Attic Ventilation Fans Description Guide describing the use of attic ventilation fans to mechanically pull outside air through the attic in an attempt to cool the attic, control moisture, and prevent ice dams.
Unvented Conditioned Attic with Spray Foam Insulation Below Roof Deck Description Guide describing a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.
Vented versus Unvented Attic Description Guide describing options for designing and locating the thermal boundary at either the attic floor or along the roof line in new and existing homes.