ASTM D6878-08

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D 6878 – 08
Standard Specification for
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Thermoplastic Polyolefin Based Sheet Roofing
This standard is issued under the fixed designation D6878; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D2137 Test Methods for Rubber Property—Brittleness
Point of Flexible Polymers and Coated Fabrics
1.1 This specification covers flexible sheet made from
D 5538 Practice for Thermoplastic Elastomers—
thermoplastic polyolefin (TPO) as the principal polymer,
Terminology and Abbreviations
intended for use in single-ply roofing membranes exposed to
G151 Practice for Exposing Nonmetallic Materials in Ac-
the weather. The sheet shall contain reinforcing fabrics or
celerated Test Devices that Use Laboratory Light Sources
scrims.
G155 Practice for Operating Xenon Arc Light Apparatus
1.2 The tests and property limits used to characterize the
for Exposure of Non-Metallic Materials
sheet are values intended to ensure minimum quality for the
intended purpose. In-place roof system design criteria, such as
3. Materials and Manufacture
fire resistance, field seaming strength, material compatibility,
3.1 The sheet shall be formulated from ethylene and higher
andupliftresistance,amongothers,arefactorswhichshouldbe
alpha-olefin polymers, copolymers, and mixtures thereof, in
considered but are beyond the scope of this specification.
amounts greater than 50%, by weight of the total polymer
1.3 The values stated in SI units are to be regarded as the
content suitably compounded to satisfy the physical require-
standard. The values stated in parentheses are for information
ments in the specification (see Practice D5538).
only.
3.2 The sheet shall be capable of being heat welded, fused,
1.4 This standard may involve hazardous materials, opera-
or adhesively bonded to itself for making watertight field
tions, and equipment. This standard does not purport to
splices and repairs, and the supplier or fabricator shall recom-
address all of the safety concerns, if any, associated with its
mend suitable methods and materials.
use. It is the responsibility of the user of this standard to
3.3 Sheet shall be reinforced with fabric or scrim.
establish appropriate safety and health practices and deter-
mine the applicability of regulatory requirements prior to use.
4. Physical Properties and Tolerances
4.1 Each sheet specimen shall meet or exceed the physical
2. Referenced Documents
2 requirements prescribed in Table 1.
2.1 ASTM Standards:
4.2 The tolerance for time conditions (aging, weathering,
D471 Test Method for Rubber Property—Effect of Liquids
and so forth) is 615 min or 61% of the period, whichever is
D573 Test Method for Rubber—Deterioration in an Air
greater, unless otherwise specified.
Oven
4.3 The tolerance for temperature conditions (aging, weath-
D751 Test Methods for Coated Fabrics
ering, and so forth) is 62°C (64°F) of the specified tempera-
D1149 Test Methods for Rubber Deterioration—Cracking
ture, unless otherwise specified.
in an Ozone Controlled Environment
D1204 Test Method for Linear Dimensional Changes of
5. Dimensions and Permissible Variations
Nonrigid Thermoplastic Sheeting or Film at Elevated
5.1 The width and length of the sheet shall be agreed upon
Temperature
between the purchaser and the supplier.
5.1.1 The width and length tolerance shall be +3%, −0%.
5.1.2 The thickness tolerance shall be +15%, –10% of
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This specification is under the jurisdiction of ASTM Committee D08 on
thickness agreed upon by the purchaser and supplier, but in no
RoofingandWaterproofingandisthedirectresponsibilityofSubcommitteeD08.18
case shall it be less than the minimum in Table 1.
on Nonbituminous Organic Roof Coverings.
CurrenteditionapprovedJuly1,2008.PublishedJuly2008.Originallyapproved
6. Workmanship, Finish, andAppearance
in 2003. Last previous edition approved in 2006 as D6878–06a.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 The sheet, including factory seams, if present, shall be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
watertight and free of pinholes, particles of foreign matter,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. protruding fibers or reinforcement, undispersed raw material,
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D6878–08
TABLE 1 Physical Requirements for TPO Sheet
7.13.1 Practice G 151 and G 155—Xenon-arc apparatus
Thickness, min, mm (in.) shall be operated in accordan
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