Which statement about BUR and EPDM/TPO is accurate?

Which statement about BUR and EPDM/TPO is accurate?

• A. They are types of roof coatings.
• B. They are two common types of flat roofing materials for residences.
• C. They are drainage systems.
• D. They are components of interior insulation.

Answer: (B)

The main idea is recognizing what BUR and EPDM/TPO are in roofing. BUR stands for built-up roofing, a traditional multi-ply system made with layers of bitumen and reinforcing fabric. EPDM and TPO are single-ply membrane options—EPDM is a synthetic rubber membrane, while TPO is a thermoplastic membrane. Both are commonly used for flat or low-slope roofs and are suitable for residential applications, making the statement that they are two common flat roofing material types for residences accurate. They are not roof coatings, drainage systems, or components of interior insulation, which have different functions in a roof system.

The main idea is recognizing what BUR and EPDM/TPO are in roofing. BUR stands for built-up roofing, a traditional multi-ply system made with layers of bitumen and reinforcing fabric. EPDM and TPO are single-ply membrane options—EPDM is a synthetic rubber membrane, while TPO is a thermoplastic membrane. Both are commonly used for flat or low-slope roofs and are suitable for residential applications, making the statement that they are two common flat roofing material types for residences accurate. They are not roof coatings, drainage systems, or components of interior insulation, which have different functions in a roof system.