Cut out the Gooseneck Vent opening in the roof sheathing.
Size the opening in accordance with the chart shown. In the event a
mechanical vent fan is used, size the vent opening in accordance with
vent fan manufacturer's piping connection instructions.
Do not cut into trusses or rafters when cutting the opening in the roof.
Remove interfering shingle nails around the perimeter of
the opening so that the nailing flange of the vent lays flat to the roof
sheathing. Slide the top and side flanges of the vent up and under
shingles. Allow the bottom vent flanges to lay on the top of the
Care should be taken in keeping the vent properly aligned.
Vent pipe is sealed if utilized. Nail in place using 1-1/4" nails at
each corner. Roofing cement should be applied to all shingle edges near
the outer edge and around the entire perimeter as recommended in severe
weather coastal construction zones.