1、Designation: D 2626 04Standard Specification forAsphalt-Saturated and Coated Organic Felt Base SheetUsed in Roofing1This standard is issued under the fixed designation D 2626; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea
2、r of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers aspha
3、lt-saturated and coatedorganic felt base sheet with mineral surfacing on the top side,with or without perforations, for use as the first ply of abuilt-up roof. When not perforated, this sheet is suitable for useas a vapor retarder, with a solid mopping of asphaltic material,under roof insulation or
4、between multiple layers of roofinsulation.1.2 The values stated in SI units are to be regarded as thestandard. The values in parentheses are for information only.2. Referenced Documents2.1 ASTM Standards:2D 146 Test Methods for Sampling and Testing Bitumen-Saturated Felts and Woven Fabrics for Roofi
5、ng and Wa-terproofingD 226 Specification for Asphalt-Saturated Organic FeltUsed in Roofing and WaterproofingD 228 Test Methods for Sampling, Testing, and Analysis ofAsphalt Roll Roofing, Cap Sheets, and Shingles Used inRoofing and WaterproofingD 1079 Terminology Relating to Roofing, Waterproofing,an
6、d Bituminous MaterialsE 96 Test Methods for Water Vapor Transmission of Mate-rials3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, refer to Terminology D 1079.3.2 Definitions of Terms Specific to This Standard:3.2.1 lotfor the purpose of sampling, a lot shall consis
7、t ofall material of the same type and size offered for delivery at onetime.4. Materials and Manufacture4.1 In the process of manufacture, a single thickness of dryorganic felt shall be saturated with hot asphalt, coated on bothsides with a hot asphaltic material, and surfaced on the top sidewith min
8、eral surfacing.4.2 The felt shall be produced principally from organicfibers, or mixtures thereof. The surface of the felt shall beuniform and relatively smooth. Upon splitting or tearing on thebias, the felt shall appear reasonably free of lumps and particlesof foreign substances.4.3 The coating sh
9、all be a hot-applied asphalt materialpermitted to be compounded with a mineral stabilizer.4.4 The reverse side of the base sheet may be covered witha suitable material to prevent sticking in the roll.5. Physical Properties5.1 The material shall conform to the physical requirementsprescribed in Table
10、 1 and the dimensions and masses pre-scribed in Table 2 and Table 3. Perforated base sheets shallconform to the same requirements as the plain type but shallalso have uniformly spaced perforations.5.2 The finished product shall not crack nor be so sticky asto cause tearing or other damage upon being
11、 unrolled attemperatures between 10 and 60C (50 and 140F).6. Dimensions, Mass, and Permissible Variations6.1 The material shall conform to the dimensions andmasses prescribed in Table 2.6.2 Perforated material shall also conform to the dimensionsand other requirements prescribed in Table 3.7. Workma
12、nship, Finish, and Appearance7.1 The felt shall be thoroughly and uniformly saturated,and shall show no unsaturated spots at any point upon cutting50-mm (2-in.) wide strips at random across the entire width ofthe sheet and splitting them open for their full length.1This specification is under the ju
13、risdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.04on Felts and Fabrics.Current edition approved Aug.1, 2004. Published August 2004. Originallyapproved in 1967. Last previous edition approved in 1997 as D 2626 97b.2For referenced ASTM
14、standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohock
15、en, PA 19428-2959, United States.7.2 The coating shall be applied uniformly on both sides ofthe sheet in a continuous, unbroken film that extends to theedges of the sheet. The coating may be smooth or finely veined,but not coarsely veined.7.3 The mineral surfacing shall be applied uniformly overthe
16、entire surface of the top side of the sheet. If soap or othermaterial is used on the reverse side of the sheet, the amountapplied shall not be so great as to interfere with adhesionbetween the base sheet and plying cement. Coarse mica shallnot be used on either surface.7.4 The finished material shal
