What are the two types of asphalt impregnated mats used in asphalt shingles?

The two types of asphalt impregnated mats used in asphalt shingles are cellulose material and fiberglass. Cellulose is often derived from recycled paper products and provides a sturdy and cost-effective base for shingles. It offers good performance in terms of flexibility and tear resistance, making it suitable for various roofing applications.

Fiberglass mats, on the other hand, are composed of strands of glass fibers and offer enhanced strength and resistance to moisture. This type of mat provides significant advantages, such as improved durability and fire resistance, compared to traditional cellulose mats.

Together, these materials create a reliable foundation for asphalt shingles, ensuring they can withstand environmental stresses and provide long-lasting protection to the underlying roof structure. The use of both cellulose and fiberglass caters to different performance requirements and preferences among manufacturers and consumers, leading to a robust variety of asphalt shingles available on the market.