In the Entrance Exam 2, which trade focuses on insulating buildings?

The trade that focuses specifically on insulating buildings is indeed the insulator. Insulators are skilled professionals who specialize in the installation of thermal and sound insulation materials in residential, commercial, and industrial settings. They work with various insulation materials, such as fiberglass, foam, and cellulose, to ensure that buildings maintain energy efficiency, reduce heat loss, and improve acoustic performance.

Insulators play a critical role in the overall energy efficiency of a structure, contributing to comfort and cost savings on heating and cooling bills. They must understand building codes, insulation types, and proper installation techniques to effectively perform their duties.

The other trades listed—carpentry, welding, and plumbing—focus on different aspects of construction and maintenance. Carpenters work primarily with wood and framing structures, welders focus on joining metal components, and plumbers address piping systems for water, waste, and gas. While these trades may involve aspects of building construction, they do not primarily concentrate on insulation as a main area of expertise.