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Orange County Architectural Renovations Smith Sinnett / 2023036 <br />Hillsborough, NC Orange County Asset Management Services <br />NON PERMEABLE AIR AND VAPOR BARRIERS 07 27 00 - 1 <br />SECTION 07 27 00 NON PERMEABLE AIR AND VAPOR BARRIERS <br />PART 1 - GENERAL <br />1.1 RELATED DOCUMENTS <br />A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and <br />Division 01 Specification Sections, apply to this Section. <br />1.2 SUMMARY <br />A. This Section includes the following: <br />1. Fluid-applied non permeable air and vapor barrier membrane. <br />2. Self-adhered non permeable air and vapor barrier membrane. <br />B. Related Sections include the following: <br />1. Division 04 Section "Unit Masonry" for embedded flashings. <br />2. Division 09 Section "Gypsum" for wall sheathings, and wall sheathing. <br />3. Division 07 low-slope roofing Sections for roof air barriers. <br />4. Division 07 Section "Thermal Insulation" for insulation. <br />5. Division 07 Section "Sheet Metal Flashing and Trim" for sheet metal flashings. <br />6. Division 07 Section "Joint Sealants" for joint-sealant materials and installation. <br />1.3 REFERENCES <br />A. The following standards are applicable to this section: <br />1. ASTM E2178: Standard Test Method for Air Permeance of Building Materials. <br />2. ASTM E283: Standard Test Method for Determining the Rate of Air Leakage Through Exterior <br />Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen. <br />3. ASTM E330: Standard Test Method for Structural Performance of Exterior Windows, Curtain Walls, <br />and Doors by Uniform Static Air Pressure Difference. <br />4. ASTM E331: Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and <br />Curtain Walls by Uniform Static Air Pressure Difference <br />5. ASTM E96: Water Vapor Transmission of Materials. <br />6. CGSB 37-GP-56M: Membrane, Modified, Bituminous, Prefabricated, and Reinforced. <br />1.4 DEFINITIONS <br />A. ABAA: Air Barrier Association of America. <br />B. Air Barrier Assembly: The collection of air barrier materials and auxiliary materials applied to an opaque wall, <br />including joints and junctions to abutting construction, to control air movement through the wall. <br />1.5 PERFORMANCE REQUIREMENTS <br />A. General: Air barrier shall be capable of performing as a continuous vapor non permeable air barrier and as a <br />liquid-water drainage plane flashed to discharge to the exterior incidental condensation or water penetration. <br />Air barrier assemblies shall be capable of accommodating substrate movement and of sealing substrate <br />expansion and control joints, construction material changes, and transitions at perimeter conditions without <br />deterioration and air leakage exceeding specified limits. <br />Docusign Envelope ID: 52FACC74-DA96-491B-B0B8-04AC3961737D