Cathedralized attic

Cathedralized attic

An unvented attic with insulation installed between the rafters or above the roof sheathing. Moving the insulation from the attic floor to the roof plane turns the attic into conditioned or semiconditioned space; this is especially beneficial in homes with attic ductwork. Usually refers to an attic that does not include finished space.
References in periodicals archive ?
The twin lab homes offered a unique opportunity for the direct comparison of nearly identical homes except for House 1(H1) having a vented attic, and House 2(H2) having an unvented attic assembly (also known as sealed cathedralized attic with spray foam insulation under the roof sheathing).