Flex FB 50 PVC - Manual (Page 2)

Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533
Tel: (610) 916-9500 Fax: (610) 916-9501 www.FlexRoofingSystems.com
Page 2
APPROVALS
The Flex FB 50 PVC Roofing Membrane exceeds the requirements of ASTM D4434 standard for
thermoplastic sheet roofing. The Flex FB 50 PVC Roofing Membranes meet a wide range of Factory
Mutual's wind uplift requirements up to a FM Class 1-735 when installed on a Structural Concrete Deck.
The FB 50 PVC Roofing Membrane can also be assembled in a variety of adhered and mechanically
attached roof applications that meet Underwriters Laboratories Class A fire rating.
FLEX FB 50 PVC ... RELIABLE, TIME TESTED ROOF SYSTEM
The ease of the Flex FB 50 PVC Membrane one-step installation process provides overall time and labor
savings advantages as well as the superior performance and durability of PVC (polyvinyl chloride) which
can withstand the harshest of climates and the most punishing UV and aging tests available. The Flex FB
50 PVC Membrane seams are hot air welded which are as strong as the membrane itself and creates a
quality watertight seal that will not break down over time. The fleece backing ensures added protection in
those areas where there is excessive foot traffic. Overall, the Flex FB 50 PVC Roofing Membrane is the
roof of choice when you need a dependable and reliable roof system which will out perform all
requirements and expectations.
PHYSICAL PROPERTIES
Property Test Procedure Specification
Color white, tan or gray
Thickness ASTM D751 .050”
Breaking Strength (lbf) ASTM D751 256 x 242
Tear Strength (lbf) ASTM D751 99x70
Seam Strength (lbf) ASTM D751 297
Elongation ASTM D751 57% x 54%
Static Puncture Resistance ASTM D5602 Pass
Dynamic Puncture Resistance ASTM D5635 Pass
Heat Aging ASTM D3045 >90%
Low Temperature Bend ASTM D2136 -40
°F
Water Absorption ASTM D570 1.5%max
Linear Dimensional Change ASTM D1204 0.25%
Accelerated Weathering ASTM G155 Pass
Solar Reflectivity ASTM C1549 .82 (white)
Emissivity ASTM C1371 .91 (white)
SRI ASTM E1980 109
Flex FB PVC membrane is thermoplastic in nature and exceeds the requirements of ASTM D4434
standard specification for poly (vinyl chloride) sheet roofing.
WARRANTY
The Flex FB 50 PVC Roofing Membrane may receive the manufacturer's standard five (5) year, ten (10)
year or fifteen (15) year guarantee of watertightness.