Why Asphalt Roofs Fail
Many homeowners expect an asphalt shingle roof to last 20–25 years. However, modern asphalt shingles often wear out sooner due to reduced asphalt content and manufacturing changes. Common problems include:
- Curling and cupping
- Granule loss
- Premature weathering
- Damage from freeze-thaw cycles
Asphalt roofs are especially vulnerable along eaves and other high-stress areas, where heat, moisture, snow, and ice accelerate deterioration. While long warranties may sound reassuring, they don’t always reflect real-world roof lifespan.
Metal roofing is different.
Investment-grade metal roofing systems are engineered to withstand harsh Northern Wisconsin and Michigan’s Upper Peninsula climates. Unlike asphalt, metal won’t crack, curl, or degrade from extreme temperature swings.
American Metal Roofs of Northern Wisconsin installs lifetime metal roofing systems built for long-term durability, energy efficiency, and lasting curb appeal. When you choose metal roofing, you’re investing in a stronger roof designed to protect your home for decades.
What Industry Experts Say
When it comes to shingles, the drawbacks center on service life. While asphalt shingles come with warranties ranging from 20 to as long as 45 years, roofers and builders remain skeptical of those warranties. Since warranties are a marketing device, they are not a reliable predictor of lifespan. In recent years, many homeowners have experienced asphalt shingle failure well before warranties expired, often with limited warranty coverage for repairs or replacement.
Bob Vila
Asphalt Shingle Manufacturers
Due to the severity of the roof environment, even a one-year-old roof may look different from a roof that was just installed. Cracking, blistering, and other weathering characteristics may not be visible from ground level but can still affect roof performance.
Roofing Consultants
Market pressures have led manufacturers to reduce fiberglass mat weight and increase filler content, which can compromise shingle durability and long-term performance.
Dwain Bouton, President
Certified Roofing Consultant
Laboratory Testing Facilities
Failed shingles we have tested contain approximately 30 percent asphalt by weight. New shingles often contain less than 25 percent. The asphalt is mixed with fillers and mineral matter, which can contribute to early deterioration and moisture-related issues.
Richard Tippet
Applied Roofing Technology