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solar tube

In conjunction with Solalighting Ltd., SIG Design & Technology supplies Solatube Daylighting Systems. These are available as a kit of parts and makes up into a roof-to-ceiling daylight pipe available in two sizes: 250 mm and 350 mm diameters. The kit comprises dome, roof flashing, top and bottom tube assembly, extension tubes, reflective tubing, angle sections, diffuser and all fixings.

The reflecting light pipes are designed to extend through the roof space into the diffuser in the ceiling below. Tubes in the top roof assembly and the bottom assembly are designed with an angle converter which is a rotating section set at an offset in the tube to allow for any angle of tubing through the roof space. Straight extension tubes are available for greater roof spaces. The straighter the light pipe, the more light is transmitted.

Solatube Daylighting Systems are suitable for use on domestic or commercial buildings with new or existing pitched, tiled or flat roofs. The minimum pitch for a tile or slate roof is 15° and the maximum is 65°. Other custom-designed flashings are available to order, for greater pitches bitumen too.




Through our partnership with Eco Green Roofs (EGR), AccuRoof (SIG D&T) is leading the way in a new sustainable roofing solution which maximises space and delivers on the advantages of blue, green and PV roofs.

Through the partnership with EGR, SIG D&T is able to provide a new, innovative solution to the growing demand for eco-roofs. Typically, when approaching an environmentally responsible roofing solution, the options were a green roof, a blue roof, or perhaps a solar roof incorporating photovoltaic panels.

What SIG D&T and EGR offer is a new approach which blends the benefits of all three into an effective and comprehensive solution.

Introducing SolarNature
SolarNature is a complete roofing system, including the waterproof layer, green roof build-up and integrated photovoltaic installation. This solution is driven by the need to achieve both carbon net-zero and biodiversity net gain. Particularly in urban locations and on public projects, such as schools, where existing green spaces are often built over to provide additional facilities.

The SolarNature solution aims to maximise every single square metre to achieve the best insulation, attenuation with a layer of blue roof, biodiversity gain with a green roof, carbon zero with PV, and recreational planted spaces.

SIG D&T adopts a holistic approach to roof design, whatever type of system is being used, ensuring that key issues relating to fitness-for-purpose, safety, buildability, and warranties are considered from the outset.

The process begins by identifying the carbon net-zero and biodiversity net gain targets the roof(s) need to achieve. Working with as a team with EGR and the client, the design team take into consideration services affecting space, formats for the PV panels, wind mapping analysis, and overall weight and cost of the biosolar system.

Throughout the process, SIG D&T work closely with the client and EGR to ensure the specification and solution meet the needs of the project. From initial designs through to installation, SIG D&T offer support and expertise to ensure the solution is fit for purpose.

SolarNature can be installed by one of our a fully trained SIG Design & Technology Accredited Contractors (DATAC) or EGR. Supporting the system is a rolling warranty that lasts for the life of the roof if the system is properly maintained.

To find out if SolarNature is the right solution for you, contact your SIG D&T account manager or email [email protected]


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