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SolarLite FAQ

What is the light output of a HandiLite SolarLight?


The HandiLite Solar Skylight product is intended to provide an alternative to traditional skylight products, and as such is designed so that the light emitted by the ceiling level diffuser fluctuates with the amount of ambient light outside; in the same fashion that a traditional ‘specular’ skylight would.

For this reason to quote a light production level for this product, using a term such as ‘Lumens’ may be construed as misleading. ‘Lumens’ is a term usually used to designate the amount of light produced by a ‘static light source’, meaning a source of light that does not fluctuate or vary as a result of outside factors.


 In the case of the HandiLite SolarLight the light source will vary in a manner directly proportional to the amount of light the solar collector is receiving at any given time. This will mean that on a cloudy day the light panel will give off less light than on a day when the solar collector is receiving direct sunlight.


The measuring of ‘Lumens’ for a product such as the SolarLight can be problematic. When measuring lumens an accurate measurement is only possible when the solar collector is exposed to static light source - which is fundamentally contradictory to the intended use of the product. Also there is no recognized standard for taking such a measurement for this type of product.


HandiLite has undertaken a performance testing regime during which the solar collector has been exposed to a constant 100 watt light source from a distance of 1 metre. Subsequently our ‘lumens’ measurement has then been taken from a distance of 500mm from the light diffuser.  Using these parameters we have achieved a repeatable light measurement of 950 -1020 Lumens.

However, as the use of the product in its real life application will expose the solar collector to a wide range of light conditions these measurements are intended as a guide only, and cannot be guaranteed in differing conditions.

Will I need to cut holes in my roof when installing a SolarLight?

When installing a HandiLite SolarLight in a metal roof it will be necessary to drill a small hole of approximately 8-10mm through which to pass the power lead. It is then important to correctly seal around this hole to prevent future water ingress.

When installing the HandiLite SolarLight to a tile roof the power lead can be simply run into the roof cavity by guiding it up under an existing tile.

Is there an allowance to connect power to the SolarLight?

The HandiLite SolarLight is designed to replicate the functionality of a traditional specular skylight. Because of this the amount of light produced will fluctuate during the course of the day rather than the unit being a constant light source. At night when there is no ambient light outside the unit will produce no light internally.

The product is not designed to be connected to mains power or to be turned on and off at a wall switch like a standard light fitting.

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