What is the purpose of using a face shield when working overhead?

Using a face shield when working overhead is primarily intended to block debris. When performing tasks above head level, materials like dust, metal shavings, or other debris can fall unexpectedly and pose a risk of injury. Face shields provide a transparent barrier that protects the face, including the eyes, from potential harm caused by these falling objects. This protective gear is particularly crucial in environments like construction sites or during specific HVAC sheet metal tasks where overhead work is common, ensuring that safety is maintained while performing necessary duties.

While protecting the face from heat and improving visibility are important considerations in other contexts, they do not specifically address the primary function of a face shield in relation to overhead tasks. Ears are typically protected using different types of personal protective equipment such as earmuffs or earplugs, rather than face shields.