What type of materials must be used to properly cope parapet walls?

Coping on parapet walls serves both functional and protective purposes, making the materials used vital for the integrity and longevity of the structure. The correct response emphasizes the necessity of using materials that are both noncombustible and weatherproof.

Noncombustible materials are crucial in preventing fire hazards, especially on buildings where the parapet might be exposed to flame or high heat. This characteristic helps to ensure that the parapet will not contribute to the spread of fire, thereby enhancing the overall safety of the building.

Weatherproofing is equally important as it protects the underlying structure from weather-related damage. Parapet walls are exposed to rain, snow, wind, and various environmental conditions. Using weatherproof materials minimizes the risk of water intrusion, which can lead to structural deterioration, mold growth, and other issues.

Selecting materials that combine both properties ensures that the parapet walls remain secure, safe, and functional over time, effectively fulfilling their role in water drainage and fire safety in a commercial structure. This approach to building materials not only adheres to safety codes but also promotes the longevity of the structure.