Which form of fiberglass insulation is typically pre-manufactured and used as lightweight sheets for various installations?

• A. Wrap
• B. Pre form
• C. Board
• D. Batt insulation

Answer: (B)

Fiberglass insulation comes in several forms to fit different installation needs. The form that is pre-manufactured as lightweight sheets is produced as ready-to-use panels that can be cut to size and installed like sheets across cavities or irregular spaces. This pre-formed sheet form offers uniform density and easy handling, making it ideal for applications where a flat, light-weight sheet is preferred over bulky batts or rigid boards. Wraps are typically barriers rather than insulation, boards are rigid panels, and batt insulation refers to flexible blankets or rolls, not pre-made sheets. So the pre-formed sheet form best matches being pre-manufactured and used as lightweight sheets.