Guide
Description
Guide describing how to insulate and air-seal attic knee walls and floor joist cavities under knee walls.
Guide
Description
Guide describing options for insulating and air sealing at either the attic floor or along the roof line in new homes.
Video
Description
Video describing air sealing and insulation for encapsulated ducts.
Guide
Description
Guide describing wind washing of insulation in the eaves of vented attics and how to prevent it.
Guide
Description
Guide describing how to insulate and air-seal dropped ceilings and soffits to prevent air leakage.
Reference
Description
Report describing sloped roof assemblies with high levels of thermal performance.
Reference
Description
Report on heating and cooling air-distribution ducts that are insulated, installed close to the ceiling in a vented attic and covered with attic insulation to minimize energy loss.
Guide
Description
Guide describing how to air-seal attic access panels, doors, and stairs to provide a continuous air barrier at the ceiling.
Guide
Description
Guide describing method for designing and installing ducts in a raised ceiling chase.
Guide
Description
Guide that illustrates how and when to encapsulate ductwork in unconditioned attics, increasing the R-value of duct insulation, mitigating condensation issues, and reducing air leakage.
Guide
Description
Guide describing causes of condensation in attics and roof assemblies during cold weather and ways to reduce this condensation.
Guide
Description
Guide describing how to correctly air-seal a wall with missing top plates or open wall cavities.
Case Study
Description
Case study showing project and performance data and energy-efficiency measures for a DOE 2017 Housing Innovation Award winning home that was certified to the DOE Zero Energy Ready Home criteria.
Reference
Description
Information sheet with information about insulating and ventilating attics.
Reference
Description
Article describing the building science implications of insulating vented or unvented attics.
Reference
Description
Article describing issues with condensation in unvented attics insulated with open-cell spray foam.
Reference
Description
Article describing the research into insulating vented versus unvented attics.
Case Study
Description
Case study describing new home construction in the hot-humid climate, optimizing thermal enclosure, HVAC, water heating and lighting measures.
Reference
Description
Article describing how insulating and air sealing unfinished attic spaces can lead to reduced energy bills in some homes.
Guide
Description
Guide describing how to air-seal duct and flue shafts.
Guide
Description
Guide describing application of a radiant barrier layer in the attic to block radiant heat transfer between hot surfaces and heat-absorbing surfaces.
Reference
Description
Article describing the importance of air sealing, insulation, and roof ventilation in reducing the likelihood of ice dam formation on roofs in cold snowy climates.
Case Study
Description
Case study describing the elimination of excessive humidity in the attic of a multi-floor, single-family home that was causing condensation and water damage along the roof and eaves.