ASTM D1970/D1970M-13
(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 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D1970/D1970M −13
StandardSpecification 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 Nonrigid Thermoplastic Sheeting or Film at Elevated
Temperature
1.1 This specification covers polymer modified bituminous
D2523Practice for Testing Load-Strain Properties of Roof-
sheetmaterialsintendedforuseasunderlaymentonroofeaves,
ing Membranes
or valleys, or both, to prevent leakage of shingle, tile, or metal
D4073TestMethodforTensile-TearStrengthofBituminous
roofs from water back-up due to ice dams.
Roofing Membranes
1.2 These underlayment sheets have a sticky adhesive layer
D5147Test 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/E96MTest Methods for Water Vapor Transmission of
exposed roofing.
Materials
1.3 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in 3. Terminology
each system may not be exact equivalents; therefore, each
3.1 Definitions—For definitions of terms used in this
system shall be used independently of the other. Combining
specification, refer to Terminology D1079.
values from the two systems may result in non-conformance
3.2 Definitions of Terms Specific to This Standard:
with the standard.
3.2.1 lot—for the purpose of sampling, a lot shall consist of
1.4 This standard does not purport to address all of the
all material manufactured in one production run (not to exceed
safety concerns, if any, associated with its use. It is the
24 h) using the same source of raw materials.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Workmanship, Finish, and Appearance
bility of regulatory limitations prior to use.
4.1 The underlayment sheet shall be supplied in roll form.
2. Referenced Documents
4.2 The underlayment sheet shall be substantially uniform
2
2.1 ASTM Standards:
in thickness and appearance. It shall be free of visible defects
D228Test Methods for Sampling, Testing, and Analysis 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.
D903Test Method for Peel or Stripping Strength of Adhe-
4.3 The surface of the underlayment sheet shall be designed
sive Bonds
to provide traction and slip resistance to the applicator.
D1079Terminology Relating to Roofing and Waterproofing
D1204Test Method for Linear Dimensional Changes of 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
in this standard, several methods for assessing the relative slipperiness of
surfaces are available. It is the further intent of this paragraph to ensure
1
This specification is under the jurisdiction of ASTM Committee D08 on
that, whatever method is used, the friction coefficient or resistance to
Roofing andWaterproofing and is the direct responsibility of Subcommittee D08.02
slipping of the surface of these products should be at least as great as
on Steep Roofing Products and Assemblies.
asphalt-saturated felt shingle underlayment tested under the same condi-
Current edition approved June 15, 2013. Published July 2013. Originally
tions of temperature and wetness as agreed between purchaser and seller.
approved in 1990. Last previous edition approved in 2011 as D1970–11. DOI:
10.1520/D1970_D1970M-13.
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/D1970M−13
5. Physical Requirements 7.3.2 Procedure:
7.3.2.1 Condition each specimen at least2hat23 6 2°C
5.1 The underlayment sheet shall conform to the ph
...
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 − 11 D1970/D1970M − 13
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 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:
D228 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 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.
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 June 15, 2011June 15, 2013. Published June 2011July 2013. Originally approved in 1990. Last previous edition approved in 20092011 as
D1970 – 09.D1970 – 11. DOI: 10.1520/D1970_D1970M-11.10.1520/D1970_D1970M-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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 − 13
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 slipperiness is 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 slipping of the surface of these products should be at least as great as asphalt-satu
...
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