Building Science Corporation Attic Air Sealing

Require air sealing and air barriers including attic hatches flues piping lighting wiring chases attic eaves dropped ceilings and knee walls.

Building science corporation attic air sealing.

The only place air should be able to leave the supply duct system and the furnace or air handling unit is at the supply registers. Tenwolde and carll 1992 also observed that during summer attic vents provide some cooling but with sufficient ceiling insulation the effect on cooling loads should be minor. Attic air sealing guide. Department of energy s building america program.

Building science corporation. Guide to attic air sealing joseph lstiburek. The guide to attic duct sealing. Understanding and resolving ice dams.

Neither the united states government nor any agency thereof nor any of their employees. Other guides for air sealing are available. Building science corporation guide 7 pages. Ductwork furnaces and air handlers should be sealed against air leakage.

What s wrong with this practice. Building science corporation guide 47 pages. A building science consulting and full service architecture firm specializing in building technology for all types of buildings including commercial institutional and residential. In hot climates the primary purpose of attic ventilation is to expel solar heated hot air from the attic to lessen the building cooling load.

Air seal the attic once the issues identified above have been addressed proceed to develop the attic air sealing work plan. Building science corporation may 15 2014 typical penetrations through the primary components of the air barrier system include plumbing pipes and vents electrical wires and conduits electrical fixtures other mechanical services and in some cases structural members. This assessment is adapted from the measure guideline report guide to attic air sealing prepared by building science corporation for the u s. Attic air sealing guide and details.

Building science corporation guide 2 pages. The attic air sealing details section provides a scope of work and specification for the air sealing of many points of air leakage in common attic spaces. A sample work plan can be found in appendix a. Air leakage that is.

The following sections provide greater detail on these conditions. Building science corporation building technologies program recognizing top innovations in building science. Retrofit of blown attic insulation in existing hud code manufactured homes needs. Spray foam under roof sheathing.