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Roofing Materials

A Comparative Guide: Fiberglass vs Asphalt Shingles

In Arizona, the roofing material you choose plays a pivotal role in protecting your home from the region’s harsh climate. This guide will explore the differences between fiberglass and asphalt shingles in Phoenix, helping Arizona homeowners make an informed decision on which is best for their wants and needs.

Understanding Fiberglass and Asphalt Shingles

Fiberglass and asphalt shingles are among the most popular roofing materials in Phoenix. While they share similarities, such as an asphalt coating and ceramic granules for durability, their differences in composition influence their performance, especially under Arizona’s scorching sun.

In-Depth Look at Asphalt Shingles

Construction and Composition: Asphalt shingles consist of an organic mat base, usually made from wood products like paper or cellulose, and are coated with a thicker layer of asphalt.


    • Durability: Thanks to their thicker build, they withstand harsh weather better than fiberglass.
    • Longevity: Typically, asphalt shingles can last around 20 years under ideal conditions.


    • Environmental Impact: The higher asphalt content makes them less eco-friendly.
    • Fire Hazard: The organic base is less fire-resistant, which can be a concern in dry climates like Arizona.
    • Susceptibility to Warping: The paper backing can absorb moisture, leading to warping and potential growth of algae, fungus, and mold – though, moisture isn’t a big issue in the desert. Even after heavy rains, the sun tends to dry everything up.

Fiberglass Shingles: A Closer Look

Construction and Composition: Fiberglass shingles feature a base of woven fiberglass strands bonded by resins, topped with a thinner asphalt layer.


    • Weight and Installation: Lighter and easier to install.
    • Eco-Friendliness: Uses less asphalt, reducing environmental impact.
    • Fire Resistance: Class A fire rating makes them ideal for Arizona’s hot climate.


    • Limited Cold Weather Performance: More brittle in cold weather, but this is less of a concern in the Phoenix Valley.

Comparative Analysis: Fiberglass vs. Asphalt Shingles

Asphalt Shingles:

  • Better for varied weather conditions
  • Heavier and more durable
  • Higher environmental impact
  • Prone to moisture-related issues

Fiberglass Shingles:

  • Lighter, eco-friendly, and easier to install
  • Superior fire resistance
  • Ideal for hot, dry climates like Arizona
  • Less suitable for extremely cold or windy conditions

Expert Recommendations for Arizona Homes

In Arizona’s climate, fiberglass shingles offer the most benefits, including superior fire resistance and a lighter environmental footprint. However, for homes in regions with occasional harsh weather such as up north, asphalt shingles may offer better protection.

JBS Roofing: Your Friends in the Roofing Industry

At JBS Roofing, we understand the intricacies of Arizona’s climate and the importance of selecting the right roofing material, especially when choosing between fiberglass or asphalt shingles. Our team of experts is dedicated to guiding you through the process, ensuring your home is well-protected and your roofing investment is sound.

Contact JBS Roofing for personalized advice, quality installation services, and to ensure your home is equipped with the best roofing material for Arizona’s unique climate.


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