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Description of ASTM-D4869 2011ASTM D4869 / D4869M - 05(2011)e1Standard Specification for Asphalt-Saturated Organic Felt Underlayment Used in Steep Slope RoofingActive Standard ASTM D4869 / D4869M | Developed by Subcommittee: D08.02 Book of Standards Volume: 04.04 ASTM D4869 / D4869MAbstract This specification covers asphalt-saturated organic felt for use as an underlayment in steep slope roofing. The objective of this specification is to provide a finished product that will lie flat and resist wrinkling, puckering, and shrinking when left exposed to the sun, rain, frost, or dew for a period of two weeks after application. In the process of manufacture, a single thickness of organic dry felt shall be uniformly saturated with an asphaltic saturant and the felt shall be produced principally from organic fibers. The surface of the felt shall be uniform and relatively smooth and upon splitting or tearing on the bias, the felt shall appear free of lumps or particles of foreign substances. The material shall conform to the prescribed physical requirements such as tear strength, pliability, loss on heating, liquid water transmission, breaking strength, and dimensional stability, and to the specified dimension and mass requirements such as roll width, roll area, net mass of saturated felt, net mass of desaturated felt, saturation, moisture, and saturating efficiency. The finished product shall not crack nor be so sticky as to cause tearing or other damage upon being unrolled. The following tests shall be taken: (1) determination of saturation percent of felt, (2) determination of resistance to liquid water transmission using water shower exposure test, and (3) test for dimensional stability to low and high humidity. The water shower exposure test for underlayment is illustrated. This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. 1. Scope 1.1 This specification covers asphalt-saturated organic felt for use as an underlayment with steep slope roofing. 1.2 The objective of this specification is to provide a finished product that will lie flat and resist wrinkling, puckering, and shrinking when left exposed to the sun, rain, frost, or dew for a period of two weeks after application. 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 non-conformance with the standard. 1.4 The following safety hazards caveat pertains only to the test method portion, Section 8, of this specification: 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 and health practices and determine the applicability of regulatory limitations prior to use.
ASTM Standards D70 Test Method for Density of Semi-Solid Bituminous Materials (Pycnometer Method) D146 Test Methods for Sampling and Testing Bitumen-Saturated Felts and Woven Fabrics for Roofing and Waterproofing D228 Test Methods for Sampling, Testing, and Analysis of Asphalt Roll Roofing, Cap Sheets, and Shingles Used in Roofing and Waterproofing D1079 Terminology Relating to Roofing and Waterproofing D1922 Test Method for Propagation Tear Resistance of Plastic Film and Thin Sheeting by Pendulum Method D6136 Test Method for Kerosine Number of Unsaturated (Dry) Felt by Vacuum Method F1087 Test Method for Linear Dimensional Stability of a Gasket Material to Moisture Keywords asphalt-saturated felt; roofing; steep slope; underlayment; ICS Code ICS Number Code 91.100.15 (Mineral materials and products) DOI: 10.1520/D4869_D4869M-05R11E01 ASTM International is a member of CrossRef. ASTM D4869 / D4869MThis book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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