1、Designation: D 1970 09Standard Specification forSelf-Adhering Polymer Modified Bituminous Sheet MaterialsUsed as Steep Roofing Underlayment for Ice DamProtection1This standard is issued under the fixed designation D 1970; the number immediately following the designation indicates the year oforiginal
2、 adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers polymer modified bituminoussheet material
3、s intended for use as underlayment on roof eaves,or valleys, or both, to prevent leakage of shingle, tile, or metalroofs from water back-up due to ice dams.1.2 These underlayment sheets have a sticky adhesive layerwhich is exposed by removal of a protective sheet. The topsurface is suitable to work
4、on during the application of theexposed roofing.1.3 The values stated in SI units are to be regarded asstandard. The values given in parentheses are mathematicalconversions to inch-pound units that are provided for informa-tion only and are not considered standard.1.4 The following safety hazards ca
5、veat pertains to the testmethods portion, Section 8, of this standard. This standarddoes not purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the appli
6、cability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:2D 228 Test Methods for Sampling, Testing, and Analysis ofAsphalt Roll Roofing, Cap Sheets, and Shingles Used inRoofing and WaterproofingD 903 Test Method for Peel or Stripping Strength of Adhe-sive BondsD 1079
7、Terminology Relating to Roofing and Waterproof-ingD 1204 Test Method for Linear Dimensional Changes ofNonrigid Thermoplastic Sheeting or Film at ElevatedTemperatureD 2523 Practice for Testing Load-Strain Properties of Roof-ing MembranesD 4073 Test Method for Tensile-Tear Strength of Bitumi-nous Roof
8、ing MembranesD 5147 Test Methods for Sampling and Testing ModifiedBituminous Sheet MaterialE 96/E 96M Test Methods for Water Vapor Transmission ofMaterials3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, refer to Terminology D 1079.3.2 Definitions of Terms Specific
9、to This Standard:3.2.1 lotfor the purpose of sampling, a lot shall consist ofall material manufactured in one production run (not to exceed24 h) using the same source of raw materials.4. Types4.1 Products covered by this specification are of two types:Type 1, Standard Ice-Dam Underlayment; and Type
10、2, HT-IceDam Underlayment.5. Workmanship, Finish, and Appearance5.1 The underlayment sheet shall be supplied in roll form.5.2 The underlayment sheet shall be substantially uniformin thickness and appearance. It shall be free of visible defectssuch as holes, ragged or untrue edges, breaks, cracks, te
11、ars,protuberances, and indentations, except for those perforationsor protuberances which are intentional.5.3 The surface of the underlayment sheet shall be designedto provide traction and slip resistance to the applicator.NOTE 1The intent of 5.3 is to recognize that surface slipperiness isimportant
12、when working on a roof and, while no test method is specifiedin this standard, several methods for assessing the relative slipperiness ofsurfaces are available. It is the further intent of this paragraph to ensurethat, whatever method is used, the friction coefficient or resistance toslipping of the
13、 surface of these products should be at least as great asasphalt-saturated felt shingle underlayment tested under the same condi-tions of temperature and wetness as agreed between purchaser and seller.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and
14、 is the direct responsibility of Subcommittee D08.02on Prepared Roofings, Shingles and Siding Materials.Current edition approved Jan. 1, 2009. Published January 2009. Originallyapproved in 1990. Last previous edition approved in 2008 as D 1970 08.2For referenced ASTM standards, visit the ASTM websit
15、e, 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 Conshohocken, PA 19428-2959, United States
16、.5.4 Sheet sections shall be suitable for joining by themanufacturers recommended procedure. The entire lowersurface of the underlayment sheet shall be capable of beingfully adhered to the roof deck.6. Physical Requirements6.1 The underlayment sheet shall conform to the physicalrequirements prescrib
17、ed in Table 1.6.2 The underlayment sheet shall not crack nor be so stickyas to cause tearing or other damage upon being unrolled atmaterial temperatures between 4.4 and 60C (40 and 140F).7. Sampling7.1 From each lot of underlayment sheet, select sample rollsin accordance with Test Methods D 228.7.2
18、The rolls so selected shall constitute the representativesample used for all subsequent observations and tests pertain-ing to the lot of material being examined.8. Test Methods8.1 ConditioningUnless otherwise specified, conditiontest specimens for at least4hat236 2C (73.4 6 3.6F) and50 6 5 % relativ
