How Long Do Roofs Last in Illinois? Real Lifespans by Material
Material lifespans, what shortens them, and when it's time to start planning.
Asphalt shingles: 18-25 years
Most architectural shingles installed in Illinois in the last decade carry a 30-year manufacturer warranty, but the realistic functional lifespan in Chicago weather is 18-25 years. Standard 3-tab shingles are closer to 15-18 years.
Metal: 40-60 years
Properly installed standing seam metal roofs can last 40-60 years with minimal maintenance. The upfront cost is higher, but for forever homes the math often works out.
Cedar shake: 25-30 years
Cedar shake on a well-ventilated roof in Illinois usually lasts 25-30 years. Without good attic ventilation, that drops fast.
What shortens lifespan
The biggest factors that shorten Illinois roof life are poor attic ventilation, ice dam damage, hail strikes, tree debris and overhanging branches, and improper installation in the first place. A roof installed correctly with good ventilation will outlast one slapped on quickly by 5-10 years.