The answer to 'when to replace roof replacement' is that most roofs need to be replaced every 20-30 years, depending on the roofing material and local climate conditions. Asphalt shingle roofs typically last 15-25 years, while metal, tile, and slate roofs can last 40-75 years with proper maintenance. Signs it's time to replace your roof include extensive wear, leaks, damaged shingles, and increased energy costs.
Replacing your roof is a major home improvement project, so it's important to work with a professional roofing contractor who can assess your roof's condition and provide recommendations. They can also help you choose the right roofing materials and ensure the installation is done properly to protect your home.