Are your asphalt roofing shingles looking strange? It may not be your imagination. Buckling in asphalt roofing shingles refers to the upward distortion or warping of the shingle surface, causing a visible wave or bulge. It can compromise the appearance and functionality of the roof, potentially leading to water infiltration and other issues. Several factors can contribute to shingle buckling, and preventive measures can help minimize the risk.

Causes of Shingle Buckling

Knowing the causes of shingle buckling might prevent future problems.

Improper Installation: One of the primary causes of shingle buckling is improper installation. If the shingles are not correctly aligned, nailed, or fastened according to the manufacturer's guidelines, they may not lie flat and can buckle over time. Common installation errors include using incorrect nail placement, insufficient fasteners, or improper alignment of shingle courses.

Inadequate Ventilation: Poor attic ventilation can lead to excessive heat and moisture buildup in the attic space, which can affect the shingles' performance. Heat trapped in the attic can cause the shingles to expand and contract unevenly, leading to buckling. Insufficient ventilation can also contribute to excessive moisture, which can weaken the shingles and result in buckling or warping.

Thermal Cycling: Asphalt shingles are subject to thermal cycling, which refers to daily and seasonal temperature fluctuations. These temperature changes cause the shingles to expand and contract. If the shingles are unable to accommodate these movements due to factors like poor ventilation or inadequate fastening, it can lead to buckling.

Excessive Roofing Layers: Installing new shingles over existing layers without proper preparation and assessment can lead to buckling. Excessive layers can add extra weight and stress to the roof structure, causing the shingles to buckle or distort. Although it's less expensive and quicker to add a layer of shingles, this practice can contribute greatly to roofing shingles buckling.

Moisture Intrusion: Moisture infiltration through leaks or inadequate flashing can impact the integrity of the roof system, including the shingles. When moisture reaches the underside of the shingles, it can cause them to warp or buckle as they lose their flat position. Roofs should be inspected often to prevent a small leak from causing a lot of damage to the shingles and more.

By taking preventive measures during installation, ensuring proper ventilation, conducting regular maintenance, and addressing any issues promptly, you can help prevent shingles from buckling.

For more info, contact a local company like Custom Craft Roofing & Construction, LLC.

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