ASTM D1970-08
(Specification)Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection
Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection
ABSTRACT
This specification covers the standards for polymer modified bituminous sheet materials proposed for use as underlayment on roof eaves, or valleys, or both, to prevent leakage of shingle, tile or metal roofs from water back-up due to ice dams. The underlayment sheet shall comply with the physical requirements which include thickness, maximum load, elongation, adhesion to plywood, thermal stability, flexibility, tear resistance, moisture vapor permeance, sealability, and slip resistance. The underlayment sheet shall not crack, as well, nor be too sticky as to cause damage upon being unrolled.
SCOPE
1.1 This specification covers polymer modified bituminous sheet materials intended for use as underlayment on roof eaves, or valleys, or both, to prevent leakage of shingle, tile, or metal roofs from water back-up due to ice dams.
1.2 These underlayment sheets have a sticky adhesive layer which is exposed by removal of a protective sheet. The top surface is suitable to work on during the application of the exposed roofing.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 The following safety hazards caveat pertains to the test methods portion, Section 7, of this standard. 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.
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Designation: D 1970 – 08
Standard Specification for
Self-Adhering Polymer Modified Bituminous Sheet Materials
Used as Steep Roofing Underlayment for Ice Dam
1
Protection
This standard is issued under the fixed designation D1970; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope Nonrigid Thermoplastic Sheeting or Film at Elevated
Temperature
1.1 This specification covers polymer modified bituminous
D2523 PracticeforTestingLoad-StrainPropertiesofRoof-
sheetmaterialsintendedforuseasunderlaymentonroofeaves,
ing Membranes
or valleys, or both, to prevent leakage of shingle, tile, or metal
D4073 Test Method for Tensile-Tear Strength of Bitumi-
roofs from water back-up due to ice dams.
nous Roofing Membranes
1.2 These underlayment sheets have a sticky adhesive layer
D5147 Test Methods for Sampling and Testing Modified
which is exposed by removal of a protective sheet. The top
Bituminous Sheet Material
surface is suitable to work on during the application of the
E96/E96M Test Methods forWaterVaporTransmission of
exposed roofing.
Materials
1.3 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
3. Terminology
only.
3.1 Definitions—For definitions of terms used in this speci-
1.4 The following safety hazards caveat pertains to the test
fication, refer to Terminology D1079.
methods portion, Section 7, of this standard. This standard
3.2 Definitions of Terms Specific to This Standard:
does not purport to address all of the safety concerns, if any,
3.2.1 lot—for the purpose of sampling, a lot shall consist of
associated with its use. It is the responsibility of the user of this
all material manufactured in one production run (not to exceed
standard to establish appropriate safety and health practices
24 h) using the same source of raw materials.
and determine the applicability of regulatory limitations prior
to use.
4. Workmanship, Finish, and Appearance
4.1 The underlayment sheet shall be supplied in roll form.
2. Referenced Documents
2 4.2 The underlayment sheet shall be substantially uniform
2.1 ASTM Standards:
in thickness and appearance. It shall be free of visible defects
D228 Test Methods for Sampling, Testing, andAnalysis of
such as holes, ragged or untrue edges, breaks, cracks, tears,
Asphalt Roll Roofing, Cap Sheets, and Shingles Used in
protuberances, and indentations, except for those perforations
Roofing and Waterproofing
or protuberances which are intentional.
D903 Test Method for Peel or Stripping Strength ofAdhe-
4.3 The surface of the underlayment sheet shall be designed
sive Bonds
to provide traction and slip resistance to the applicator.
D1079 Terminology Relating to Roofing and Waterproof-
ing
NOTE 1—The intent of 4.3 is to recognize that surface slipperiness is
D1204 Test Method for Linear Dimensional Changes of important when working on a roof and, while no test method is specified
in this standard, several methods for assessing the relative slipperiness of
surfaces are available. It is the further intent of this paragraph to ensure
that, whatever method is used, the friction coefficient or resistance to
1
This specification is under the jurisdiction of ASTM Committee D08 on
slipping of the surface of these products should be at least as great as
RoofingandWaterproofingandisthedirectresponsibilityofSubcommitteeD08.02
asphalt-saturated felt shingle underlayment tested under the same condi-
on Prepared Roofings, Shingles and Siding Materials.
tions of temperature and wetness as agreed between purchaser and seller.
