find screw on roof and place flashing over it
trace around inside of flashing with lumber crayon
cut hole using reciprocating saw
Install the Flashing
Take the flashing and the solar dome, the crayon, utility knife, reciprocating saw, caulking gun, roof sealant, tape measure and screws to the roof. On the roof, find the screw and place the flashing over it (Image 1).
Next, trace around the inside of the flashing with a lumber crayon.
With the utility knife, carefully cut the shingles 1/2" outside the line just drawn(Image 2).
Flip the flashing upside down, lay it on the roof and trace around the inner circumference.
Using a reciprocating saw, cut a 14" hole around the outside edge of this latest crayon mark (Image 3).