TABLE I. Performance requirements.
Characteristics
Class 1
Class 2
Class 3
Test
Requirements
Requirements
Requirements
Paragraph
Reference
Seam Strength
4.6.1
1. As received material sealed & tested:
No separation
No separation
No separation
a. At room temperature (separation-inches)
b. At 100°F and at 160°F (separation-inches)
¼ (max)
¼ (max)
¼ (max)
2. Sealed before aging at
160°F for 12 days and
tested:
No separation
No separation
No separation
a. At room temperature (separation-inches)
b. At 100°F and at 160°F (separation-inches)
¼ (max)
¼ (max)
¼ (max)
3. Sealed after aging at 160°F for 12 days and
tested:
No separation
No separation
No separation
a. At room temperature (separation-inches)
b. At 100°F and at 160°F (separation-inches)
¼ (max)
¼ (max)
¼ (max)
Seam fabrication
No leakage at
Not required
No leakage at
4.6.2
double seam
double seam
junction
junction
Water vapor transmission rate (WVTR)
1. After room temperature flexing:
4.6.1
0.02 (max)
0.02 (max)
0.02 (max)
a. As received (gms/100 sq. in./24 hrs.)
0.02 (max)
0.02 (max)
0.02 (max)
b. Aged (gms/100 sq. in./24 hrs.)
2. WVTR after low temperature flexing:
0.03 (max)
Not required
0.03 (max)
As received (gms/100 sq. in./24 hrs.)
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