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5 Common Roofing Mistakes to Be Aware Of

Your roof is one of the most critical components of your home, providing protection from the elements and maintaining the structural integrity of your house. However, even the best roofs can develop problems over time, and many of these issues stem from common roofing mistakes made during installation or maintenance.

In this blog post, we will delve into these common roofing mistakes, including:

  • Errors committed by roofing contractors
  • How to identify signs of damage
  • What steps to take if you suspect a roofing mistake
  • Warranty coverage for repairs
  • Tips on finding a reliable roofing contractor

5 Common Mistakes Made by Roofing Contractors

ripped off strip of shingles

Nobody is perfect, and that includes your contractor! Here are some of the most frequent mistakes homeowners notice.

1) Poor Quality Materials

One of the most common mistakes made by roofing contractors is the use of subpar materials to cut costs. Low-quality roofing materials can lead to premature deterioration, leaks, and other problems. Always inquire about the materials your contractor plans to use and do your research to ensure they meet industry standards and are suitable for your specific roofing needs.

2) Lack of Proper Ventilation

Roofing contractors often overlook the importance of proper ventilation in the attic and under the roof. Inadequate ventilation can lead to moisture buildup, which can cause the roof to deteriorate faster, encourage mold growth, and result in energy inefficiency. Ensure your contractor pays attention to proper ventilation during installation or repairs.

3) Poor Installation Practices

Improper installation is a common roofing mistake that can lead to numerous issues. This may include inadequate sealing, improper flashing around roof penetrations, and incorrect shingle installation. These errors can result in leaks, poor insulation, and a shortened lifespan for your roof.

4) Neglecting Flashing

Flashing is a critical component of any roofing system, designed to seal areas where your roof intersects with walls, chimneys, or vents. Roofing contractors sometimes overlook or incorrectly install flashing, leaving vulnerable areas susceptible to water infiltration and damage.

5) Insufficient Roof Slope

The slope of your roof is essential for proper water drainage. Roofing contractors may miscalculate or not pay enough attention to the required slope, leading to ponding water, which can eventually lead to leaks, structural damage, and other issues.

Signs of Roofing Damage

  • Leaks: Water leaks are one of the most obvious signs of roofing damage. Look for water stains on your ceiling, walls, or in your attic. Don’t underestimate even small leaks, as they can lead to significant problems if left unaddressed.
  • Missing or Damaged Shingles: Check your roof regularly for missing or damaged shingles. Shingles protect your roof from the elements, and any gaps or damaged pieces can expose the underlying structure to potential damage.
  • Sagging Roof: A sagging roof may indicate structural issues that require immediate attention. This could result from poor installation, water damage, or a weakened support structure.
  • Granule Loss: Asphalt shingles have protective granules that shield them from UV rays and other environmental factors. If you notice excessive granule loss, it’s a sign that your shingles are deteriorating and may need replacement.
  • Increased Energy Bills: A sudden increase in your energy bills could be a sign of roofing problems. Insufficient insulation or ventilation can lead to temperature fluctuations and higher heating or cooling costs.

What to Do If You Suspect a Roofing Mistake

If you think your contractor has made a mistake, it can feel easy to get upset. The key is to stay calm, and follow these steps to get the results you want.

Contact Your Contractor

If you suspect that a roofing mistake has been made, your first step should be to contact your roofing contractor. Share your concerns and ask them to assess the situation. A reputable contractor should be willing to inspect and address any potential issues.

Get a Second Opinion

In some cases, it’s wise to seek a second opinion from an independent roofing inspector or another contractor. This unbiased assessment can help you determine the extent of the problem and whether the original contractor’s work was indeed subpar.

Document Everything

Keep detailed records of your communication with the contractor, including emails, phone calls, and written estimates. Take photos or videos of the suspected issues to have a visual record of the damage or mistakes.

Warranty Coverage for Roof Repairs

More often than not, if a mistake occurs, it will be covered by your warranty and come at no extra cost to you.

  • Manufacturer’s Warranty: Most roofing materials come with a manufacturer’s warranty that covers defects in materials. However, these warranties often require proper installation and maintenance, so it’s essential to hire a qualified roofing contractor to ensure your warranty remains valid.
  • Contractor’s Workmanship Warranty: Many reputable roofing contractors offer a workmanship warranty to cover installation and labor-related issues. Review your contract to understand the terms of this warranty and the duration it covers. If you encounter problems, contact your contractor to discuss warranty-related repairs.
  • Insurance Coverage: If the roofing mistake results in significant damage, you may be able to file a claim with your homeowner’s insurance policy. Consult with your insurance provider to understand the coverage available and the process for making a claim.

How to Find a Quality Roofing Contractor

two roofers pulling up shingles

  • Ask for Recommendations: Start your search for a roofing contractor by asking friends, family, and neighbors for recommendations. Personal referrals can provide valuable insights into a contractor’s work quality and reliability.
  • Check Credentials: Verify the contractor’s credentials, including licenses, insurance, and certifications. Ensure they are compliant with local regulations and have adequate liability and workers’ compensation insurance.
  • Obtain Multiple Quotes: Get quotes from multiple roofing contractors to compare pricing, materials, and proposed timelines. Avoid choosing the lowest bid without considering the contractor’s reputation and qualifications.
  • Check References: Ask the contractor for references from past clients. Reach out to these references to inquire about their experiences and satisfaction with the contractor’s work.
  • Read Online Reviews: Read online reviews and check the Better Business Bureau (BBB) or other consumer protection organizations for any complaints or negative feedback about the contractor.

Get a Roof Replacement You Can Count On

Avoiding common roofing mistakes and addressing them promptly is essential to ensuring your roof’s long-term durability and performance. If you suspect a roofing mistake, quickly contact your contractor, seek a second opinion, and document everything. Understand the warranty coverage available to you and explore your options for repairs or replacements. Lastly, when seeking a roofing contractor, prioritize quality, reputation, and reliability to ensure your roofing project is a success and your home remains well-protected for years to come.

If you want a roofing contractor you can trust, look no further than Greentek Roofing! Contact us today to get started!


“GreenTek was awesome to work with. My rep James was easy to get in contact with and answered all my questions and made the process quick and smooth. The roof came out great and everything was finished on time and they handled everything with my insurance company so I didn’t have to. It made the process stress free for me.”

-Dylan O.

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