19、e humidity prior to testing.8.2 Thickness:8.2.1 Measure the thickness of the shingle underlayment inaccordance with Test Methods D 5147.8.2.2 Report the number of measurements, the average andstandard deviation across the sheet.8.3 Maximum Load and Elongation at BreakThis testmethod covers the deter
20、mination of the maximum load andelongation at break of the underlayment sheets, as set forth inPractice D 2523 except as noted below.8.3.1 Specimens:8.3.1.1 Prepare five specimens from each sample roll inboth the longitudinal and transverse directions. Specimensshall be 25 mm (1 in.) 65 % wide by a
21、minimum of 150 mm(6 in.) 65 % long. For materials with high elongation thelength of the sample may be reduced to 100 mm (4 in.) 65%if necessary to avoid limitations imposed by dimensions of thetest machine.8.3.2 Procedure:8.3.2.1 Condition each specimen at least2hat236 2C(73.4 6 3.6F).8.3.2.2 Use a
22、constant rate of elongation (CRE) tensiontesting machine, preferably with automatic load and strainrecording equipment and clamps that permit a uniform clamp-ing pressure on the specimen without slipping. The initialclamp separation shall be a minimum of 75 mm (3 in.) 65%for sheets having an ultimat
23、e elongation of 75 % or less at23.9C (75F) and 50 mm (2 in.) 65 % for sheets having anultimate elongation greater than 75 % at 23.9C (75F).8.3.2.3 Maintain a rate of separation of 50 mm (2 in.) 63%per min.8.3.2.4 Record the percent elongation of each specimen atthe visual break of the modified bitum
24、en portion using anextensiometer, or mark the extension at visual break of themodified bitumen portion from the chart of the stress versustime (knowing the speed of the chart drive and the jawseparation rate).8.3.2.5 Record the maximum load attained by each speci-men.8.3.3 Calculation:8.3.3.1 Determ
25、ine the percent elongation at break of themodified bitumen portion obtained from the extensiometer inaccordance with the manufacturers instructions, or read di-rectly. Calculate the percent elongation from the chart asfollows:% Elongation 5ab3 100 % (1)where:a = extension at modified bitumen break (
26、extension atbreak on chart 3 jaw separation rate divided by chartspeed), andb = initial jaw separation.8.3.3.2 Determine the average percent elongation at breakof the modified bitumen portion in each direction.8.3.3.3 Calculate the average maximum load in each direc-tion.8.3.4 ReportFor each set of
27、five specimens in eachdirection report the individual measurements, the average andstandard deviation for the size of specimen (initial lengthbetween jaws), maximum load in kN/m (lbf/in.), percentelongation at modified bitumen break, and method of deter-mining elongation.8.4 Adhesion to PlywoodThis
28、test method covers thedetermination of the adhesive properties of the underlaymentsheets to plywood, as set forth in Test Method D 903 except asnoted below.8.4.1 Specimen Preparation:TABLE 1 Physical Requirements of Self-Adhering PolymerModified Bituminous Sheet Materials Used as Steep RoofingUnderl
29、ayment for Ice Dam ProtectionProperty SI Inch-PoundThickness, min 1.0 mm 40 milsMaximum load, minLongitudinal 4.4 kN/m 25 lbf/in.Transverse 4.4 kN/m 25 lbf/in.Elongation at break, min of modifiedbitumen portion10 %Adhesion to plywood, min at 40F 0.92 kgf/30.5 cm 2.0 lbf/ft widthAdhesion to plywood,
30、min at 75F 5.44 kgf/30.5 cm 12.0 lbf/ft widthThermal stability, max 3 mm 0.1 in.Flexibility temperature 29C 20FTear resistanceLongitudinal, min 89 N 20 lbfTransverse, min 89 N 20 lbfMoisture vapor permeance, max 5.7 ng/Pa.S.M.20.1 U.S. PermsSealability around nail passWaterproof integrity after low
31、temperatureflexibilitypassWaterproof integrity of lap seam passSlip resistance Greater thanasphalt saturatedfelt when testedunder the sameconditions oftemperature andwetness (seeNote 1)D19700928.4.1.1 The test specimen shall consist of one piece ofunderlayment sheet, 75 6 2by2006 2mm(36 0.125 by 86
32、0.125 in.), bonded for 15 in.2(75 3 125 mm) (3 by 5 in.) toone piece of 6 mm (14 in.) minimum thick plywood, APAGrade, Exposure 1, 75 by 150 mm (3 by 6 in.). The plywoodmust not be reused for testing.8.4.1.2 Roll test specimen three times back and forth with aroller which has a mass of 11.8 kg (26 l
33、b) 60.5 %, diameter of125 mm (5 in.) 65 %, and width of 125 mm (5 in.) 65%(2to 3 s per cycle).8.4.1.3 At least five specimens shall be tested for each testtemperature.8.4.1.4 It is recommended that specimens be assembledindividually. Cutting specimens to size after assembly mayinfluence the test res
34、ults.8.4.2 ConditioningThe test shall be performed at 23 62C (73.4 6 3.6F) and 4 6 2C (39.2 6 3.6F). Materialsused to construct test specimens and the roller, must beconditioned at the test temperature for at least 4 h prior toassembly. Similarly, test specimens must be conditioned at thetest temper
