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Warning Signs that You Need a New Roof in Iowa

July 1, 2025/in Siding/by Audrey Heaberlin

Iowa’s harsh weather can take a toll on even the most durable roofing systems. If your home’s roof is more than 15 years old or has recently weathered hail, snow, or high winds, it’s wise to assess its condition. Homeowners should be aware of the common signs that indicate when their home’s roof may need attention or replacement. Spotting the signs early can help you avoid water damage, insulation problems, or costly structural repairs.

Introduction to Roof Replacement

Roof replacement is one of the most important investments homeowners can make to protect their house and maintain its value. A new roof not only boosts curb appeal but also serves as the first line of defense against Iowa’s unpredictable weather, including heavy rain, strong winds, and intense sunlight. Asphalt shingle roofs, which are common in Iowa, typically last between 20 and 30 years, but their lifespan can be shortened by severe weather or lack of maintenance. If you notice missing shingles, curled shingles, or roof leaks, it’s a clear sign that your roof may be nearing the end of its life. Consulting a reputable roofing contractor for a thorough roof inspection can help determine if a full roof replacement is necessary. Staying proactive with regular inspections and timely repairs can help you avoid expensive repairs down the road and ensure your roof continues to protect your home for years to come.

Key Takeaways

  • Missing, curling, or cracked shingles indicate aging or storm damage.
  • Granule loss, roof leaks, and interior stains point to failing waterproof protection.
  • Sagging, mold, and daylight in the attic are urgent red flags.
  • Routine inspections by certified professionals extend roof life and catch issues early.

Curling, Cracked, or Missing Shingles

Visible shingle damage is one of the most obvious signs you need a new roof. If many shingles are cracked, missing, or damaged, it is a strong indicator that the roof is deteriorating. Shingles that curl upward, especially when the shingle tabs are cupped or curled, split down the middle, or go missing altogether can’t keep water out. In Iowa, wind and hail can cause accelerated shingle deterioration—especially in older asphalt roof systems.

Replacing individual shingles may help temporarily, but widespread damage usually signals it’s time for full replacement.

Bald Spots and Granule Loss

Asphalt shingles have granules that protect against UV rays and help shed water. These granules are made of crushed stone, which forms a protective layer on the shingles and gradually sheds over time as the roof ages. When these granules wear off, shingles lose their effectiveness. Look in gutters and downspouts for loose granules—especially after a storm—or on the ground, as their presence is a warning sign of roof aging.

Granule loss ages a roof quickly, especially during hot Iowa summers or after hail impact. If you notice shiny, smooth shingle patches, contact a roofing professional for an inspection.

Roof Leaks and Water Stains

Even a small leak can cause major structural damage if ignored. Water entering through the roof often reveals itself as stains on ceilings, wet spots in the attic, or bubbling paint along walls.

Iowa’s freeze-thaw cycles can widen gaps and cracks, letting water in and increasing the risk of leaking roofs, which can lead to mold, rot, and insulation damage. A roof leak is often the result of aging materials or storm damage, and should be addressed promptly. If you see signs of moisture, schedule a roof inspection immediately.

Sagging or Soft Spots

A sagging roofline usually means water damage has compromised the roof decking, the wooden support structure beneath the roof surface. It may feel soft or spongy underfoot—especially after rain or snowmelt. Rotting boards in the attic or roof structure are a clear sign of moisture problems and may require immediate attention. This condition is most common in older homes or those with long-unchecked leaks.

In Iowa, where snow and ice load can be substantial, sagging roofs can be a safety hazard and should be addressed immediately.

Daylight in the Attic

If you can see sunlight shining through the roof boards, that’s a clear indication of gaps or holes. Visible damage, such as holes or gaps in the roof boards, can allow daylight and moisture to enter the attic. You may also feel drafts or notice temperature fluctuations, which signal energy inefficiency.

Daylight through your roof often means missing shingles, flashing gaps, or decayed wood. Waddle Exteriors inspects attic spaces as part of every roofing consultation.

Excessive Moss or Algae Growth

Iowa’s spring humidity can lead to moss or algae buildup—especially on shaded roof areas. Algae growth often appears as dark streaks on the roof, which, while not immediately damaging to shingles, can negatively impact your roof’s appearance. While some growth is cosmetic, large patches indicate moisture retention that breaks down shingles.

Left unchecked, moss can lift shingles and trap water underneath. A roof cleaning may help, but if growth has compromised the structure, a replacement could be necessary.

Age of Roof Materials

The roof’s age is a key factor in determining when replacement is needed. Most asphalt shingle roofs last 15–30 years depending on installation quality and ventilation. If your roof is reaching this age—and especially if you’re seeing other signs—it may be time to plan a replacement. If your roof is showing signs of wear, it may need to be replaced within a few years to prevent further damage.

