The Contractor shall ensure that the intent of constructing the building enclosure with a continuous air barrier system to control air leakage into, or out of, the conditioned and tempered spaces is achieved. The air barrier system shall have the following characteristics: a. It must be continuous, with all joints sealed. b. It must be structurally supported to withstand positive and negative air pressures applied to the building enclosure. c. Continuity shall be made between: 1) Foundation and walls. 2) Walls and windows or doors. 3) Different wall systems. 4) Wall and roof / wall and underside of deck. 5) Wall and roof or ceiling / floor assemblies between conditioned and unconditioned spaces, and between conditioned and tempered spaces. 6) Wall, floor and roof across construction joints, control joints, and expansion joints. 7) Walls, floors and roof to structural, utility, pipe, duct, and other mechanical / electrical penetrations through construction assemblies. 8) Other joints and penetrations affecting air tightness of the construction assembly...
