Step 1
Space vent openings evenly across ridge. The opening size should be a minimum of a 21/2” by 46” cut between 2 sets of rafters. Note: Do not cut into rafters.
Step 2
If shingle have previously been installed on the roof, remove the tiles around sides and top of opening to provide space to install vent as per instructions.
Step 3
Shingle courses should be installed close to deck opening so that the front flange of the vent completely covers unexposed section of shingle.
Step 4
Position the vent to cover the last course of shingles, leaving the proper exposed section of shingle at the side flanges of vent. Center vent over the opening of the deck. Apply approved sealant under front flange of vent.
Step 5
Fasten side and top flanges securely with minimum 11/4” standard roofing nails. Space nails approximately 4” on the center and approximately 11/2” from outer edge of flange.
Step 6
Secure the bottom flange with provided wood screws. Space screws evenly no more than 18” apart. A 4 ft. Vent will require a minimum of 2 screws.
Step 7
Apply roof cement on side and top flanges. Completely cover flanges 2” beyond flange onto underlayment with ¼” thick bed of plastic roof cement.
Step 8
Cut shingles to fit so flanges are completely covered. Press shingles into place to ensure they are bonded to the cement. Fasten shingles with nails per shingle manufacturer’s instructions.
