Fiberglass shingles offer more resistance to which two conditions compared to organic shingles?

Fiberglass shingles are designed with a mat made of glass fibers that are combined with asphalt, which gives them certain performance advantages compared to organic shingles, particularly concerning heat and humidity.

When it comes to heat, fiberglass shingles are less likely to degrade in high temperatures, maintaining their integrity and color over time. This resistance to heat ensures they remain effective in warmer climates where roofs can experience extreme temperatures, thus providing better longevity and performance.

In terms of humidity, fiberglass shingles have a lower absorption rate compared to organic shingles, which often contain felt made from organic materials that can absorb moisture. This moisture absorption can lead to mold and deterioration in organic shingles over time, while the fiberglass components remain stable.

Overall, these properties make fiberglass shingles a more durable choice in environments with high heat and humidity, ensuring better performance and a longer useful life for roofing applications in such conditions.