What is the role of attic kneewalls in terms of insulation and energy efficiency?

Attic kneewalls play a vital role in separating unconditioned attic space from conditioned living areas within a home. By acting as a barrier, they help to minimize the transfer of heat between the cold attic space and the living area below. This separation is crucial for energy efficiency, as it helps maintain the desired indoor temperature, reducing heating and cooling demands and leading to lower energy bills.

Properly insulating kneewalls is essential for minimizing air leakage and preventing heat loss or gain in homes. If the knee walls are not sufficiently insulated, it could result in discomfort for occupants and higher energy costs as the heating or cooling system works harder to compensate for temperature fluctuations.

In contrast, kneewalls do not primarily serve as load-bearing structures, nor are they merely decorative features; their functional purpose directly impacts the energy performance of the home. They are not intended to separate outdoor air from conditioned space in a way that block air intrusion, as this is not their primary role. Hence, the role of the attic kneewalls is best described by their function in separating unconditioned attic space from conditioned living space.