DESCRIPTION:

American WeatherStar (WeatherStar) TPO membrane meets or exceeds all of the requirements for ASTM D 6878-03 Thermoplastic Polyolefin membrane. The membrane is reinforced with a 9x9, 1000 denier polyester fabric.

PHYSICAL PROPERTIES:

PROPERTY
ASTM TEST
METHOD
MINIMUM
TYPICAL
VALUES
Thickness, min, mil (mm) D 751 39 (0.99)
45 (1.14)
60 (1.52)
Thickness over scrim, mil (mm)
    45 (1.14)
D 6878
Annex A1
12 (0.31) 15 (0.38)
    60 (1.52) 22 (0.56)
Breaking strength, min,  lbf (N) D 751 220 (976) 330 (1500)
Elongation at reinforce-
ment break, min, %
D 751 15 30
Tearing strength, min, lbf (N) D 751 55 (245) 156 (694)
Brittleness point, max, ºF (ºC) D 2137
Method B
-40 (-40) -49 (-45)
Ozone resistance, no cracks D 1149 Pass Pass
Properties after heat aging:
(retained values) 
D 573    
    Breaking strength, %     min. D 751 90 90
    Elongation at reinforce-
    ment break, % min
D 751 90 90
    Tearing strength, %     min. D 751 60 60
    Weight change (mass),     max % D 751 ±1 -0.02
Linear dimensional change, max, % D 1204 ±1 -0.01
Water absorption, max,  mass % D 471 ±3 +1.2
Factory seam strength, lbf (N) D 751 66 (290) 75 (330)
Accelerated weathering G 151
G 155
Pass Pass
 
PROPERTY
OTHER TEST
METHODS
MINIMUM TYPICAL
VALUES
Water Vapor Permeance – Perm E 96 n/a 0.0122
Puncture Resistance – lbf (N) FTM 101C
Method 2031
200 (890) 337 (1500)

INSTALLATION:

TPO 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.

PRODUCT DATA:

AVAILABLE COLORS & SIZES
White Grey
4’ X 100’ (1.22 m X 30.48 m) 4’ X 100’ (1.22 m X 30.48 m)
6.16’ X 100’  (1.88 m X 30.48 m) 8’ X 100’ (2.43 m X 30.48 m)
8’ X 100’ (2.43 m X 30.48 m) Tan
10’ X 100’ (3.05 m X 30.48 m) 4’ X 100’ (1.22 m X 30.48 m)
12.33’ X 100’ (3.76 m X 30.48 m) 8’ X 100’ (2.43 m X 30.48 m)

LEED INFORMATION:

Reflectivity, % (ASTM C 1549)
    White
    Grey
    Tan

78
47
65
Emissivity (ASTM C 1371)
    White, Grey, Tan
0.90
(All colors)
Manufacturing Location: Tuscumbia, AL

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.

Waste products such as petroleum products, greases, animal fats, and oils (mineral and vegetable) should be isolated from the membrane.

Refer to Material Safety Data Sheet for additional information.



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