Evaluated Materials


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Sprayed Polyurethane Foam (Medium Density Closed Cell)
Product: WALLTITE® LWP
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
< 0.001 L/(s • m2) @ 75 Pa
0.0002 cfm /ft2 @ 1.57 psf
0.002 L/(s • m2) @ 75 Pa
0.0004 cfm /ft2 @ 1.57 psf
Material Thickness
@ 25mm (1.0")
@ 25mm (1.0")
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
76.69ng / Pa•s•m2
93.73 ng / Pa•s•m2
Imperial
1.34 US Perms
1.64 US Perms
Material Thickness
@ 50mm (2.0")
@ 50mm (2.0")
Product: Walltite
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
0.0076 L/(s • m2) @ 75 Pa
0.0015 cfm /ft2 @ 1.57 psf
0.00032 L/(s • m2) @ 75 Pa
0.000064 cfm /ft2 @ 1.57 psf
Material Thickness
@ 25mm (1.0")
@ 32mm (1.3")
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
79.6 ng / Pa•s•m2
241 ng / Pa•s•m2
Imperial
1.39 US Perms
4.22 US Perms
Material Thickness
@ 25mm (1.0")
@ 25mm (1.0")