Because it s complex to build it adds about 1 500 to a professional installation.
How to install skylight through attic.
Then lay sheathing around the hole to prevent water leakages before inserting the skylight.
If the skylight is mounted above an attic you ll also need to cut and frame a hole in the ceiling of the room below it and frame a light shaft through the attic.
Perform a water test.
Cut the extensions at a 45 degree angle out from both corners of the skylight.
Cover the side flanges then the top in the same way.
Wrap the top part around the skylight s frame as shown and press the other part against the roof.
Install the flashing from the roof of the home and be sure not to attempt this step of the project alone.
Use the hole as a reference only because the skylight location should be adjusted to match up with the rafters.
Drill a hole through the roof at about the center of the skylight.
To install a skylight start by cutting a hole through the roof and ceiling from the outside that s large enough to hold the skylight.
Next drive 4 deck screws through the roof from the inside to hold the skylight in place.
A skylight installation happens in two phases.
A chase is a framed tunnel that channels light from the skylight through your attic space to the ceiling below.
If you re not familiar with basic carpentry practices or you are installing a large skylight that will require the removal of more than one roof rafter consult a professional builder.
Typically it s finished with drywall and painted.
Install the skylight according to the model specifications.
Finish the interior installation process last and check all seals before tackling any paint and plaster touch ups.