Batt Insulation for Existing Vented Attics Description Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.
Dropped Ceiling/Soffit Below Unconditioned Attic Description Guide describing how to insulate and air seal dropped ceilings and soffits to prevent air leakage.
Roof/Attic to Exterior Wall Air Control Upgrade Description Guide outlining how to retrofit an exterior wall and/or attic to provide continuous air sealing.