35、atures for at least 1 h prior to testing.NOTE 2Adhesion to other potential wood deck materials may bedetermined by this test method, but it has been observed that substratessuch as APA approved nonveneer sheets typically give greater adhesionvalues than the minimum specified in this standard for ply
36、wood.8.4.3 Apparatus:8.4.3.1 Perform the test in a constant rate of extension typetester.8.4.3.2 The rate of travel of the power-actuated grip shall be50 mm (2 in.)/min 63 %. This rate which provides a laminateseparation rate of 25 mm (1 in.)/min 63 % shall be uniformthroughout the test.8.4.4 Proced
37、ure:8.4.4.1 Conduct the test after the test specimens have beenconditioned at the test temperature (in the environmentalchamber) for 15 min.8.4.4.2 Separate the free end of the underlayment sheetfrom the plywood for a distance of about 50 mm (2 in.) leavingabout 75 mm (3 in.) of bonded length. Place
38、 the specimen inthe testing machine by clamping the free end of the plywood inone grip, turning back the free end of the sheet and clampingit in the other grip. Maintain the specimen in the approximateplane of the clamps during the test. Peel at least three quartersof the bonded area, even though a
39、peel or stripping value maybe indicated before this point.8.4.5 CalculationDetermine the peel strength on the chartas the average load line that will visually accommodate therecorded curve. Record the load so indicated, corrected fortare.8.4.6 ReportingFor each series of tests, report the numberof m
40、easurements, the average, and the standard deviation of allthe test values in kg/30.5 cm width (lb/ft of width).8.5 Thermal StabilityThis test method determines thethermal stability of the underlayment sheets as set forth in TestMethod D 1204, except as noted below.8.5.1 Specimens:8.5.1.1 The test s
41、pecimen shall consist of one piece ofunderlayment sheet, 100 6 2by1006 2mm(46 0.125 by4 6 0.125 in.), centered and bonded (as described in 7.4.2.1) toone piece of14-in. thick plywood, (APA Grade, Exposure 1)150 6 2by2006 2mm(66 0.125 by 8 6 0.125 in.).8.5.1.2 At least five specimens shall be tested
42、for eachsample roll.8.5.2 Procedure:8.5.2.1 Set specimens at a 45 angle in an air-circulatingoven maintained for 14 days at: (a)706 2C (158 6 3.6F) forType 1 products; or (b)956 2C (203 6 3.6F) for Type 2products.NOTE 3The higher test temperature for Type 2 products is intended toassess the performa
43、nce of these products at a higher temperature than thatused for Type 1. The test temperature is not intended to represent atemperature experienced in service but is intended to indicate that theType 2 products are more appropriate for applications where a highertemperature is expected to be experien
44、ced by the product in service.8.5.2.2 At the end of the oven-exposure period, allowspecimens to equilibrate to 23.9 6 1.1C (75 6 2F) and 50 65 % relative humidity for at least 4 h.8.5.2.3 From the lower edge of the sheet measure to thenearest 2.5 mm (0.1 in.) the furthest point of modified bitumenfl
45、ow. Estimate the average flow across the entire lower edge ofthe sample.8.5.3 ReportReport the individual specimen values, theaverage and the standard deviation.8.6 Low Temperature FlexibilityThis test method deter-mines the low temperature flexibility of the underlaymentsheets. For the sheet materi
46、al to be given a pass rating in thistest, the specimen must demonstrate either no visible signs ofcracking in the sheet after bending at the test temperaturethrough an angle of 180 6 5 around a 25 mm (1 in.) 65%diameter mandrel in 2 6 1 s, or minor surface cracking isobserved in the sheet and the he
47、ad of water test, performed ona sheet of material that has been subjected to this bending.8.6.1 SpecimensPrepare five specimens from each roll inboth the longitudinal and transverse direction for each tem-perature to be tested. Specimens shall be 25 mm (1 in.) 65%wide by 150 mm (6 in.) 65 % long.8.6
48、.2 ConditioningTest at the temperature specified forcompliance in Table 1 (29C (20F). Allow the refrigera-tion unit, mandrel and specimens to equilibrate for a minimumof2h.8.6.3 Procedure:8.6.3.1 After the specimens have been conditioned, positionthe center of the specimen firmly on the mandrel with
49、 theweathering side up. Bend the projecting ends without exertingany stress other than that required to keep the specimen incontact with the mandrel. Complete the entire procedure insidethe refrigerated unit within 2 6 1 s. Bend the specimen untilthe projecting ends of the specimen are parallel to each otherkeeping the bottom surface in contact with the mandrel throughan arc of 180 6 5. Repeat this procedure using a differentspecimen and bend with the weathering side down.8.6.3.2 Remove the specimen from the refrigerated unit and
