Installing a new roof is a significant investment, and discovering that your new shingles aren't laying flat can be incredibly frustrating. This issue, while seemingly minor, can compromise the roof's weather resistance and overall aesthetic appeal. This comprehensive guide will explore the common causes behind this problem and provide practical solutions to get your roof looking its best and performing optimally.
Why Aren't My New Shingles Laying Flat?
Several factors can contribute to new shingles failing to lay flat. Understanding these root causes is the first step towards effective remediation.
Improper Installation:
This is the most common culprit. Even minor errors during installation can lead to significant problems later. Issues include:
- Insufficient Nail Penetration: Shingles need to be properly secured with nails driven deeply enough to hold them firmly in place. Under-nailing can cause lifting and curling.
- Uneven Nail Placement: Nails should be placed strategically within the designated nail line to ensure even distribution of weight and prevent buckling.
- Incorrect Overlap: Shingles need to overlap correctly to create a seamless and waterproof barrier. Inadequate overlap can leave gaps, allowing moisture penetration and leading to shingle lifting.
- Improper Starter Course: A flawed starter course (the first row of shingles) can cause subsequent rows to misalign and not lay flat.
Temperature Fluctuations:
Asphalt shingles are susceptible to temperature changes. Extreme heat can cause the shingles to expand, while cold temperatures can lead to contraction. This expansion and contraction can sometimes result in minor lifting or curling, especially if the shingles weren't properly installed.
Moisture Issues:
Unexpected moisture beneath the shingles, possibly from inadequate underlayment or leaks from elsewhere on the roof, can cause them to lift. This moisture can weaken the adhesive and cause buckling.
Defective Shingles:
Although rare, there's a possibility the shingles themselves are defective. Manufacturing flaws can lead to inconsistent thickness or inadequate adhesive, causing them to curl or lift. Check with your supplier if you suspect a batch-wide issue.
How to Fix Shingles That Aren't Laying Flat?
Addressing this issue depends on the underlying cause.
Reapplying Shingles (If Installation Error):
If the problem is due to improper installation, the best course of action is often to re-install the affected shingles. This may require professional help, especially if significant portions of the roof are affected. It's crucial to address the installation errors, such as nail placement or overlap, to prevent recurrence.
Waiting Out Temperature Changes:
Minor lifting due to temperature fluctuations often resolves itself as the weather stabilizes. However, if the lifting is severe or doesn't improve after a few weeks, professional intervention is needed.
Addressing Moisture Problems:
If moisture is the culprit, this needs to be resolved promptly to prevent more severe damage. This might involve locating and repairing leaks, ensuring proper ventilation, and replacing damaged underlayment. A professional roof inspection is recommended to pinpoint the source of moisture.
Contacting the Manufacturer:
In cases of suspected defective shingles, contact the manufacturer immediately. They may have a warranty covering such defects and can assist with replacement or repair.
What If I Can't Fix It Myself?
For extensive or complex issues, it's best to contact a qualified roofing professional. They have the experience and tools to accurately diagnose the problem, perform necessary repairs, and ensure your roof is properly protected. A professional inspection can prevent further damage and save you money in the long run.
How Can I Prevent This in the Future?
- Choose a Reputable Contractor: Hire a licensed and insured roofing contractor with positive reviews and proven experience.
- Inspect the Shingles Before Installation: Check the shingles for any defects before they go on the roof.
- Ensure Proper Ventilation: Adequate roof ventilation is crucial to prevent moisture buildup.
- Regular Roof Maintenance: Schedule regular inspections to catch potential problems early.
By understanding the potential causes of shingles not laying flat and taking proactive steps, you can ensure your new roof provides lasting protection and beauty. Remember, addressing the issue promptly is key to preventing more significant and costly problems down the road.
