Below Deck Spray Foam Insulation for Existing Roofs Description Guide describing how to add spray foam insulation to the underside of the existing roof deck as part of the conversion of a vented attic to an unvented, insulated attic.
Building Science Introduction - Air Flow Description Information guide providing background information about air flow in residential buildings.
Whole House Ventilation Strategies for Existing Homes Description Guide describing how to select and install whole-house ventilation systems for existing homes.