How much light will a Skytube give me?

That is a question we hear all the time. To try to answer that question for you we have prepared a graph that shows lux levels obtained from a selection of common wattage electric lights and a Skytube on days with different amounts of sunshine.
This give you a means of judging whether a Skytube is the answer to your lighting needs by enabling you to compare its performance with something you know, a standard electric light.

Performance Graph

Performance Chart

Measurement Particulars:		Please note these points:
Measurements made at 5G Miro Place, Albany, Auckland, New Zealand Room size 2.0m by 2.4m with a stud of 2.4m. The wall are painted a light creamy colour, ceiling white and the floor, aqua. Skytube 0.8m long, and has been installed for approximately 6 months. Readings taken directly below the light source with an EMTEK LX - 101 light metre positioned 900mm above the floor. Weather on the 20th August was overcast in the morning and sunny in the afternoon. While the 13th November was variably cloudy & clear.		These Lux readings are a measurement of light intensity not total luminance. There is a difference in the spread pattern of light from a standard electric light suspended below the ceiling and that of a down light recessed into the ceiling. The pattern of light from a Skytube is more like that of a wide angle down light. These readings are not intended for the comparison of performance of different tubular skylights as they are not under controlled conditions, nor are they a guarantee of performance in any particular installation.

Skytube NZ Ltd
Improving natural light within your home - natural, economic and environmentally friendly

Skytube Skylights
Transforming Dark Rooms - How Much Light Will I Get - Where Do I Install
SkyTube 240 - SkyTube 400 - SkyFlex 240 - SkyFlex 400 - SkyFlex 500 - SkyBox

Ventilation Systems
Skytube 240 Duo / Trio - WhirlyVent - Skyvent 150 / 300

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