Building Science Corporation Attic Air Sealing

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.

Building science corporation attic air sealing.

Air seal the attic once the issues identified above have been addressed proceed to develop the attic air sealing work plan. The guide to attic air sealing provides information and specifications to the following groups. Building science corporation building technologies program recognizing top innovations in building science. What s wrong with this practice.

Building science corporation guide 2 pages. Guide to attic air sealing joseph lstiburek. Ductwork furnaces and air handlers should be sealed against air leakage. Department of energy s building america program.

Understanding and resolving ice dams. The guide to attic duct sealing. 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 and details.

Neither the united states government nor any agency thereof nor any of their employees. Building science corporation. Require air sealing and air barriers including attic hatches flues piping lighting wiring chases attic eaves dropped ceilings and knee walls. Attic air sealing guide.

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. The following sections provide greater detail on these conditions. Retrofit of blown attic insulation in existing hud code manufactured homes needs. This assessment is adapted from the measure guideline report guide to attic air sealing prepared by building science corporation for the u s.

Building science corporation guide 47 pages. A sample work plan can be found in appendix a. 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. Air sealing details for most common attic situations are provided in this guide on page 15.

Building science corporation guide 7 pages. Other guides for air sealing are available. Spray foam under roof sheathing. 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.