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Solarspot D-53 open ceiling
D-53 for small offices
Solarspot D-53 for offices

D-53 Specification

Diameter: 550mm (22″)
Max Recommended Length: 18.0m
Coverage: Up to 32sqm
Efficiency: 65%

Solarspot D-53 – giving you natural daylight.

The Solarspot D-53 is at least 12% brighter than Solatube 330 DS and 30% brighter than the SunPipe 550.

The Solarspot D-53 is the most efficient 500mm solar tube system in the world. This mid-sized system is perfect used singly in spaces of up to 32sqm or used in multiples for larger office or work spaces.

Full range of Solarspot adjustable angles available.

Solarspot d-53 product

Solarspot D-53, 550mm diameter Tubular Daylight System

Delivering more daylight than any other system of a similar size, the Solarspot D-53 is perfect for lighting medium to large commercial and public spaces. Patented RIR™ technology located in the non-yellowing dome ensure that more daylight is captured and roof level and delivered into the heart of buildings where conventional windows are not an option.

RIR technology uses a series of Fresnel lenses located in the mouth of the system to redirect daylight, direct or diffuse, down into the tube to ensure that the maximum amount of light is delivered to the room below – whatever the weather.

Solarspot D-53 units can be supplied with various internal finishes making them suitable for solid ceilings and suspended ceilings in classrooms, offices, retail environments etc. as well as with ‘open-ceiling’ diffusers for warehouses. Systems can be specified in new-build projects and easily accommodated as part of any refurbishment of an existing building.

The Solarspot D-53 lights spaces up to 32sqm and is ideal for:
  • Educational buildings
  • Retail environments
  • Warehouses
  • Offices
Solarspot D-53 components:
  • Non-yellowing dome with RIR™ light capture lenses
  • Convas anti-condensation lens for increase thermal efficiency©
  • Extension tubes available: 200, 300, 400, 600 and 1200mm lengths
  • Flashings suitable for all virtually all roof types
  • Adjustable angle adaptors available: 0-30°, 0-60°, 0-90°
  • Range of circular and square diffusers available for solid and open-ceilings
D-53 Flat Roof systems

Solarspot Flat Roof Systems

The Solarspot spun aluminium flashing makes it perfect for any flat roof application. The rigid strong, flashing is perfect for GRP or single-ply roofs, and heat-resistant for any hot-process membrane system.

The unit is also a great option for green roofs providing a more aesthetically sympathetic solution than a curb-mount option.

D-53 curb-mounted systems

Solarspot Curb-Mount Systems

For roofs requiring a built up-stand, Solarspot curb-flashings are available in a range of sizes, in both square and circular options.

In addition to the range of standard sizes, bespoke units can be supplied to meet individual customers’ specifications.

Solarspot – the world's brightest sun pipe

What our customer’s think.

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Frequently Asked Questions

What should I look for when comparing product performance?

Independent, comparative testing using internationally recognised methodology – it’s as simple as that. And the thing to look out for is an efficiency figure. If a manufacturer is confident about the performance of their system they will quote an efficiency figure and then show how this compares to competitor products. Solarspot are the only manufacture of solar light tube systems to publicly publish these figures and that is because we know that, size-for-size, no one else will give you more daylight through a tube.

Check you are comparing products of the same size

Size is important, as the saying goes, but it’s not the end of the story. A wider tube will deliver more daylight than a narrower tube of the same length and with the same reflectivity. So it’s no surprise than that a Solarspot D-38 (380mm diameter) will deliver more daylight than a Solatube 290DS (350mm diameter) as the D-38 is roughly 10% wider. But the Solarspot D-38 will actually give you around 70% more daylight so how does that work? Well that brings us back to efficiency. The Solarspot D-38 44% more efficient than a Solatube 290DS, and when you then allow for the extra volume of the tube, the difference in the daylight delivered is massive. So-much-so that the smaller 250mm diameter D-25 will give you as much light as the larger, less efficient Solatube.

Do I need a BBA certificate?

Unless you are a developer that wants to include the solar tube in the 10-year NHBC cover then the answer is no. For the vast majority of customers retro fitting into their homes, fitting in their own self-build project, retro fitting into an office as part of a refurb or a new commercial development, you don’t need a BBA certificate. The BBA certificate is no guarantee of performance. In fact the only other sun pipe to hold a BBA certificate was the Sola Skylights Skytunnel, the worst performing solar tube ever tested by the BRE. Read the BRE test summary of flexible sun pipes

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