What Curling and Buckling Shingles Mean for Your Roof

Florida’s heat and humidity, along with the effects of hurricanes and frequent thunderstorms, are hard on shingles, making it even more important to keep a close eye on your roof for damage. Often this damage comes in the form of curling or buckling which can signal major issues with your roof. Both curling and buckling are most often caused by moisture of your roof decking or underlayment.

  • Buckling shingles appear as if they are being pushed upward from beneath. It can be the result of a lack of insulation or poor attic ventilation, as well as improper installation. 
  • Curling shingles have turned up edges, making the central part of the shingle look like it is sinking (a concave shape). Curling is common, and like buckling, negatively affects the appearance of your roof. The causes of curling can be poor quality materials or normal wear and tear. 

While you can identify either issue looking at your roof from the ground, at the first sign of buckling and curling shingles, you should call your trusted roofing professionals, like the experts at The Roof Guys, for an inspection. 

The Most Common Causes of Buckling and Curling Explained

Shingles Curling - The Roof Guys Florida

  • Moisture – Moisture is the most common cause of buckling and curling. It can be the result of moisture absorbed in the roof decking during the roof replacement process prior to the installation of your new roof. Unwanted moisture can cause the decking to shift and the shingles to buckle. Buckling may also be the result of the absorption of moisture by the felt underlayment which, in turn, causes it wrinkle pushing the shingles up. What causes the moisture in the first place? Many times, the moisture is caused by poor attic ventilation. Florida’s heat and humidity are the culprits. Without proper attic ventilation, that hot, moist air is trapped in the attic causing condensation which can make your shingle buckle or curl. Of course, this lack of airflow and subsequent backup of moisture can allow mold to thrive in your attic and rot your roof deck. Plus, in the hottest months of the year, your poorly ventilated attic makes your air conditioner work even harder, causing excess wear and tear on your unit while your utility bill increases exponentially. And if that isn’t enough, the buckling and curling caused by inadequate attic ventilation will make your roof wear out more quickly than it should, allowing high winds, hail, and storms to further damage your roof.
  • Improper Installation – Another common cause of roof buckling or curling is improper installation of your shingles. When the roof installer fails to use enough nails per shingle or places the nails incorrectly, the shingles can loosen, pulling up from the roof and resulting in curling or buckling. Another reason behind buckling or curling occurs when the tar lines (adhesive strips on the individual shingles) are not properly aligned and are unable to adhere correctly. When this happens during installation, the shingles may even begin to fall off. 
  • Multiple Layers of Roofing – Sometimes homeowners opt to install a new, second roof, atop the current, older roof. While not typically recommended by professional roofers, it is a cost saving measure for homeowners in which the new roof is placed directly over the old roof rather than removing the old roof and installing all new materials. As a result, the second layer of shingles are less secure, and curling and buckling may occur. This second layer is more susceptible to damage by storms and strong winds.  

The Roof Guys Can Help 

Our gutter gurus use the best materials for your home

When you notice curling or buckling of your shingles as you view your home from ground level, The Roof Guys are ready to help you with a professional roof inspection and the needed repairs to ensure your home is properly protected from Florida’s weather, helping you avoid significant problems in the future. 

If the damage to your roof is extensive, the trustworthy professionals at The Roof Guys can guide you in the best course of action to take for the long term. At The Roof Guys, you can expect the highest quality materials and service to ensure your roof provides the best protection for your home and family. Contact us today for a free roof replacement estimate!


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