Flex TPO 45 User Manual

Product Data Sheet

FLEX 45 MIL TPO PLUS SA

(SELF ADHERED THERMOPLASTIC POLYOLEFIN MEMBRANE)

PRODUCT DISCRIPTION

Flex 45 TPO Plus SA mil thermoplastic polyolefin (TPO) is a self-adhered roof membrane with a hot air
weldable seam. The membrane is available in 2 colors, white and tan. The membrane is manufactured in
4 roll sizes: 5’x50’, 10’x50’, 5’x100’, and 10’x100’. Flex 45 TPO Plus SA membranes combine Flex’s
proven TPO technology with a proprietary factory applied adhesive pre-installed on the back of the sheet
for a labor saving installation. The membrane is specifically formulated for long-term weather resistance
without the use of either polymeric or liquid plasticizers. The pressure-sensitive adhesive is a 100%
solids, hot melt adhesive that eliminates VOC and odor concerns typically associated with fully adhered
systems. The adhesive is factory applied to provide uniform thickness yielding consistent field
performance. An uncoated edge is maintained to allow for hot air welded field seams. The release liner is
silicon coated on both sides to provide consistent, easy release from the adhesive even if either side
accidentally touches the adhesive again after removal.

FEATURES

· High tack, pressure sensitive adhesive

· Wide window of weldability

· Outstanding puncture resistance

· Chlorine-free with no halogenated flame retardants

· Plasticizer-free, does not contain liquid or polymeric plasticizers

· Excellent low temperature impact resistance

· Excellent chemical resistance to acids, bases and restaurant exhaust emissions

· Exceptional resistance to solar UV, ozone and oxidation

· Low water vapor permeance and water absorption

· Polyester reinforcing fabric which is resistant to degradation by bacteria, mildew and fungi

· Consistent color

INSTALLATION

The Flex 45 TPO Plus SA Roofing Systems is fast to install since minimal labor and few components are
required. The Flex self-adhered membrane application begins with the insulation/underlayment being
attached per the required attachment specification.

1. The Flex 45 TPO Plus SA Membrane may only be installed when the outdoor temperature is 50° F

or rising.

2. The surface to which the membrane is to be applied must be very clean. Prior to membrane

placement, the surface of the insulation or underlayment board must be cleaned of dust and other
foreign matter using a fine push broom or a blower.

CAUTIONS AND WARNINGS
A static electric charge may develop when removing the poly release liner from the elastomeric
pressure sensitive adhesive on the back of the membrane sheet. To avoid the possibility of ignition,

________________________________________________________________________________________________

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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lids must be closed on any flammable solvent-based adhesives and a fire extinguisher should be
readily available.

· Care must be exercised when working close to a roof edge.

· Use proper stacking procedures to ensure sufficient stability of the rolls.

· Exercise caution when walking on wet membrane. Membranes may be slippery when wet.

· Store Flex 45 TPO SA rolls in the original undisturbed plastic wrap in a cool, shaded area and

cover with light colored, breathable, waterproof tarpaulins.

· Flex 45 TPO SA membrane that has been exposed to the weather for approximately 7 days or

longer must be prepared with Weathered Membrane Cleaner prior to hot air welding.

PHYSICAL PROPERTIES

Property Test Procedure Specification

Color white, tan
Roll Size 5’x100’, 10’x100’
5’x50’, 10’x50’
Weight 10’x100’ roll = 301 lbs.
5’x100’ roll = 148 lbs.
Thickness ASTM D751 0.045”
Thickness over scrim ASTM D751 0.015”
Breaking Strength (lbf) ASTM D751 290 x 270
Seam Strength (lbf) ASTM D751 100
Elongation (min%) ASTM D751 30%
Heat Aging ASTM D573 >90%
Tear Strength (lbf) ASTM D751 124 x 140
Puncture Resistance FTMS 101C 2031 >290 lbs.
Cold Brittleness ASTM D2137 -40° C Pass
Dimensional Change ASTM D1204 0.4%
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 45 TPO Plus membranes meet or exceed the requirements of ASTM 6878 Standard Specification for
Thermoplastic Polyolefin (TPO) Based Sheet Roofing.

WARRANTY
The Flex 45 TPO Plus SA 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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