17、l be free of visible defectssuch as holes, ragged or untrue edges, breaks, cracks, tears,protuberances, and indentations, except for intentionally pro-vided perforations and the associated protuberances.8. Sampling and Test Methods8.1 Sample the material and determine the properties enu-merated in t
18、his specification in accordance with Test MethodsD 228, unless otherwise indicated.8.2 Breaking StrengthTest Methods D 146, Section 13(Strength).8.3 Water Vapor PermeanceTest Methods E 96, Proce-dure B.8.4 Moisture Content Test Methods D 146, Section 12(Moisture).8.5 Thickness of Desaturated FeltTes
19、t Methods D 146,Section 21 (Thickness of Felts).8.6 For perforated base sheet, determine the average ventingarea in accordance with 8.2 (from the Sampling and TestMethods section) of Specification D 226.9. Inspection9.1 InspectionInspection shall be in accordance with therequirements of this specifi
20、cation.9.2 Inspection AlternativesAlternative inspection require-ments shall be determined by and as agreed upon between thepurchaser and the supplier.10. Rejection and Resubmittal10.1 Failure to ConformFailure to conform to any of therequirements as stated in this specification constitutes groundsf
21、or rejection.10.2 Rejection RedressThe supplier shall have the right toinspect the rejected materials. The supplier and the purchasershall agree to the quantity of rolls deemed unacceptable. Thesupplier shall then have the right to submit the same number ofnew rolls as replacement.11. Packaging and
22、Package Marking11.1 Unless otherwise agreed upon between the supplier andpurchaser, each product package shall be plainly marked withthe suppliers name, the product brand, the ASTM designation,and type of bitumen if not evident in the label name of theproduct.11.2 The rolls shall be securely wrapped
23、 or banded in amanner that completely encircles the roll and will preventslipping or unrolling.11.3 No roll shall contain more than two pieces, and nomore than 3 % of the rolls in any lot shall contain two pieces.If a roll contains a manufacturing splice, the splice shall beclearly marked.12. Keywor
24、ds12.1 asphalt saturated and coated; built-up roofs; first ply;organic feltTABLE 1 Physical Requirements of Asphalt-Saturated andCoated Base SheetPliability, number of failures, max 2Behavior on heating no flowing, sagging,blistering, or absorption ofthe coatingAverage breaking strength, min, kN/m(l
25、bf/in.) width:with fiber grainacross fiber grain6.1 (35)3.5 (20)Water vapor permeance, at 23C (73.4F),max, ng/Pasm2(grains/hft2inHg)17 (0.3)AATest nonperforated sheet only.TABLE 2 Dimensions and Masses of Asphalt-Saturated andCoated Base SheetWidth of roll, mm (in.) 914 (36) 6 0.7 %, or asagreed upo
26、n betweenpurchaser andsupplierArea of roll as agreed upon betweenpurchaser andsupplierNet mass of base sheet, min, g/m2(lb/100 ft2) 1806 (37)Moisture, max, mass % 2.0AMass of desaturated felt, min, g/m2(lb/100 ft2) 253 (5.2)Thickness of desaturated felt, min, mm (in.) 0.64 (0.025)Mass of asphalt sat
27、urant soluble in trichloroethylenemin, g/m2(lb/100 ft2)B350 (7.2)Mass of coating and surfacing, min, g/m2(lb/100 ft2) 878 (18.0)Mass per side of asphalt coating, exclusive ofmineral stabilizer and surfacing, min, g/m2(lb/100 ft2)170 (3.5)Mass percent of mineral matter passing a 212-m(No. 70) sieve o
28、n the basis of the total mass ofmineral-filled coating and mineral surfacing,max, %60AAt time of manufacture. Products with higher moisture content at time ofinstallation may cause hot materials to foam, creating interply voids that may resultin blisters.BThe mass of the saturant shall be not less t
29、han 1.40 times the mass of thedesaturated, dry felt.TABLE 3 Dimensions and Other Requirements for PerforatedBase SheetDiameter of holes, max, mm (in.) 6.4 (0.25)Spacing of holes in each row, center tocenter, min, mm (in.)114 (4.5)Spacing between adjacent rows, center tocenter, min, mm (in.)114 (4.5)
30、Number of holes/m2(holes/ft2), min 14 (1.3)Average venting area, min, % of total area 0.04D2626042ASTM 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 determ
31、ination of 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 w
32、ithdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that
33、your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D2626043
