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ASTM D6878/D6878M-21

Current Revision

Standard Specification for Thermoplastic Polyolefin-Based Sheet Roofing

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1.1 This specification covers flexible sheet made from thermoplastic polyolefin (TPO) as the principal polymer, intended for use in single-ply roofing membranes exposed to the weather. The sheet shall contain reinforcing fabrics or scrims.

1.2 The tests and property limits used to characterize the sheet are values intended to ensure minimum quality for the intended purpose. In-place roof system design criteria, such as fire resistance, field seaming strength, material compatibility, and uplift resistance, among others, are factors which should be considered but are beyond the scope of this specification.

1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

1.4 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory requirements prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


This specification covers flexible sheet made from thermoplastic polyolefin (TPO) as the principal polymer, intended for use in single-ply roofing membranes exposed to the weather. The sheet shall contain reinforcing fabrics or scrims. The sheet shall be formulated from ethylene and higher alpha-olefin polymers, copolymers, and mixtures thereof, in amounts greater than 50 %, by weight of the total polymer content suitably compounded to satisfy the physical requirements specified. The sheet shall be capable of being heat welded, fused, or adhesively bonded to itself for making watertight field splices and repairs and shall be reinforced with fabric or scrim. Different tests shall be performed in order to determine the following physical properties of thermoplastic polyolefin sheets: dimensions, sheet overall thickness, coating thickness over scrim, breaking strength, elongation at break, tearing strength, brittleness point, ozone resistance, heat aging, linear dimensional change, water absorption, factory seam strength, and weather resistance.


SDO ASTM: ASTM International
Document Number D6878
Publication Date Nov. 1, 2021
Language en - English
Page Count 3
Revision Level 21
Supercedes
Committee D08.18
Publish Date Document Id Type View
Nov. 1, 2021 D6878_D6878M-21 Revision
July 15, 2019 D6878_D6878M-19 Revision
July 15, 2017 D6878_D6878M-17 Revision
Dec. 15, 2013 D6878_D6878M-13 Revision
June 1, 2011 D6878_D6878M-11A Revision
May 15, 2011 D6878_D6878M-11 Revision