Current edition approved May 1, 2008. Published May 2008. Originally
approved in 1990. Last previous edition approved in 2001 as D1970–01.
4.4 Sheet sections shall be suitable for joining by the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
manufacturer’s recommended procedure. The entire lower
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
surface of the underlayment sheet shall be capable of being
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. fully adhered to the roof deck.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1970–08
5. Physical Requirements length of the sample may be reduced to 100 mm (4 in.) 65%
if necessary to avoid limitations imposed by dimensions of the
5.1 The underlayment sheet shall conform to the physical
test machine.
requirements prescribed in Table 1.
7.3.2 Procedure:
5.2 The
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D1970–01 Designation: D 1970 – 08
Standard Specification for
Self-Adhering Polymer Modified Bituminous Sheet Materials
Used as Steep Roofing Underlayment for Ice Dam
1
Protection
This standard is issued under the fixed designation D1970; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript 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. Scope
1.1 This specification covers polymer modified bituminous sheet materials intended for use as underlayment on roof eaves, or
valleys, or both, to prevent leakage of shingle, tile, or metal roofs from water back-up due to ice dams.
1.2 These underlayment sheets have a sticky adhesive layer which is exposed by removal of a protective sheet.The top surface
is suitable to work on during the application of the exposed roofing.
1.3The values stated in SI units are to be regarded as standard.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 The following safety hazards caveat pertains to the test methods portion, Section 7, of this standard. 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D228Test Methods forAsphalt Roll Roofing, Cap Sheets, and Shingles Test Methods for Sampling, Testing, andAnalysis of
Asphalt Roll Roofing, Cap Sheets, and Shingles Used in Roofing and Waterproofing
D903 Test Method for Peel or Stripping Strength of Adhesive Bonds
2
D1079Terminology Relating to Roofing, Waterproofing, and Bituminous Materials Terminology Relating to Roofing and
Waterproofing
D1204 Test Method for Linear Dimensional Changes of Nonrigid Thermoplastic Sheeting or Film at Elevated Temperature
D2523 Practice for Testing Load-Strain Properties of Roofing Membranes
D4073 Test Method for Tensile-Tear Strength of Bituminous Roofing Membranes
D5147 Test Methods for Sampling and Testing Modified Bituminous Sheet Material
E96/E96M Test Methods for Water Vapor Transmission of Materials
3. Terminology
3.1 Definitions—For definitions of terms used in this specification, refer to Terminology D1079.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 lot—for the purpose of sampling, a lot shall consist of all material manufactured in one production run (not to exceed 24
h) using the same source of raw materials.
4. Workmanship, Finish, and Appearance
4.1 The underlayment sheet shall be supplied in roll form.
4.2 The underlayment sheet shall be substantially uniform in thickness and appearance. It shall be free of visible defects such
1
This specification is under the jurisdiction of ASTM Committee D08 on Roofing, Waterproofing, and Bituminous Materials and is the direct responsibilityof
Subcommittee D08.02 on Prepared Roofings, Shingles, and Siding Materials .
Current edition approved Sept. 10, 2001. Published November 2001. Originally published as D1970–90. Last previous edition D1970–00.
1
ThisspecificationisunderthejurisdictionofASTMCommitteeD08onRoofingandWaterproofingandisthedirectresponsibilityofSubcommitteeD08.02onPrepared
Roofings, Shingles and Siding Materials.
Current edition approved May 1, 2008. Published May 2008. Originally approved in 1990. Last previous edition approved in 2001 as D1970–01.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
, Vol 04.04.volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D1970–08
as holes, ragged or untrue edges, breaks, cracks, tears, protuberances, and indentations, except for those perforations or
protuberances which are intentional.
4.3 The surface of the underlayment sheet shall be designed to provide traction and slip resistance to the applicator.
NOTE 1—The intent of 4.3 is to recognize that surface slipperiness is important when working on a roof and, while no test method is specified
...
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