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Attic Air Sealing, Insulating, and Ventilating for Ice Dam Prevention

Information guide describing proper attic air-sealing, insulation, and ventilation to combat ice dam formation on roofs in cold climate zones.

Reexamining Roof Ventilation

Author(s)

Woods Tony

Organization(s)

Home Energy,

National Association for State Community Services Programs,

NASCSP

Publication Date

November, 2000

Article describing moisture and ice dam issues in attics and how to air seal the attic floor.

Blown Insulation for Existing Vented Attic

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

Unvented Attic Insulation

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

Batt Insulation for Existing Vented Attics

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

Attic Radiant Barriers

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

Attic Eave Minimum Insulation

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

Vented and Sealed Attics in Hot Climates, RR-0981

Author(s)

Rudd Armin,

Lstiburek Joseph W

Organization(s)

Building Science Corporation,

BSC

Publication Date

September, 1998

Building science report describing issues with vented attics in hot-humid climates and how sealed attic construction may be a solution.

Spray Foam Insulation Applied to Existing Attic Floor

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

Buried Ducts within Ceiling Insulation of Vented Attics in all Climate Zones - Code Compliance Brief

Publication Date

January, 2020

The intent of this brief is to provide code-related information about buried ducts in vented attics to help ensure that the measure will be accepted as being in compliance with the code. Providing notes for code officials on how to plan review and conduct field inspections can help provide jurisdictional officials with information for acceptance. Providing the same information to all builders, designers, and others is expected to result in increased compliance and fewer innovations being questioned at the time of plan review and/or field inspection.

Below Deck Spray Foam Insulation for Existing Roofs

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.

Roof Venting in a Wet Climate

Author(s)

Fisette Paul

Organization(s)

Journal of Light Construction,

JLC

Publication Date

February, 2011

Q&A article discussing how to address moisture issues in an attic in a wet and humid coastal climate.

Avoiding Moisture Problems

Author(s)

Van der Meer Bill

Organization(s)

National Association for State Community Services Programs,

NASCSP,

Weatherization Training Center at Penn College,

Pennsylvania College of Technology,

PCT

Publication Date

February, 2003

Technical article describing issues and moisture concerns related to weatherization efforts.

Wind Washing

Guide describing wind washing and how to prevent it.

Water Managed Roof – Re-roofing and Adding Insulation Over a Sloped Roof

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

Support at Intervals for Flex Ducts

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.

Building Cavities Not Used as Supply or Return Ducts

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