Flex FB 45 TPO User Manual

Product Data Sheet

FLEX FB 45 TPO PLUS ROOF SYSTEMS

(FLEECE BACKED, REINFORCED,THERMOPLASTIC POLYOLEFIN MEMBRANE)

PRODUCT DESCRIPTION

The Flex FB 45 TPO Plus (thermoplastic polyolefin) polyester reinforced fleece backed roofing
membranes are designed for use in new or re-roofing roofing systems. The Flex FB TPO Plus
membranes are manufactured in widths of 5’ and 10’x100’ for economical installations. The Flex FB 45
TPO Plus membranes are available in 3 standard colors white, tan and gray. Flex FB 45 TPO Plus
membranes offer the proven weathering resistance of rubber (derived from its high ethylene propylene
rubber content) combined with the thermoplastic properties of polypropylene. The combination results in
a roofing membrane with hot air welded seams and the durability of EPDM roofing membranes. The
Flex FB 45 TPO Plus membranes polyester reinforcement allows for structural movement with no
splitting or cracking. The combination of the reinforcing scrim, fleece backing and the TPO membrane
provide Flex FB 45 TPO Plus membrane with high breaking strength, tearing strength and puncture
resistance. The specially formulated membrane offers excellent resistance to solar UV and chemical
exposure as well as remaining flexible in cold temperatures.

USE

Flex FB 45 TPO Plus membrane can be installed in new, re-roof (tear-off) and recover roof constructions.
In recover construction, if the existing roof is structurally acceptable, the Flex roof system can save the
cost of disposing of the original roof system. Flex FB 45 TPO Plus membranes can be adhered directly
over layers of approved roof board insulation or cover boards. The Flex FB 45 TPO Plus membrane may
also be secured to the deck using an approved mechanically fastened system utilizing methods that have
been independently tested for wind uplift. The Flex FB 45 TPO Plus membranes are true thermoplastics,
therefore all seams are sealed by the hot air welding method creating a seam as strong as the original
membrane.

FEATURES

· Excellent low temperature impact resistance.

· No Halogenated Flame Retardants.

· Plasticizer Free - Chlorine Free.

· Recyclable, environmentally friendly product.

· Chemically resistant to acids, bases and restaurant exhaust emissions.

· Available in White, Gray or Tan.

· White and Tan Flex FB TPO Plus Membranes LEED™ Qualified.

· White and Tan Flex FB TPO Plus Membranes are Energy Star® roof products.

INSTALLATION
The roofing system must be installed by an authorized Flex Roofing Systems TPO applicator. The Flex
applicator must inspect the area to be roofed to determine if the installation of a Flex Roof System is

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Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533

Tel: [phone] Fax: [phone] www.FlexRoofingSystems.com

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acceptable. The substrate must be clean, smooth, dry and free of flaws, debris and other irregularities.
Follow Flex Specifications and NRCA recommendations for installation of wood nailers around
perimeters and penetrations. Install approved insulation according to Flex’s standard fastening
requirements or applicable code whichever is more stringent. The membrane is mechanically attached
using the disk and fastener in the seam method. Fastener spacing increments are determined by the
projects specification criteria and or printed guide specifications. For adhered systems, the membrane is
laminated to the appropriate substrate using Flex Fleece back Substrate Adhesive. All seams are
completed by the hot air welding method. All non-factory cut edges must be sealed with Flex Clear TPO
Cut-Edge Sealant. Contact the Flex Technical Service Department for the specific design requirements
and installation procedures for these two systems.

PHYSICAL PROPERTIES

Property Test Procedure Specification

Color white, gray or tan
Roll Size 5’x100’, 10’x100’
Weight 10’x100’ roll = 284 lbs.
5’x100’ roll = 142 lbs.
Thickness ASTM D751 0.045”
Thickness over scrim ASTM D751 0.015”
Breaking Strength (lbf) ASTM D 751 430 x 360
Seam Strength (lbf) ASTM D751 100
Elongation (min%) ASTM D751 30%
Heat Aging ASTM D573 >90%
Tear Strength (lbf) ASTM D751 90 x 120
Puncture Resistance FTMS 101C 2031 >290 lbs.
Cold Brittleness ASTM D2137 -40° C Pass
Dimensional Change ASTM D1204 0.2%
Water Absorption ASTM D471 0.7%
Ozone Resistance ASTM D1149 Pass
Weather Resistance ASTM G155 Pass
Permeance ASTM E96 0.070 perms
Hydrostatic Resistance ASTM D751 390 psi
Reflectivity (white) ASTM C1549 0.76
Emissivity (white) ASTM C1371 0.90
SRI (solar reflectance index) ASTM E1980 109

Flex FB 45 TPO Plus membranes meet or exceed the requirements of ASTM 6878 Standard Specification
for Thermoplastic Polyolefin (TPO) Based Sheet Roofing.

WARRANTY
The Flex FB 45 TPO Roofing Membrane may receive the manufacturers standard five (5) year or optional
ten (10) year or fifteen (15) year guarantee of watertightness.

_____________________________________________________________________________________________________

Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533

Tel: [phone] Fax: [phone] www.FlexRoofingSystems.com

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