How Long Should Your Roof Last? Signs It's Time for a Replacement

Every roof wears out eventually. Knowing how long yours should last, and the signs that it's nearing the end, helps you plan a replacement on your schedule instead of after a leak.

Typical lifespans in Wisconsin: 3-tab shingles, 15 to 20 years; architectural shingles, 20 to 30 years; standing seam metal, 40 to 60 years; flat roof membranes like EPDM or TPO, 20 to 30 years. Our freeze-thaw cycles and summer UV tend to push roofs toward the shorter end of those ranges if ventilation is poor.

Sign one: age. If your roof is more than 20 years old and you don't know its history, it's worth an inspection even if nothing looks wrong.

Sign two: granules in the gutters. Shingles shed granules as they age. Heavy granule buildup in gutters or at downspouts means the shingles are losing their UV protection.

Sign three: curling, cupping, or cracking shingles. These show the asphalt is drying out and the shingles will soon stop shedding water reliably.

Sign four: missing shingles after normal wind. A healthy roof shouldn't lose shingles in an ordinary storm. If yours does, the sealant strips have likely failed.

Sign five: interior clues. Water stains on ceilings, damp attic insulation, daylight through roof boards, or a sagging roofline all point to problems that need attention right away.

Sign six: rising energy bills or ice dams. Often this points to ventilation or insulation issues that also shorten the life of your roof.

One or two signs might mean a repair is enough. Several together usually mean it's time to plan a replacement. A drone inspection gives you a clear answer with photos.