In what way can high humidity affect asphalt roofing materials?

High humidity can significantly reduce the lifespan of asphalt roofing materials. This occurs because prolonged exposure to moisture can lead to accelerated deterioration of the roofing materials. Humidity can cause the asphalt to soften, which compromises its structural integrity and can result in issues like warping and the formation of blisters on the roof surface. Additionally, excessive moisture can promote mold and mildew growth, further damaging the roofing and potentially leading to leaks.

In contrast, the other options do not accurately reflect the impact of high humidity: elasticity may be affected but not necessarily improved; color enhancement does not occur as a direct result of humidity; and the weight of asphalt roofing is not increased due to humidity alone. Thus, understanding the effect of humidity on roofing materials is critical for assessing durability and maintenance needs in residential properties.