The frequency at which you should replace your roof depends on several factors, including the type of roofing material, climate, and maintenance. Generally, asphalt shingles last 20-25 years, wood shingles or shakes last 30-40 years, metal roofs last 40-70 years, and slate, clay, or concrete tiles can last 50-100 years. Harsh weather conditions and inadequate maintenance can shorten the lifespan of your roof. It is essential to inspect your roof regularly, especially after storms, and address any issues promptly to extend its life. If you notice signs of wear and tear, such as missing or damaged shingles, leaks, or sagging, consult a professional roofer to assess whether it’s time to replace your roof.