ASTM D1970/D1970M-11

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 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.

General Information

• Status: Historical
• Publication Date: 14-Jun-2011
• 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 D1970-09 - Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection
• Effective Date: 15-Jun-2011
• Replaced By: ASTM D1970/D1970M-13 - Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection
• Effective Date: 15-Jun-2013
• Referred By: ASTM E2266-22 - Standard Guide for Design and Construction of Low-Rise Frame Building Wall Systems to Resist Water Intrusion
• Effective Date: 15-Jun-2011
• Referred By: ASTM E2112-23 - Standard Practice for Installation of Exterior Windows, Doors and Skylights
• Effective Date: 15-Jun-2011

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 −11
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 D1079Terminology Relating to Roofing and Waterproofing
D1204Test Method for Linear Dimensional Changes of
1.1 This specification covers polymer modified bituminous
Nonrigid Thermoplastic Sheeting or Film at Elevated
sheetmaterialsintendedforuseasunderlaymentonroofeaves,
Temperature
or valleys, or both, to prevent leakage of shingle, tile, or metal
D2523Practice for Testing Load-Strain Properties of Roof-
roofs from water back-up due to ice dams.
ing Membranes
1.2 These underlayment sheets have a sticky adhesive layer
D4073TestMethodforTensile-TearStrengthofBituminous
which is exposed by removal of a protective sheet. The top
Roofing Membranes
surface is suitable to work on during the application of the
D5147Test Methods for Sampling and Testing Modified
exposed roofing.
Bituminous Sheet Material
1.3 The values stated in either SI units or inch-pound units E96/E96MTest Methods for Water Vapor Transmission of
Materials
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 3. Terminology
values from the two systems may result in non-conformance
3.1 Definitions—For definitions of terms used in this
with the standard.
specification, refer to Terminology D1079.
1.4 The following safety hazards caveat pertains to the test
3.2 Definitions of Terms Specific to This Standard:
methodsportion,Section7,ofthisstandard.This standard does
3.2.1 lot—for the purpose of sampling, a lot shall consist of
not purport to address all of the safety concerns, if any,
all material manufactured in one production run (not to exceed
associated with its use. It is the responsibility of the user of this
24 h) using the same source of raw materials.
standard to establish appropriate safety and health practices
and determine the applicability of regulatory limitations prior
4. Workmanship, Finish, and Appearance
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.
NOTE 1—The intent of 4.3 is to recognize that surface slipperiness is
1 important when working on a roof and, while no test method is specified
This specification is under the jurisdiction of ASTM Committee D08 on
in this standard, several methods for assessing the relative slipperiness of
Roofing andWaterproofing and is the direct responsibility of Subcommittee D08.02
surfaces are available. It is the further intent of this paragraph to ensure
on Steep Roofing Products and Assemblies.
that, whatever method is used, the friction coefficient or resistance to
Current edition approved June 15, 2011. Published June 2011. Originally
approved in 1990. Last previous edition approved in 2009 as D1970–09. DOI: slipping of the surface of these products should be at least as great as
10.1520/D1970_D1970M-11. asphalt-saturated felt shingle underlayment tested under the same condi-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
tions of temperature and wetness as agreed between purchaser and seller.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
4.4 Sheet sections shall be suitable for joining by the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. manufacturer’s recommended procedure. The entire lower
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D1970/D1970M−11
surface of the underlayment sheet shall be capable of being length of the sample may be reduced to 100 mm [4 in.] 65%
fully adhered to the roof d
...

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:D1970–09 Designation: D1970/D1970M – 11
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.
1.3The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions
to inch-pound units that are provided for information only and are not considered standard.
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 87, 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. Types
4.1Products covered by this specification are of two types: Type 1, Standard Ice-Dam Underlayment; and Type 2, HT-Ice Dam
Underlayment.
1
ThisspecificationisunderthejurisdictionofASTMCommitteeD08onRoofingandWaterproofingandisthedirectresponsibilityofSubcommitteeD08.02onPrepared
Roofings, Shingles and Siding Materials.
Current edition approved Jan. 1, 2009. Published January 2009. Originally approved in 1990. Last previous edition approved in 2008 as D1970–08. DOI:
10.1520/D1970-09.on Steep Roofing Products and Assemblies.
Current edition approved June 15, 2011. Published June 2011. Originally approved in 1990. Last previous edition approved in 2009 as D1970–09. DOI:
10.1520/D1970_D1970M-11.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] 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.
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D1970/D1970M – 11
5.Workmanship, Finish, and Appearance
5.1The4.1 The underlayment sheet shall be supplied in roll form.
5.2The4.2 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.
5.34.3 The surface of the underlayment sheet shall be designed to provide tracti
...