The north side of the roof plays less of a factor in collecting the sun’s light with a 5/12 pitch. When you have a 7/12 pitch or greater, the side of the roof plays more of a factor. The steepness of the roof may put the sun tunnel skylight in the shadows, if installed on the north side of the house.  Even in the shadows the sun tunnels gather light.

Cloudy days you will still get enough light to light up a room. Just not as bright.

If your roof is on 2 different levels this may also affect the daylighting effect. If you need the sun tunnel on the lower roof level, the upper roof may create a shadow for a part of the day. Remember that even in the shadows the sun tunnels gather the sun’s light.

Here is a picture of the lens to the tubular skylight being installed inside the house.

This picture was also taken at 1 o’clock in the afternoon. This is a cathedral ceiling with a dark stone wall. Darker walls will absorb more light then lighter walls. Remember this when figuring the size of the sun tunnel you want to install.  Because of the ceiling and the stone wall we installed a 14” sun tunnel.

The length of the tunnel need to reach the room has some effect on the light produced. Most cases the length will not play a factor.

Natural light introduce into a room makes for a friendlier atmosphere. The affects of daylighting on your life will be a positive experience.