TPO Fleece-Back Membrane
45 Mil
60 Mil

DESCRIPTION

TPO Fleece-Back Membrane meets or exceeds all of the requirements for ASTM D 6878-03 Thermoplastic Polyolefin membrane. The Fleece-Back Membrane is reinforced with a 9 x 9, 1000 denier polyester fabric.

INSTALLATION

TPO fleece-back may be installed as a mechanically attached, a fully adhered, or a ballasted system.  Please consult current WeatherStar TPO specifications for specific application needs.

PREPARATION OF SUBSTRATES

Substrates must be clean, dry, smooth, and free of sharp edges, fins, loose or foreign materials, oil, grease, or other materials which may damage the membrane.

All rough surfaces which could damage the membrane shall be repaired as specified to offer a smooth substrate.

All surface voids greater than 1/4" (6.35 mm) wide shall be properly filled with an acceptable material.

STORAGE

Store in original, unopened packaging and away from sources of punctures and physical damage. 

Assure that structural decking will support the loads incurred by the material stored on roof top. The deck load limitations should be specified by the project designer.

SHELF LIFE

Not applicable.

PRECAUTIONARY DATA

To avoid sources of punctures and physical damage, take care when moving, transporting, or handling.

WARRANTY

American WeatherStar warrants that the material supplied will meet or exceed physical properties as published. The contractor guarantees that workmanship will be free of defects in coating application. Since performance of previously installed substrate is beyond the control of American WeatherStar or the contractor, requests for additional warranty coverage shall be subject to prior approval by American WeatherStar.

PHYSICAL PROPERTIES

PROPERTY	TEST METHOD	MINIMUM	TYPICAL VALUES
Thickness, min., mil (mm):	ASTM D 751	39 (0.99)	45 (1.14) 60 (1.52)
Thickness Over Scrim, mil (mm):      45 (1.14):      60 (1.52):	ASTM D 6878 Annex A1	12 (0.31)	15 (0.38) 22 (0.56)
Breaking Strength, min., lbf (N)	ASTM D 751	220 (976)	330 (1500)
Elongation at Reinforcement Break,      min., %:	ASTM D 751	15	30
Tearing Strength, min., lbf (N):	ASTM D 751	55 (245)	156 (694)
Brittleness Point, max, ºF (ºC):	ASTM D 2137 Method B	-40 (-40)	-49 (-45)
Ozone Resistance, No Cracks:	ASTM D 1149	Pass	Pass
Properties After Heat Aging: (retained values) Breaking Strength, % min.: Elongation at Reinforcement Break, % min.: Tearing Strength, % min.: Weight Change (mass), max %:	ASTM D 573 ASTM D 751 ASTM D 751 ASTM D 751 ASTM D 751	90 90 60 ±1	90 90 60 -0.02
Linear Dimensional Change, max, %:	ASTM D 1204	±1	-0.01
Water Absorption, max, mass %:	ASTM D 471	±3	+1.2
Factory Seam Strength, lbf (N):	ASTM D 751	66 (290)	75 (330)
Accelerated Weathering:	ASTM G 151 ASTM G 155	Pass	Pass
Water Vapor Permeance – Perm:	E 96	N/A	0.0122
Puncture Resistance – lbf (N):	FTM 101C Method 2031	200 (890)	337 (1500)