ASTM-D1970/D1970M:2021 Edition(Redline)

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D1970/D1970M-21 Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection (Redline)

Published By	Publication Date	Number of Pages
ASTM	2021

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Categories: 91.100.60 - Thermal and sound insulating materials, ASTM

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Description

ASTM D1970/D1970M-21

Redline Standard: Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection

ASTM D1970/D1970M

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 Table of Contents:

1.4 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 nonconformance with the standard.

1.5 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.

1.6 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.

Keywords

ice dam protections; polymer-modifieds; self-adherings; steep roofings; underlayments;

ICS Code

ICS Number Code 91.100.60 (Thermal and sound insulating materials)

DOI: 10.1520/D1970_D1970M-21

Additional information

Test Methods	7
Thickness	7.2
Physical Requirements	5
Waterproof Integrity of Side Lap Seam (Head of Water Test)	7.10
Sampling	6
Packaging and Package Marking	10
Capability to Seal Around Nail (Head of Water Test)	7.9
Thermal Stability	7.5
Workmanship, Finish, and Appearance	4
Flexibility at –29 °C [–20 °F]	7.6
Maximum Load and Elongation at Break	7.3
Scope	1
Rejection and Rehearing	9
Conditioning	7.1
Referenced Documents	2
Adhesion to Plywood	7.4
Inspection	8
Moisture Vapor Permeability	7.8
Keywords	11
Terminology	3
Tear Resistance	7.7
	Section
ICS Codes	91.100.60 - Thermal and sound insulating materials