Maximum Light Output:
Requires adjustable height vertical tube,
crystal clear dome and SunScoop.
Sunlight must be captured from the sun. In Canada this requires a
SunScoop, a device which redirects low angle sunlight through the dome and
down the tube. Without a large SunScoop the maximum benefits of your
suntube are lost, especially in the winter. Some manufacturers have no
adjustability to get the tube vertical or high enough to clear the roof peak
or the snow.
Requires long single tube sections (few or no
joins), highest quality tube.
Sunlight collected can easily be lost before getting to the room. The
light reflecting tube going from the roof to the room must have near perfect
reflectivity, few if any joins and no elbows if possible.
Every bend or join will result in less light in your room.
One 4 foot section of light tube gives a better final result than two 2 foot
sections. Elbows create significant loss of light. If needed they
should never be placed directly above the ceiling as this results in bright
and dark spots. Some manufacturers design their product with integral
elbows which lose light and are at the very top and bottom.
Requires deep translucent interior dome with
minimal attachments around it.
Sunlight can easily be lost or misdirected at the diffuser dome.
|Deep translucent diffusers illuminate the
room evenly, including the ceiling, without any harshness or glare|
|Flat ceiling fixtures form spotlights on
|Clear fixtures are harsh and uneven.|
|Prismatic fixtures appear brighter
(harshness) but actually deliver less light.|
|Pebble finish diffusers work well as a
|Trim rings or other attachments block
horizontal light transfer and reduce the blending of ceiling to dome.|