Flex MF-R 45 PLUS User Manual
FLEX MF/R 45 PLUS ELVALOY® ROOF SYSTEM
(39”, 78”, and 120” Wide, Reinforced, Thermoplastic Roof Membrane)
PRODUCT DESCRIPTION
The Flex MF/R 45 Plus Elvaloy® Roofing Membrane is a high-performance thermoplastic membrane
designed for mechanically attached or adhered roofing applications. The Flex MF/R 45 Plus is produced
with DuPont Elvaloy® KEE and is a polyester reinforced roofing membrane with built in chemical, UV
and fire resistance. The Flex MF/R 45 Plus results in a highly reflective, low maintenance roof surface
that saves the Building Owner energy and labor costs and helps to reduce pollution in the surrounding
environment.
FEATURES AND BENEFITS
· Wider membrane saves in labor costs for installation - less seams to weld.
· Wider membrane saves in material costs - less fasteners and plates.
· Hot air welded seams are the strongest most reliable seams in the roofing industry.
· Chemical, Ozone and UV exposure does not affect surface pliability or functional integrity
· Energy Saving White Reflective Roof Surface is more in demand than ever before.
· Increased cold weather flexibility allows installation in below freezing temperatures.
· Effectively tested to perform in high wind situations - meets or exceeds FM Class 1-90 wind uplift
requirements.
· Approved by Underwriters Laboratories in Class A fire rated roof systems.
MECHANICALLY ATTACHED INSTALLATIONS
The Flex MF/R 45 Plus Elvaloy® Roofing Membrane is ideal for use as a mechanically attached
membrane for new construction and re-roofing. Flex’s MF/R 45 Plus membrane is lightweight, just a few
ounces per square foot, making it ideal for re-roofing projects where a tear off can be avoided. Flex has
several fastener and plate options available to meet a wide range of wind uplift pressure requirements.
The wider Flex MF/R 45 Plus membrane allows for a faster and cost effective installation than other
mechanically attached roof membrane systems.
ADHERED INSTALLATIONS
The Flex MF/R 45 Plus Elvaloy® Roofing Membrane can be installed with Flex Bonding Adhesive for a
fully adhered installation. This system is ideal for installations with unusual or odd shaped contours.
Fully adhered installations are the answer for design limitations on mechanical penetrations of the deck or
for situations where increased wind uplift pressure requirements must be met.
Product Data Sheet
_____________________________________________________________________________________________________
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
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PHYSICAL PROPERTIES
Property Test Procedure Specification
Color White, Gray or Tan
Thickness ASTM D751 .045”
Breaking Strength (lbf) ASTM D751 298 x 278
Seam Strength (lbf) ASTM D751 286
Tear Strength (lbf) ASTM D751 89 x 109
Elongation ASTM D751 35% x 34%
Heat Aging ASTM D3045 > 90 %
Static Puncture Resistance ASTM D5602 PASS
Dynamic Puncture Resistance ASTM D5635 PASS
Low Temperature Bend ASTM D2136 PASS (-40ºF)
Permeance ASTM E96 .003 Perms
Dimensional Stability ASTM D1204 0.3%
Wt. Change after Water Immersion ASTM D570 1.20%
Accelerated Weathering ASTM G155 Pass
Fungi Resistance ASTM G21 Pass
Solar Reflectivity ASTM C1549 .82 (white)
Emissivity ASTM C1371 .91 (white)
SRI ASTM E1980 109 (white)
Flex Elvaloy® based membranes meet the requirements of ASTM D4434 standard specification for
poly (vinyl chloride) based sheet roofing.
WARRANTY
The Flex MF/R 45 Plus Elvaloy® Roofing Membrane may receive the manufacturer's standard
five (5) year or optional ten (10) year or fifteen (15) year guarantee of watertightness.
Elvaloy® is a registered trademark of Dupont.
_____________________________________________________________________________________________________
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
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