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To install a 50-foot long ridge vent, a roofing contractor will charge $409, which includes the labor and material. If you're a handy homeowner who has experience working on roofing projects, you can buy the ridge vent material for $125 and install it yourself, saving 69 percent, a nice reward for your work.
1 Ridge vents â A ridge vent runs the entire length of the roof peak. 2  A ridge vent with external baffles and an internal weather filter, combined with soffit venting, is the most efficient system you can install. 3  Gable vents are louvers with screening that are installed in the gable walls of the attic.