Quick Answer

If your Ann Arbor home has curling shingles, leaks, or rising energy bills, it may be time for a roof replacement. According to GAF, roofs typically last 20–25 years, while the Michigan Department of Licensing and Regulatory Affairs recommends professional inspections every year due to the state’s harsh freeze-thaw cycles. Partnering with certified installers like Great Lakes Home Remodeling ensures long-lasting, weather-resistant protection with Owens Corning and GAF systems.

Why Roof Replacement Matters for Ann Arbor Homeowners

Michigan’s climate subjects roofs to constant temperature fluctuations, snow accumulation, and high winds. These conditions gradually break down roofing materials, leading to leaks, structural stress, and energy inefficiency. The Michigan Department of Environment, Great Lakes, and Energy (EGLE) notes that deteriorating roofs can also contribute to moisture intrusion and attic mold, both common in aging Ann Arbor homes.

7 Warning Signs Your Roof May Need to Be Replaced

1. Shingles Are Curling or Cracking

Asphalt shingles can warp due to UV exposure and humidity. GAF explains that curling shingles allow water to penetrate the underlayment, reducing protection and accelerating damage.

2. Missing or Loose Shingles After Storms

Michigan’s spring and fall windstorms frequently dislodge shingles. If multiple shingles are missing or detached, your roof’s waterproof seal is compromised, making replacement more cost-effective than repair.

3. Visible Leaks or Water Stains

Water stains on ceilings or walls are sure signs of roof failure. Owens Corning advises immediate inspection since leaks can spread through insulation, drywall, and attic structures if ignored.

4. Sagging or Uneven Roof Deck

A sagging roof deck often points to underlying rot or structural weakness. Moisture trapped beneath shingles causes plywood decking to warp, a serious issue that requires full replacement, not patchwork.

5. Granules in Gutters or Driveways

Granules from asphalt shingles protect against UV rays. Finding them in gutters or around downspouts means your shingles are deteriorating, shortening their remaining lifespan.

6. Rising Energy Bills

Aging roofs with poor insulation and ventilation lead to heat loss in winter and excess heat absorption in summer. Both Owens Corning and GAF emphasize that proper roof systems help maintain attic temperature balance, reducing energy costs.

7. Roof Age Exceeding 20 Years

Even if your roof appears fine, age matters. Most traditional roofs last 20–25 years, and after that, deterioration becomes inevitable, especially in regions like Ann Arbor, where temperature extremes stress materials faster.

Why GAF and Owens Corning Roofs Are Ideal for Michigan Weather

Both GAF and Owens Corning engineer roofing systems specifically for Midwest climates. GAF Timberline HDZ®shingles offer superior wind resistance, while Owens Corning Duration® shingles include SureNail® technology for stronger adhesion in high winds. Together, they provide roofs that can withstand Michigan’s seasonal extremes, from freezing snow to humid summers.

How Great Lakes Home Remodeling Helps Ann Arbor Homeowners

Great Lakes Home Remodeling, a certified GAF Master Elite® and Owens Corning Preferred Contractor, provides expert installation and full warranty coverage. Their crews understand Michigan’s local weather demands and tailor roofing systems for long-term durability, performance, and curb appeal.

Final Thoughts

Roof replacement isn’t just about improving curb appeal, it’s about protecting your investment and your family. For Ann Arbor homeowners, choosing Great Lakes Home Remodeling means getting a GAF or Owens Corning roofing system installed with precision and backed by decades of proven performance.