Evaluated Materials


Johns Manville
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Sprayed Polyurethane Foam (Medium Density Closed Cell)
Product: Corbond III
Air Barrier Testing Results
Property
Air Barrier Assembly
Material Air Permenance
Test Methods
Air Leakage Rate of Wall Assembly (ASTM E2357)
Air Leakage Rate of Material (ASTM E2178)
Results
0.0915 L/(s • m2) @ 75 Pa
0.0183 cfm /ft2 @ 1.57 psf
0.000244 L/(s • m2) @ 75 Pa
0.000049 cfm /ft2 @ 1.57 psf
Material Thickness
@ 37mm (1.5")
@ 50mm (2.0")
Water Vapor Transmittence Testing Results
Property
Water Vapor Permeance (ASTM E96 – desiccant method)
Water Vapor Permeance (ASTM E96 – water method)
Test Methods
ASTM E96 Standard Test Methods for Water Vapor Transmission of Materials
ASTM E96 Standard Test Methods for Water Vapor Transmission of Materials
Metric
53 ng / Pa•s•m2
120 ng / Pa•s•m2
Imperial
0.927 US Perms
2.0 US Perms
Material Thickness
@ 50mm (2.0")
@ 25mm (1.0")
Boardstock – Rigid Cellular Thermal Insulation Board
Product: AP Foil-Faced
Air Barrier Testing Results
Property
Air Barrier Assembly
Material Air Permenance
Test Methods
Air Leakage Rate of Wall Assembly (ASTM E2357)
Air Leakage Rate of Material (ASTM E2178)
Results
0.0064 L/(s • m2) @ 75 Pa
0.00128 cfm /ft2 @ 1.57 psf
0.0007 L/(s • m2) @ 75 Pa
0.00013 cfm /ft2 @ 1.57 psf
Material Thickness
@ 1.0" (25mm) thick foam sheathing
@ 1.0" (25mm) thick foam sheathing
Water Vapor Transmittence Testing Results
Property
Water Vapor Permeance (ASTM E96 – desiccant method)
Water Vapor Permeance (ASTM E96 – water method)
Test Methods
ASTM E96 Standard Test Methods for Water Vapor Transmission of Materials
ASTM E96 Standard Test Methods for Water Vapor Transmission of Materials
Metric
3 ng / Pa•s•m2
Imperial
0.06 US Perms
Material Thickness
@ 1.0" (25mm) thick foam sheathing