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 potentially concerning, is often addressable with the right knowledge and approach. This guide will explore the common causes of this problem and provide practical solutions to get your roof looking its best.
Why Aren't My New Shingles Laying Flat?
Several factors can contribute to new shingles refusing to lie flat. Let's delve into the most common culprits:
1. Improper Installation:
This is by far the most frequent cause. Improper nailing, inadequate sealant, or failure to properly align shingles during installation can all lead to curling, buckling, or unevenness. Insufficient underlayment or improper flashing around chimneys and vents can also contribute to shingle lifting.
Solution: If the installation is faulty, unfortunately, professional intervention is usually required. A qualified roofing contractor can assess the extent of the problem and implement corrective measures, which might include re-nailing, adding sealant, or even replacing sections of the roof. Document the issue with photos and contact your roofing contractor immediately.
2. Temperature Fluctuations:
Extreme temperature changes, particularly large swings between hot and cold, can cause shingles to expand and contract. This can lead to temporary curling or buckling, especially in newly installed roofing systems. This is generally more pronounced with asphalt shingles.
Solution: This issue is often temporary. As the shingles acclimate to the prevailing temperature, they should generally flatten out. However, significant and persistent curling could indicate a more serious underlying issue.
3. Underlying Roof Deck Issues:
A warped or uneven roof deck provides an unstable base for shingles, preventing them from lying flat. This can stem from improper initial construction or water damage to the underlying structure.
Solution: This problem requires a more extensive solution. Repairing or replacing the damaged roof deck is necessary before shingle installation can proceed correctly. This necessitates professional assessment and intervention.
4. Incorrect Shingle Selection:
Choosing the wrong type of shingle for your climate can contribute to issues. Some shingles perform better in certain weather conditions than others. For instance, a shingle designed for moderate climates might struggle to maintain its flatness in extreme heat or cold.
Solution: While this is less common as a direct cause of non-flat shingles immediately after installation, if the problem persists, consult a roofing professional to ensure you have the right shingles for your local conditions. They may recommend a different material altogether.
5. Moisture Problems:
Excessive moisture under the shingles can cause them to lift or buckle. This could be due to trapped moisture from improper ventilation, leaking flashing, or other moisture intrusion.
Solution: Addressing the source of moisture is critical. This might involve improving attic ventilation, repairing leaking flashing, or fixing other sources of moisture intrusion. The shingles themselves may need to be replaced if the damage is extensive.
What to Do if Your New Shingles Aren't Laying Flat
- Document the problem: Take clear photos and videos of the affected areas.
- Contact your roofing contractor immediately: Explain the situation and provide the documentation.
- Review your warranty: Most roofing installations come with a warranty that may cover such issues.
- Don't attempt DIY repairs (unless extremely minor): Incorrect repairs can worsen the problem and void warranties.
A professional assessment is usually the best way to determine the root cause and implement the appropriate corrective actions. Ignoring the problem can lead to more significant issues down the line, including leaks and premature shingle failure.
