Tubular Skylight Instructions.

Instructions are provided on how
to install a tubular skylight.

Tubular Skylight
Installation Instructions

How to Install a Tubular Skylight

Dark Stairway

Have you always been a little frustrated
that the stairway or other location in your
home is not lighted as well as it should be.

The tubular tunnel skylight is the
alternative to flipping a light switch each
time you go down the stairs or any other
dark area in the home.

The tubular skylight will illuminate up to
100 square feet and once installed
provides free light. This a great way to
go green.

The tubular skylight is water tight, any
snow on the roof does not have to be
removed around it.

Pitched Rigid Sun
Tunnel Skylight

The skylight is a perfect solution for rooms
such as bathrooms, kitchens,
walk-in-closets and halls.

Tunnel Skylights bring bright white daylight
into small spaces and rooms where other
types of skylights will not fit.

The complete installation does not take
a lot of time and only few tools are
This is the easiest type of skylight to install,
only a round hole for the tube is required
in the roof and ceiling.

No cutting of rafters is required.

Tubular Skylights Installation

The tubular skylight is light, and weather
proof. The skylight kit consists of reflective
tubing, ceiling ring, diffuser and a sunlight

Check that all parts are in the box.
Note the kit comes with a 10-inch and a
14-inch circle template. Pay attention that
you use the correct template when cutting
the holes. The templates look alike, but
the 14-inch template is a bit longer.

There is no roof boot sealant with this kit,
so you have to buy it separate.

Pick a cooler day to work in the attic, as it
gets quite warm up there.
Working on a roof can be dangerous,
pick good weather with no wind or rain.
To avoid slippery asphalt shingles, choose
a dry day.

It may also be necessary to use a safety
rope on steeper roofs.

ODL tubular skylights will fit roofs with
a roof pitch between 3:12 and 12:12.
Roof pitch, is how far the roof drops
vertically for every 12 inches of horizontal

The straighter the tube is vertically, the
better the results, this places the dome
directly above the ceiling diffuser.
The more the dome is in the sunlight,
the brighter the light at the diffuser.
Pick a spot on the roof where it picks up
the most sunshine.

Survey the attic area for the desired
location. It should be free of wires,
plumbing, roof valleys and anything that
might prevent the install.

Clear the area of insulation and drive a
small 2 inch nail between the ceiling joists
in the approximate location.
Run a plumb line from the nail to the roof,
mark the center for the roof hole.
Drive a nail up through the roof, or drill a
hole and poke a piece of stiff wire such as
a straightened out clothes hanger through
the hole.
On the roof, this is easy to find and is the
center for the roof hole.

Go down into the room where the diffuser
will be installed, and find the nail
protruding out of the ceiling. Use this nail
as a center guide. Draw the circle using
the template and using a saw, cut the hole.

Up on the roof, find the wire poking out.
Use the circle guide to draw the circle on
the shingles.

To use the template, slip the one end over
a nail and on the other end, place a pencil
and draw a complete circle. Use the
shorter whole length of the template strip
for the ceiling and the longer, for the roof.
Drill a 3/8 inch hole into the roof plywood
to start the blade of a reciprocating saber
saw and then cut through the shingles and

On the roof, use a flat bar to break the
shingle seal above the cut
Remove any nails in the way.

The flashing of the tunnel skylight will slip
into place by laying it flat on the roof and
by gently sliding it uphill into place.

When you are sure, the fit is good,
remove the roof flashing and apply a roof
sealant completely around the hole on the
bottom of the flashing. Insert the flashing
back into place and secure the flashing
with the 2-inch screws and washers.

Cover any exposed nail heads with sealant.

Back in the room, turn the flip tabs of the
ceiling ring inward and place the trim ring
up into the hole in the ceiling.
Reach through the hole and turn the flip
tabs out, this will hold the ceiling ring in
place, do not over tighten.

Back on the roof, measure the length of
the tubing that is needed.
Measure the distance from the top of the
roof flashing (longest side) to the ceiling.

There is an upper section and a lower
section of tubing in the kit, choose the
smaller tube as the lower section.

The larger pipe flange, will not fit into the
ceiling ring properly.
Use tin snips to cut the tubing to length.

Drop the cut tubing through the hole in
the roof flashing with the flanged edge of
the tubing on the lower side, then press
gently downward until you feel it click
into place, in the ceiling ring.

Place the top tube dome onto the roof
flashing. Spin the dome until the letter N
on the dome faces north.

Press down snugly and secure the dome
with the short screws provided along with
the rubber washers, in the kit.
Drill 1/32 inch pilot holes. Do not over

Back in the room, install the glass diffuser
assembly to the ceiling ring.
To install, align the diffuser with the three
tabs on the trim ring and turn clockwise
until snug.

Installation is Complete!

Ceiling view

History of Skylights

The earlier skylights were built in such a
way that they could be to be opened.
Manual devices were incorporated to open
and close the unit.
One had to keep an eye on the weather
when the skylight was opened.
These earlier skylights often leaked.
Later versions of the opening version
were much improved because of better
materials, design and sealing.
Roof skylights started in Europe after
world war two. Tubular skylights were
invented in 1986 by Steve Sutton, an
Tubular skylights were introduced to the
US in 1992.


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