Wrap the top part around the skylight s frame as shown and press the other part against the roof.
How to install roofing around skylights.
Cut the metal flashing based on the length you determined but adding an extra two inches.
On each side start at the bottom and work up.
Next slip individual pieces of step flashing under the shingles.
Cover the side flanges then the top in the same way.
Cut the extensions at a 45 degree angle out from both corners of the skylight.
The roofing felt and step flashing helps keep water from leaking around the skylight.
Nail it to the side edges of the frame or curb of the skylight.
For ease of installation bend the cut piece of flashing to about 85 degrees.
How to roof around a curb mount skylight.
Drive roofing or flashing nails horizontally into the skylight not vertically into the roof.
Install the bottom flashing a single piece that wraps partway around the skylight and sits on top of the roof shingles figure 3.
Contractor larry landers demonstrates how to install roofing shingles around skylights.
Attach the bottom sill of the flashing.