Nail it to the side edges of the frame or curb of the skylight.
How to install roofing around skylights.
Cut the metal flashing based on the length you determined but adding an extra two inches.
The roofing felt and step flashing helps keep water from leaking around the skylight.
Cover the bottom flange with a strip of membrane that extends 6 inches past the skylight s sides.
Cut the extensions at a 45 degree angle out from both corners of the skylight.
Drive roofing or flashing nails horizontally into the skylight not vertically into the roof.
Attach the bottom sill of the flashing.
The bottom sill will be a u shaped metal piece that slips over the bottom of the skylight.
How to roof around a curb mount skylight.
Next slip individual pieces of step flashing under the shingles.
For ease of installation bend the cut piece of flashing to about 85 degrees.
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 bottom flashing a single piece that wraps partway around the skylight and sits on top of the roof shingles figure 3.