Industrial Maintenance Technician Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

Roll roofing primarily consists of a material known as felt, which is a type of asphalt-impregnated paper. This felt is often reinforced with a fiberglass mat to enhance its durability and resistance to tearing. The construction of roll roofing allows for easy installation, making it a popular choice for low-slope roofs and for structures that require a quick and economical roofing solution.

Felt's composition allows it to provide adequate waterproofing and a degree of protection from elements. It is typically supplied in large rolls, which simplifies the installation process compared to individual shingles. This material serves well in various weather conditions when properly applied and maintained.

The other materials mentioned, such as fiberglass and metal, can be used for roofing but do not constitute the primary substance in roll roofing. Shingles, while effective for covering roofs, are individual units rather than a roll and aren’t used in the same manner as roll roofing materials. Thus, felt stands out as the correct answer due to its specific application and characteristics in the context of roll roofing.