How much does roof ventilation installation cost?
Short answer. Roof ventilation cost varies widely because the job can be as small as swapping one box vent or as large as cutting a ridge slot, opening soffits and adding baffles throughout the attic. The cheapest time to do it is during a roof replacement, when ventilation is a handful of line items rather than a separate project with its own setup and shingle repairs.
What you might be paying for
- Exhaust: ridge vent by the linear foot, or static vents, turbines or fans each.
- Removing old vents: taking out box vents or turbines and patching deck and shingles.
- Intake: cutting openings in solid soffit, installing strip or rectangular vents, or adding edge intake vents at the eaves.
- Interior work: baffles in each rafter bay, pulling back insulation, connecting bath fans to proper caps.
- Repairs found along the way: rotted decking near the ridge or eaves from years of poor airflow.
What raises or lowers the price
Roof pitch, two-story height, how much of the shingle surface must be disturbed, attic access and whether insulation must be moved. A single story gable roof with open soffits is the simplest case. A steep, cut up hip roof with no soffit intake is the most involved.
Insurance and ventilation
On a covered storm claim, existing vents damaged by hail or wind are typically replaced like kind. New ventilation that did not exist before is generally an upgrade, unless code requires it and your policy includes coverage for code upgrades. See code upgrades and ordinance or law coverage.
Compare like for like
Ask for line items and the net free area math. Two quotes can differ simply because one includes intake work and the other does not. Read roof replacement cost in Georgia.