Average Hourly Cost: The average hourly cost for roof ventilation installation by a roofing contractor in 2023 is $80 - $120 per hour.

Cost Breakdown: The cost of roof ventilation installation includes the cost of materials such as ventilation accessories, labor for installation, and any additional services such as sealing the roof. The cost of materials will depend on the type and quality of the accessories used, while the labor cost will depend on the complexity of the job.

Factors That May Affect the Cost: Several factors can affect the cost of roof ventilation installation, including the type and quality of the accessories used, the complexity of the job, the location of the service provider, and the experience of the contractor. Higher-quality accessories and more complex projects will typically cost more, while experienced contractors may have higher hourly rates.