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2 Sep 2014
29 Sep 2010
18 Oct 2016
vent needed. STEP 2. Instruction For Slots. After calculating the total length of Cobra® 4' rigid vent needed, determine the necessary slot opening required. Note: If installing on an existing roof, remove the cap shingles from the ridge. Roofs without a ridge board: cut a 7/8" opening along the ridge on each side (Figure A).
23 Mar 2015
10 May 2013
Cobra® Hip Vent Installation Demo. A summary overview guide for contractors on how to plan for and install GAF Cobra Hip Vent. Cobra® IntakePro™ Basic Installation Demo Video. Installing GAF Cobra® Ridge Vents and Attic Ventilation. GAF- Mastering The Roof (chapter 15) 90% of homes in North America are
Instructions for Slots Cap Shingle. Installation Ridge Vent. Installation Cut a 2” (5.1 cm) slot long ridge, 1” (2.5 cm) on each side. Leave uncut (closed) sheathing area of 6” (15.2 cm) at each end of the ridge. Cut through the sheathing only, avoiding roof trusses. (In houses with a ridge board, cut 3 1/2”. (8.9 cm) slot, 1 3/4
GAF- Mastering The Roof (chapter 15) 90% of homes in North America are inadequately ventilated. Attics need effective ventilation to keep homes cool. All manufacturers require attic ventilation. Intake and ridge vents working together are best. Refer to printed literature for exact specifications.
28 Aug 2012
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