Waddle Exteriors can evaluate your roof’s condition and provide guidance based on age, condition, and structure.

Rising Energy Bills

Poor roof insulation and attic ventilation can allow heat to escape in the winter and enter during the summer. If you notice higher heating or cooling costs, your roof may be part of the problem.

Properly vented and insulated roofing systems improve comfort and reduce utility bills for Iowa homeowners. A well-maintained roof is essential for protecting your home from energy loss and weather-related damage.

Neighborhood and Environmental Factors

The longevity and condition of your roof are often influenced by factors beyond your immediate control. Iowa’s weather, including frequent hail storms and high winds, can accelerate wear and tear on roofs, making regular inspections even more important. If your home is surrounded by large trees, you may notice increased moss growth or debris accumulation, both of which can negatively impact your roof’s health and lead to moisture problems. Additionally, if you see many neighbors installing new roofs, it could be a sign that your area’s homes are reaching the age where roof replacement is common. Environmental factors like improper installation, poor ventilation, or the use of subpar roofing materials can also shorten your roof’s life. A roofing professional can assess these neighborhood and environmental influences and recommend the best approach for maintaining or replacing your roof, helping you avoid bigger problems in the future.

Maintenance and Inspection

Consistent maintenance and regular roof inspection are key to extending the life of your roof and preventing costly repairs. Homeowners should inspect their roofs at least twice a year, looking for warning signs such as missing granules, cracked shingles, sagging roof boards, or water stains in the attic. Don’t forget to check your gutters and downspouts for shingle debris, which can indicate roof deterioration. Inside your attic, be on the lookout for mold, moisture, or leaks, as these can signal water damage that needs immediate attention. Scheduling a professional roof inspection can uncover hidden issues and provide peace of mind. Keeping gutters clean and ensuring proper drainage will also help reduce the risk of leaks and structural damage. By staying vigilant with maintenance and inspections, homeowners can catch problems early, avoid expensive repairs, and maximize the life of their roof.

Full Replacement Considerations

When it’s time to consider a full roof replacement, several important factors come into play. The type of roofing material you choose—whether asphalt shingle, tile roof, or another option—will affect durability, cost, and the overall look of your home. For example, asphalt shingle roofs are popular for their affordability and ease of installation, but they may require reinforcement to withstand Iowa’s strong winds. Tile roofs offer greater longevity but are heavier and may need additional structural support. The condition of your existing roof boards and the potential for structural damage should also be evaluated before starting a re roof project. A trusted roofing contractor can help you assess your options, taking into account your budget, insurance coverage, and local building codes. By carefully considering these factors, homeowners can make informed decisions about whether to repair or replace their roof, ensuring their home remains safe and protected for years to come.

FAQs

How often should I inspect my roof?
At least twice a year—ideally in the spring and fall—and after major storms. Having your roof inspected by a professional ensures that all issues are identified early.

Can a roof be repaired instead of replaced?
Sometimes. A professional inspection can determine if a repair is sufficient or if a full replacement is more cost-effective. Obtaining an estimate from a roofing contractor can help you decide between repair and replacement.

Do I need to be home for the roof inspection?
It’s helpful but not required. Our team can provide photos and a full summary if you’re unavailable.

Will insurance cover roof replacement?
It depends on your policy and whether the damage is storm-related. Your insurance company may require a professional assessment before approving coverage. Waddle Exteriors can assist with insurance-related restoration coordination.

Is roof replacement noisy or disruptive?
There will be some noise during installation, but we work efficiently to minimize disruption.

Wondering If It’s Time for a New Roof?

If your roof is aging, damaged, or driving up your energy bills, Waddle Exteriors offers free in-home consultations and detailed inspections. When assessing your roof’s condition, be sure to inspect the driveway for shingle debris or loose granules, as these can be early signs of roof issues. Don’t forget to check the gutter for blockages, rust, or damage, which may indicate water flow problems and potential roof deterioration. The roof’s health also depends on the condition of other elements, such as flashing and ventilation, so a thorough inspection is essential. If you notice multiple warning signs, it may be time to replace or even replace your roof to ensure ongoing protection for your home. Our certified crews will provide honest recommendations, high-quality workmanship, and reliable roofing systems built for Iowa’s weather.

Our story

Founded in 1978, Waddle Exteriors has been a trusted home improvement contractor, providing roofing, siding, windows, and gutter installation in Des Moines, IA, and surrounding areas. We are renowned for our excellent workmanship and customer-first approach, with a 100% labor guarantee and free annual inspections.

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