Product Data Sheet (PDF)

Approvals and Testing

Tested in accordance with ICC-ES AC 38 criteria to meet IBC and IRC requirements for Weather Resistive Barriers.

Roll Length   102 ft. (31.1 m)
Roll Width   59 in. (1.5 m)
Nominal Thickness Calibrated Deadweight Micrometer 18.9 mil (0.480 mm)
Basis Weight Electronic Weigh Scale 11.0 oz/sq.yd without release paper
Roll Weight   54 lbs (24.5 kg)
Application Temperature   20°F (-6° C) and rising
Service Temperature   -40° to 250°F (-40° to 121°C)
Water Resistance AATCC 127 PASS (22 in. head of water >5 hrs)
Air Permeance of Building Materials ASTM E2178 PASS
0.0000 cfm/ft2 @1.57 psf
0.0001 L/s/m2 @75Pa
Air Barrier Assembly ASTM E2357 PASS
0.002 cfm/ft2 @ 1.57 psf
0.01 L/s/m2 @ 75Pa
Water Vapor Transmission (WVT) ASTM E398 (73.4°F 23°C 50%RH) Standard Test Method for Water Vapor Transmission Rate of Sheet Materials Using Dynamic Relative Humidity Measurement 453.45 g/m2•24hr (65.48 Perm)
Water Vapor Transmission/Permeance ASTM E96 B (68.4°F 20.2°C 51.2%RH) Standard Test Methods for Water Vapor Transmission of Materials (wet method)
15.1074 g/hr•m2  (63.481 Perm)
362 g/ 24 hr•m2
Peel Adhesion ASTM D 3330 0.45 N (2.6 lbf/in)
Breaking Strength/Elongation ASTM D5034  MD – 119 lbf (529 N) 
CD – 96 lbf (427 N) 
UV Stability AC38, Section 4.1.2 PASS, UV Stable
Flame Spread ASTM E84 0 - Class A, PASS
Smoke Developed Index ASTM E84 75 - Class A, PASS
NFPA 285 Assembly Fire Test Contact VaproShield Technical Team 1-866-731-7663 opt. 5

ASTM E 96 - Method B (wet cup method) typically gives a more realistic result for permeance for highly permeable products than does the Method A (dry cup/desiccant method).

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