Shingle Cracking and Splitting: What’s the Difference?

Asphalt shingles are prone to cracking and splitting. They can cause leaks if left unattended, forcing roof repair or replacement as a result. Although roof damage may appear to be the same to you, there are differences between shingle cracking and splitting. How?

The roof replacement specialist at  Home Pro Exteriors, Inc. describes the differences between cracking and splitting in this post so that you can make an informed decision about your roof’s future.

What is Splitting?

Temperature variations cause the asphalt shingles to compress and expand, which results in thermal splitting. Because of this, as the temperature rises, asphalt roofing shingles expand and contract. Continuous contraction and expansion place enormous strain on joints, resulting in failure.

Adhesive strips lose their tensile strength when under too much pressure, resulting in cracked shingles. It is possible for your roof to split diagonally or at random, making it vulnerable to leaks. Splitting. Be sure to call a local roofer if you see signs of shingle splitting.

What Is Cracking?

When the volatiles in your asphalt shingles start to evaporate, cracking happens. This occurs naturally and gradually over time, but exposure to the sun’s continual heat might hasten the progression.

Asphalt roof shingles can fracture due to insufficient ventilation in your attic. Cracked shingles on a new roof may indicate that low-quality shingles were used or that your shingles were fitted incorrectly.

 Common Causes of Cracking and Splitting

A roof with cracked or broken shingles is susceptible to rainfall intrusion, requiring roof replacement or repair by your roofing expert sooner rather than later. The two most typical causes of shingle cracking and splitting are as follows:

1.  High winds

Standard asphalt shingle roofs are wind resistant, with features such as strengthening adhesives at the edges. If shingles are not secured, high winds can lift them by the edges. Wind damage is frequently indicated by creases about an inch below the shingle edges when wind lift causes the shingles to fold.

2. Thermal expansion

All substances expand and contract with temperature changes, some more than others. Large areas of several parts — concrete slabs, floor tiles, and roofing shingles, to mention a few – must be installed with spaces between them to accommodate thermal expansion. 

On asphalt shingle roofs, this prevents shingle fragments from pressing against each other, causing cracking. Fortunately, working with an experienced roofer can help minimize thermal expansion cracking or splitting, and workmanship or installation warranties can assist reduce repair costs.           

For your new roof and siding project, contact the experts at Home Pro Exteriors, Inc. Our siding products are sourced from the industry’s top manufacturers and will last for years. For a free professional consultation, call us at (845) 513-6319 or fill out our online contact form. We serve home and business owners in Middletown, NY.