Guides A-Z

Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.

Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.

Guide describing design and installation of compact duct systems for central heating and cooling systems.

This guides describes buried ducts in loose-fill attic insulation, a method that can only be used in dry climates.

Guide describing how to apply spray foam insulation to ceilings in existing homes.

Guide describing methods for insulating an unvented attic along the roof line.

Guide describing a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.

Guide describing how to re-roof an existing home with a sloped and add insulation above the roof deck.

Guide describing the types of whole-house fans, installation details to reduce energy loss, and how to operate them for comfort and energy savings based on climate zone.

Guide describing wind washing and how to prevent it.