What is the primary use of blanket insulation?

Blanket insulation is primarily designed for use in walls and attics due to its ability to provide thermal resistance and efficiency in these areas. This type of insulation typically comes in rolls or batts, making it convenient to install between studs and rafters, which are common in walls and attics. By fitting snugly in these spaces, blanket insulation effectively reduces heat transfer, helping to maintain a stable indoor temperature and improving energy efficiency.

While radiant barriers, fire barriers, and exterior insulating materials have their specific applications, they do not encapsulate the primary purpose of blanket insulation as effectively as its use in walls and attics. Radiant barriers deal specifically with reflecting heat rather than insulating, fire barriers focus on slowing the spread of flames, and exterior insulating materials often emphasize weather resistance. Therefore, the best representation of where blanket insulation is most commonly utilized and performs its primary function is indeed in walls and attics.