Guides A-Z

This guide describes IECC 2009 and 2012 and ENERGY STAR Certified Homes insulation requirements.

This guide describes IECC 2015 and DOE Zero Energy Ready Home insulation requirements.

Guide providing guidance on insulating attic eaves in new and existing single-family homes and multifamily buildings.

Guide describing application of a radiant barrier layer in the attic to block radiant heat transfer between hot surfaces and heat-absorbing surfaces.

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 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.

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

Guide describing the use of building cavities as supply or return ducts.

Guide describing vapor retarder permeability, insulation interaction, and example construction in a hot-humid climate.

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

Guide describing how ice dams form and how roofs can be constructed to prevent them.

Guide describing buried ducts in loose-fill attic insulation, a method that can only be used in dry climates.

Guide describing approaches to burying and encapsulating ducts in unconditioned attics to increase the overall R-value of duct insulation.

Guide describing how to install slab edge insulation when retrofitting existing slab-on-grade foundations.

Guide describing how to air-seal and insulate the floor above an unconditioned basement or crawl space.

Vapor retarder plastic should not be installed over fibrous insulation on basement or crawlspace walls unless rigid foam or spray foam is installed directly against the concrete, behind the blanket insulation.

No outdoor air intakes connected to return side of the HVAC system, unless controls are installed to operate intermittently & automatically based on a timer and to restrict intake when not in use (e.g., motorized damper)

Guide describing how to apply heavy membranes at eaves in cold climates to help guard against ice dams.

Guide describing how to insulate slabs on grade in climate zones 3 and higher.

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

Guide describing how to hang ducts with supporting straps or saddles to adequately support ducts so they do not sag and are not pinched or compressed in a manner that would cause damage to the ducts, the duct insulation, or the duct air barrier covering.

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

Guide describing how to install ventilation air inlets in open locations at a safe distance from potential air contamination sources.

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

Guide providing information about treating bulk water drainage issues and moisture control measures in existing basements and crawl spaces.