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THE CITY OF SUNNY ISLES BEACH <br />PROJECT NO. 21-1011 <br />BUILDING DEPARTMENT RELOCATION TO ANNEX <br /> <br />Project No. 21-1011 November 2024 072700 Thermal and Air Barrier Wall <br />System-2 <br />a) ASTM C518, 140degreeF/90day Aged R-Value (measured at <br />75degree F Mean Temp.); for product with a minimum 60-degree <br />F ambient and substrate application temperature is R6.1/inch. <br />b) Core density: ASTM D1622, Minimum 2.0 pcf. <br /> <br />2. Air barrier performance: When tested in accordance with ASTM E2357, at a test <br />pressure of not less than 6.24 psf, air infiltration shall not exceed 0.04 cfm per <br />square foot of fixed wall area. <br /> <br />3. Testing should be conducted at positive and negative sustained wind loading of <br />12.5psf for one-hour duration in each direction, pressure cycling of the wall at <br />2000 cycles in both the positive and negative direction, ending with wind gust <br />loading at 25psf. <br /> <br />4. Water penetration: When tested in accordance with ASTM E331, no uncontrolled <br />water penetration shall occur at a minimum differential pressure of 6.24 psf for <br />minimum test duration of 2hrs. <br /> <br />5. Mold resistance: Thermal wall and air barrier system components shall provide <br />non-food source for fungal growth. <br /> <br />C. Code Compliance: Exterior wall system and component materials shall comply with the <br />following requirements: <br /> <br />1. Exterior Insulation: <br /> <br />a. Class 1 (<and/or= 25 Flame Spread Index and < 450 Smoke Developed <br />Index) classified at Max. thickness per UL 723 criteria or ASTM E84 <br />criteria. <br />b. Fire Performance Evaluation as a component of an NFPA 285 approved <br />wall assembly per the requirements of the Pennsylvania Uniform <br />Construction Code. <br /> <br />2. Spray Polyurethane Foam: <br /> <br />a. Class 1 (<and/or= 25 Flame Spread Index and < 450 Smoke Developed <br />Index) classified at Max. thickness per UL 723 criteria or ASTM E84 <br />criteria. <br />b. Fire Performance Evaluation as a component of an NFPA 285 approved <br />wall assembly per the requirements of the Pennsylvania Uniform <br />Construction Code <br /> <br />3. System complies with ASTM E2357: Test Method for determining Air <br />Leakage of Air Barrier Assemblies. <br /> <br />4. System complies with NFPA 285: Standard method of Testing for the Evaluation <br />of Flammability Characteristics of Exterior Non-Load Bearing Wall Assemblies <br />containing Combustible components using the Intermediate Scale, Multi-Story <br />Test Apparatus. <br /> <br />D. Fire Resistance: <br /> <br />1. System complies with NFPA 285: Standard Method of Test for the Evaluation