The answer to 'roof installation cost' is that the cost of a new roof installation can vary significantly depending on several factors. These include the size and pitch of your roof, the type of roofing material used, the complexity of the installation, and your location.
Generally, homeowners can expect to pay anywhere from $4,000 to $20,000 for a full roof replacement, with the average cost being around $10,000 to $15,000. However, it's essential to get local quotes from reputable roofing contractors to get an accurate estimate for your specific project.