1、Designation: D6757 07 (Reapproved 2013)D6757/D6757M 16Standard Specification forUnderlayment Felt Containing Inorganic Fibers Used inSteep-Slope Roofing1This standard is issued under the fixed designation D6757;D6757/D6757M; the number immediately following the designation indicatesthe year of origi
2、nal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers (1) inorganic fiber-reinforced organic
3、 felt underlayment and (2) inorganic fiber-based felt for useas underlayment with steep-slope roofing products. The intent of this specification is to provide criteria for producing andevaluating underlayments with a significantly reduced tendency to wrinkle before or after the installation of steep
4、 roofing products.1.2 The values stated in either SI units or inch-pound units are to be regarded separately as the standard. The values inparentheses are for information only.stated in each system may not be exact equivalents; therefore, each system shall be usedindependently of the other. Combinin
5、g values from the two systems may result in non-conformance with the standard.1.3 The following safety hazards caveat pertains only to the test method portion, Section 8, of this specification: This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It i
6、s the responsibility of the user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior touse.2. Referenced Documents2.1 ASTM Standards:2D146 Test Methods for Sampling and Testing Bitumen-Saturated Felts and Woven Fabrics
7、 for Roofing and WaterproofingD228 Test Methods for Sampling, Testing, andAnalysis ofAsphalt Roll Roofing, Cap Sheets, and Shingles Used in Roofing andWaterproofingD1079 Terminology Relating to Roofing and WaterproofingD4869 Specification for Asphalt-Saturated Organic Felt Underlayment Used in Steep
8、 Slope Roofing1 This specification is under the jurisdiction of ASTM Committee D08 on Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.02 on SteepRoofing Products and Assemblies.Current edition approved June 15, 2013Jan. 1, 2016. Published July 2013January 2016. Origina
9、lly approved in 2002. Last previous edition approved in 20072013 asD6757 07.D6757 07 (2013). DOI: 10.1520/D6757-07R13.10.1520/D6757_D6757M-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolu
10、me information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequ
11、ately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohock
12、en, PA 19428-2959. United States1F1087 Test Method for Linear Dimensional Stability of a Gasket Material to Moisture3. Terminology3.1 DefinitionsFor definitions of terms used in this specification, refer to Terminology D1079.4. Classification4.1 Organic felts that are reinforced with inorganic fiber
13、s are covered by this specification.4.2 Inorganic fiber-based asphaltic and nonasphaltic felts are covered by this specification.5. Materials and Manufacture5.1 In the process of manufacture, a single thickness of inorganic mat or organic felt that is reinforced with inorganic fibers shallbe uniform
14、ly saturated or coated.6. Performance Requirements6.1 The material shall conform to the physical requirements prescribed in Table 1.6.2 The finished product shall not crack nor be so sticky as to cause tearing or other damage upon being unrolled at temperaturesbetween 1 and 60C (3030 and 140F).140F.
15、 The finished product shall pass the water shower exposure test in accordance with8.1.4, indicating resistance to liquid water transmission.7. Dimensions, Masses, Workmanship, Finish, and Appearance7.1 Dimensions and masses to be agreed upon between buyer and seller.7.2 The finished material shall b
16、e free of visible external defects, such as holes, ragged or untrue edges, breaks, cracks, tears,bulges, and indentations.8. Sampling and Test Methods8.1 Sample the material and determine the properties enumerated in this specification in accordance with Test Methods D146.8.1.1 Tear StrengthUse test
17、 method in accordance with Test Methods D228.8.1.1.1 Precision and BiasA precision and bias statement is to be determined.8.1.2 Pliability TestUse test method in Test Methods D228.8.1.3 Behavior on HeatingUse test method in Test Methods D228.8.1.4 Liquid Water TransmissionUse test method in accordan
18、ce with Specification D4869.TABLE 1 Performance RequirementsTear strength, min at 23 2C,(73 4F),N, (lbf)4.0, (0.88) (in anydirection)Tear strength, min at 23 2C,73 4F,N, lbf4.0, 0.88 (in anydirection)Pliability at 23 2C, (73 4F), the tenstripstested shall not crack whenbent 90at a uniform speed over
19、 a19 mm (0.75 in.)radius corner in 2 spassPliability at 23 2C, 73 4F, the tenstrips tested shall not crack whenbent 90 ata uniform speed over a19 mm 0.75 in. radiuscorner in 2 spassBehavior (loss) on heating at 105C(221F)for 5 h, max, %4Behavior (loss) on heating at 105C221F for 5 h, max, %4Liquid w
20、ater transmission test passDimensional stability,low humidity to high humidity,max elongation, %1.65D6757/D6757M 1628.1.4.1 Precision and BiasNo statement is made about either the precision or bias of this test method of measuring resistanceto liquid water transmission since the result merely states
21、 whether or not there is conformance to the criteria specified in theprocedure.8.2 Determine the dimensional stability of the product by Test Method F1087. except as modified here.8.2.1 Three specimens should be dried per Section 7 of Test Method F1087 for Dimensional Stability to Low Humidity. Reco
22、rdthe length and width of the specimens after drying and record as the dry length dimension initial readings of the specimens.8.2.2 The specimens are then tested according to 7.3 of Test Method F1087 for Dimensional Stability to High Humidity.Measure the samples in the same place as previously measu
23、red for dry specimens and record as final readings.8.2.3 Measure the expansion of the product in going from the conditioned state to the water immersion state.Report the resultsas percent dimensional change from low humidity (dry) measurements to high humidity measurements calculated using thefollow
24、ing equation:8.2.3.1 Low humidity to high humidity:L%5Lh 2LlLl3100 (1)where:Ll = low humidity (dry) length of sample,Lh = high humidity length of sample, andL% = the percent change in length from low to high humidity.8.2.4 Calculate and report the average percent change in length of the three indivi
25、dual specimens. The change reported is thechange from low humidity (dry) to high humidity measurements.8.2.5 Precision and BiasTo be determined.9. Inspection9.1 Inspection of the material shall be made as agreed upon between the purchaser and the supplier as a part of the purchasecontract.10. Reject
26、ion and Resubmittal10.1 Failure to conform to any of the requirements prescribed in this specification shall constitute grounds for rejection. In caseof rejection, the seller shall have the right to re-inspect the rejected material and resubmit the lot after removal of those packagesnot conforming t
27、o the requirements.11. Packaging and Package Marking11.1 Unless otherwise agreed upon between the supplier and purchaser, each product package shall be plainly marked with thesuppliers name, the product brand, and the ASTM designation.11.2 The rolls shall be securely wrapped or banded in a manner th
28、at completely encircles the roll and will prevent slipping orunrolling.11.3 No roll shall contain more than two pieces, and no more than 3 % of the rolls in any lot shall contain two pieces. If a rollcontains a manufacturing splice, the splice shall be clearly marked.12. Keywords12.1 coated fibergla
29、ss mat; fiberglass; inorganic fibersreinforced; organic felt; steep roofing; underlaymentASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination o
30、f the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.
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