Flex MF/R 80 PVC User Manual
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Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533
Tel: (610) 916-9800 Fax: (610) 916-9801 www.FlexRoofingSystems.com
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PHYSICAL PROPERTIES
Property
Test Procedure
Specification
Color
White, Gray, Tan
Thickness
ASTM D751
.080” nominal
Roll Size
60” x 65’
78” x 65’
120” x 65’
Weight
8.6 oz./ft²
Breaking Strength
ASTM D751 256 x 242
(minimum, lbf/in.)
Seam Strength
ASTM D751
297 lbf
Elongation @ Break
ASTM D751
57% x 54%
Heat Aging
ASTM D3045
>90%
Tear Strength min. lbf.
ASTM D751
99 x 70
Low Temperature Bend
ASTM D2136
PASS (-40ºF)
Static Puncture Resistance
ASTM D5602 PASS @ 33 lbs.
Dynamic Puncture Resistance
ASTM D5635
PASS @ 20 J
Dimensional Change
ASTM D-1204
0.25%
(maximum %)
(@ 176º F, 6 hours)
Water Immersion
ASTM D-570
1.96%
Accelerated Weathering
ASTM G-155
PASS
Solar Reflectivity
ASTM C1549 .82 (white)
Emissivity
ASTM C1371
.91 (white)
SRI
ASTM E1980
109
Flex MF/R PVC membrane is thermoplastic in nature and exceeds the requirements of ASTM D4434
standard specification for poly (vinyl chloride) sheet roofing.
WARRANTY
The Flex MF/R 80 PVC Roofing Membrane may receive the manufacturer's standard five (5) year, ten
(10) year, fifteen (15) year, twenty (20) year, twenty-five (25) year or thirty (30) year guarantee of
watertightness.