efficient addition to our range. Combining glass and domed ploymer glazing the Therma-View rooflight delivers improved U-values without increasing the solar gain.

Therma-View Rooflight

Suntubes provide an elegant solution to getting daylight from the roof into awkward spaces. Essentially suntubes work by directing daylight at roof level through reflective internal tubing, into the space where it is diffused at ceiling level.

Sun Tube Rooflight

We recommend you use the following guide to help you work out exactly what you need to specify for your project. The National Domelight team will be happy to help you apply the results to a full specification.

Rooflight Measuing Guide

To ensure that you get the right rooflight for the space the Thermadome range is available with various options. Here are some of the more popular options available in addition to the standard rooflight range.

Thermadome Available Sizes

A photo gallery showing the range of Thermadome polycarbonate rooflights.

Thermadome Photo Gallery

Thermadome Video

If you would like assistance at any time about any of the rooflights or would like further details of our range, then please do not hesitate to contact us on 01276 451555, e-mail us at or use this e-mail form to contact us.