Everyone loves asphalt shingles. Whether it’s architectural asphalt shingles for the added durability and aesthetic or plain asphalt shingles, they’re always great value for money.
However, like any roofing material, they are not immune to damage – namely cracking. Once they crack, the damage becomes worse as the seasons pass. Here are several reasons why this happens.
1. Age and Weathering
Over time, exposure to sunlight, rain and fluctuating temperatures can cause asphalt shingles to become brittle and prone to cracking. As shingles age, the asphalt can dry out and lose its flexibility that it cannot sustain its structure when stepped on or during windy storms.
2. Poor Installation
If shingles are not properly installed, they may be more likely to crack or become damaged. For example, if shingles are nailed too tightly or too high, they may not have enough room to expand and contract with temperature changes. Manufacturers have a set of guidelines to ensure this doesn’t happen – and most often they certify local roofers who can do this effectively and consistently.
3. Impact Damage
Impact damage from falling branches or hail causes asphalt shingles to crack. Even small cracks can compromise the integrity of the shingle and lead to leaks and other issues. Some of these damage are quite small or even invisible when viewed from anywhere else, so it’s always essential to inspect your roof regularly for signs of impact damage and address any issues promptly.
4. Foot Traffic
Walking on your roof can also cause asphalt shingles to crack, especially if the roof is older or in poor condition. While it’s generally not advisable to walk on your roof unless necessary, if you must do so, take care to walk on the roof’s sturdy parts and avoid stepping on the shingles as much as possible. We strongly advise you hire a reliable roofer to do this for you as they’re well-trained to navigate roofs as much as service them.
5. Improper Ventilation
Poor ventilation can lead to heat buildup in the attic, which can cause the shingles to become excessively hot and brittle, increasing the likelihood of cracking. As a side note, cracking occurs because the asphalt shingles expand, let moisture in, and the summer heat and attic temperatures cause the moisture to evaporate.
6. Manufacturing Defects
In some cases, asphalt shingle cracking may be due to manufacturing defects. While rare, defects in the manufacturing process can cause shingles to be more prone to cracking or other issues. If you suspect that your shingles may have a manufacturing defect, contact the manufacturer for further assistance.
Need a reliable roofer for your next project? You can always count on us at Howard Roofing & Construction, a veteran and family-owned roofing company you can trust in Wilmington, NC. Call us today or visit our website to get your project started!