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Solarspot D-65 open ceiling light tubes, light up this factory unit in Dunfires

Solarspot® Ceiling Diffusers for every application

Solarspot ceiling diffusers are designed to distribute light evenly around the area below whilst providing additional thermal insulation, eliminating the damaging effects of UV and protecting the tube system contamination from dust or moisture. Our range of diffusers is designed to integrate with all ceiling types including solid, suspended-grids and open ceiling spaces. In addition to the options for various ceiling types, there is a large selection of lenses available to ensure the best distribution of light and aesthetic integration with the room.

Solarspot Ceiling Diffusers - Solid Ceilings

We are able to offer Solarspot ceiling diffusers in both circular and square options for use with hard, or plasterboard, ceiling in all sizes* in a variety of lens options.

*no square ceiling diffusers options are currently available for Solarspot D-90

Solarspot Ceiling Diffusers - Security and Fire options

For some special situations where high levels of fire-protection or security are required we are able to offer a range of metal transition boxes that can be supplied with either Saint Gobain glass or virtually indestructible laminated twin-layer Plexi-glass.

Solarspot D-38 helps to transform this Grand Designs build in St Albans

Solarspot Ceiling Diffusers - Circular options for D-25, D-38 & D-53

By far the most popular option for these sizes is the Solarspot Perlato diffuser, providing excellent light distribution whilst blending unobtrusively with plasterboard ceiling. These are supplied as standard for all three of these sizes.

syneco square diffusers

Solarspot Ceiling Diffusers - Square options for D-25, D-38, D-53 & D-65

Also available for these sizes is a range of square diffusers for use with plasterboard ceilings.

The Prismatic diffuser is supplied as standard. Additional lenses available: Satinated & Radial (Fresnel lens).

syneco diffuser suspended ceilings

Solarspot Ceiling Diffusers - Suspended ceilings D-38, D-53 & D-65

For suspended ceilings there is also a range of patented transition boxes for the D-38, D-53 and D-65that sit straight into standard 600×600 or 600x1200mm grid systems. These transition boxes can also be used to provide a flush, square diffuser option in plasterboard ceilings. Please ask for details.

syneco diffusers open frame

Solarspot Ceiling Diffusers - Open framed ceilings D-25, D-38, D-53, D-65 & D-90

For open framed ceilings, typically found in warehouses, retail and manufacturing spaces, Solarspot offers a range of ‘lamp’ diffusers available with a variety of lens options. Lamp rims are available in white and grey and there is also a spun aluminium finishing ring, providing a neat aperture in the underside of the roof or to allow it to be integrated into board-finished ceilings.

Solarspot – the world's brightest sun pipe

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Frequently Asked Questions

Can I have two tubes coming down from one roof dome?

Whilst it may seem desirable to limit the impact of the number of domes on a roof by spurring off a number of tubes from one source it simply isn’t practical or effective. It would result in complicated configurations of longer tubes that result in a very inefficient system. As with many things in life, keeping it simple will give significantly better results.

What about thermal performance?

According to the thermal engineers at the BBA, if a system is of similar size, with a similar construction and the same number of lenses then it will have much the same U-value as any other system of the same length and diameter. Not that you will read this if you look at a variety of our competitors websites. In truth, you can manufacture a U-value to virtually any level you like by insulating the tube to polar-like specifications and inserting numerous thermal lenses into the tube. One of our competitors quotes a U-value of 0.5 on one of their systems that the BBA tested and rated at 2.1. There’s no clear explanation of how this is done but what is not said is how much the light performance is diminished in the process. Clearly wrapping insulation will improve the thermal performance to a degree, and whilst this is not specifically required, it may be helpful in colder areas of the country. But this will only improve the U-value marginally – it’s like insulating around a window. To significantly improve things you need to add additional thermal lenses into the tube system itself. Whilst this will help prevent heat escaping, it will also prevent a percentage of light entering the system. Roughly speaking, each thermal lens reduces the light level by around 10%. So whilst you could improve the thermal efficiency of a solar tube to around 25% of the standard model, you will probably require two or three more units to bring the light level back up. In essence, all triple-lens units like ours, Solatube’s, SunPipe’s etc provide a thermally effective way of lighting an area via the roof. It all comes back to the most important function of any solar tube style system and that is ensuring that you are getting the maximum amount of daylight through the system size that you choose.

Solarspot sun tunnel for commercial applications
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