ASTM D1970/D1970M-17a

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 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 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-Oct-2017
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: D08 - Roofing and Waterproofing
• Drafting Committee: D08.02 - Steep Roofing Products and Assemblies

Relations

• Replaces: ASTM D1970/D1970M-17 - Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection
• Effective Date: 01-Nov-2017
• Replaced By: ASTM D1970/D1970M-18 - Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection
• Effective Date: 01-Nov-2018
• Referred By: ASTM E2112-23 - Standard Practice for Installation of Exterior Windows, Doors and Skylights
• Effective Date: 01-Nov-2017
• Referred By: ASTM E2266-22 - Standard Guide for Design and Construction of Low-Rise Frame Building Wall Systems to Resist Water Intrusion
• Effective Date: 01-Nov-2017

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D1970/D1970M −17a
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/D1970M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Analysis of Asphalt Roll Roofing, Cap Sheets, and
Shingles Used in Roofing and Waterproofing
1.1 This specification covers polymer modified bituminous
D903Test Method for Peel or Stripping Strength of Adhe-
sheetmaterialsintendedforuseasunderlaymentonroofeaves,
sive Bonds
or valleys, or both, to prevent leakage of shingle, tile, or metal
D1079Terminology Relating to Roofing and Waterproofing
roofs from water back-up due to ice dams.
D1204Test Method for Linear Dimensional Changes of
1.2 These underlayment sheets have a sticky adhesive layer
Nonrigid Thermoplastic Sheeting or Film at Elevated
which is exposed by removal of a protective sheet. The top
Temperature
surface is suitable to work on during the application of the
D2523Practice for Testing Load-Strain Properties of Roof-
exposed roofing.
ing Membranes
1.3 The values stated in either SI units or inch-pound units D4073TestMethodforTensile-TearStrengthofBituminous
Roofing Membranes
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each D5147/D5147MTest Methods for Sampling and Testing
Modified Bituminous Sheet Material
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance D7349/D7349MTest Method for Determining the Capabil-
ityofRoofingandWaterproofingMaterialstoSealaround
with the standard.
Fasteners
1.4 This standard does not purport to address all of the
E96/E96MTest Methods for Water Vapor Transmission of
safety concerns, if any, associated with its use. It is the
Materials
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3. Terminology
mine the applicability of regulatory limitations prior to use.
3.1 Definitions—For definitions of terms used in this
1.5 This international standard was developed in accor-
specification, refer to Terminology D1079.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3.2 Definitions of Terms Specific to This Standard:
Development of International Standards, Guides and Recom-
3.2.1 lot—for the purpose of sampling, a lot shall consist of
mendations issued by the World Trade Organization Technical
all material manufactured in one production run (not to exceed
Barriers to Trade (TBT) Committee.
24 h) using the same source of raw materials.
2. Referenced Documents
4. Workmanship, Finish, and Appearance
2
2.1 ASTM Standards:
4.1 The underlayment sheet shall be supplied in roll form.
D228/D228MTest Methods for Sampling, Testing, and
4.2 The underlayment sheet shall be substantially uniform
in thickness and appearance. It shall be free of visible defects
such as holes, ragged or untrue edges, breaks, cracks, tears,
1
This specification is under the jurisdiction of ASTM Committee D08 on
protuberances, and indentations, except for those perforations
RoofingandWaterproofingandisthedirectresponsibilityofSubcommitteeD08.02
on Steep Roofing Products and Assemblies.
or protuberances which are intentional.
Current edition approved Nov. 1, 2017. Published November 2017. Originally
4.3 Thesurfaceoftheunderlaymentsheetshallbedesigned
approved in 1990. Last previous edition approved in 2017 as D1970/D1970M–17.
DOI: 10.1520/D1970_D1970M-17A.
to provide traction and slip resistance to the applicator.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 1—The intent of 4.3 is to recognize that surface slipperiness is
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on important when working on a roof and, while no test method is specified
the ASTM website. in this standard, several methods for assessing the relative slipperiness of
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D1970/D1970M−17a
surfaces are available. It is the further intent of this paragraph to ensure
7.3.1.1 Prepare five specimens from each sample roll in
that, whatever method is used, the friction coefficient or resistance to
both the longitudinal and transverse direction
...

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. 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/D1970M − 17 D1970/D1970M − 17a
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/D1970M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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.
1.3 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 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D228/D228M Test Methods for Sampling, Testing, and Analysis of Asphalt Roll Roofing, Cap Sheets, and Shingles Used in
Roofing and Waterproofing
D903 Test Method for Peel or Stripping Strength of Adhesive Bonds
D1079 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/D5147M Test Methods for Sampling and Testing Modified Bituminous Sheet Material
D7349/D7349M Test Method for Determining the Capability of Roofing and Waterproofing Materials to Seal around Fasteners
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.
1
This specification is under the jurisdiction of ASTM Committee D08 on Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.02 on Steep
Roofing Products and Assemblies.
Current edition approved May 1, 2017Nov. 1, 2017. Published May 2017November 2017. Originally approved in 1990. Last previous edition approved in 20162017 as
D1970/D1970M – 16.D1970/D1970M – 17. DOI: 10.1520/D1970_D1970M-17.10.1520/D1970_D1970M-17A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
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/D1970M − 17a
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
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 s
...