Asphalt shingles undergo changes in their physical properties when they experience a loss of volatiles, which are the volatile organic compounds that help to maintain the shingles' flexibility and moisture resistance. When these volatiles evaporate, the shingles lose essential oils that contribute to their structure and function.
As a result of this loss, the asphalt shingles become less durable, meaning they are more prone to damage from various environmental factors such as UV exposure, temperature fluctuations, and physical wear. The shingles also become more absorbent, as the loss of volatiles results in a drier, more brittle material that may easily crack or absorb water, leading to further deterioration over time.
This process highlights the importance of maintaining the integrity of asphalt shingles to ensure they perform effectively over their intended lifespan. Understanding the effects of volatile loss helps homeowners and inspectors recognize potential issues with roofing materials and take preventative actions as necessary.