ASTM D6757/D6757M-16a

Standard Specification for Underlayment Felt Containing Inorganic Fibers Used in Steep-Slope Roofing

ABSTRACT
This specification covers inorganic fiber-reinforced organic felt, and inorganic fiber-based asphaltic and nonasphaltic felt underlayments for use as underlayment with steep-slope roofing products. The intent of this specification is to provide criteria for producing and evaluating underlayments with a significantly reduced tendency to wrinkle before or after the installation of steep roofing products. Materials shall be sampled and tested suitably to examine their conformance with performance requirements such as tear strength, pliability, behavior on heating, liquid water transmission, dimensional stability at low to high humidity conditions, and elongation.
SCOPE
1.1 This specification covers (1) inorganic fiber-reinforced organic felt underlayment and (2) inorganic fiber-based felt for use as underlayment with steep-slope roofing products. The intent of this specification is to provide criteria for producing and evaluating underlayments with a significantly reduced tendency to wrinkle before or after the installation of steep roofing products.  
1.2 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.  
1.3 The following safety hazards caveat pertains only to the test method portion, Section 8, of this specification: 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 requirements prior to use.

General Information

• Status: Historical
• Publication Date: 30-Jun-2016
• ICS: 91.060.20 - Roofs
• Technical Committee: D08 - Roofing and Waterproofing
• Drafting Committee: D08.02 - Steep Roofing Products and Assemblies

Relations

• Replaces: ASTM D6757/D6757M-16 - Standard Specification for Underlayment Felt Containing Inorganic Fibers Used in Steep-Slope Roofing
• Effective Date: 01-Jul-2016

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6757/D6757M −16a
Standard Specification for
Underlayment Felt Containing Inorganic Fibers Used in
1
Steep-Slope Roofing
This standard is issued under the fixed designation D6757/D6757M; 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 ganic Felt Underlayment Used in Steep Slope Roofing
F1087 Test Method for Linear Dimensional Stability of a
1.1 This specification covers (1) inorganic fiber-reinforced
Gasket Material to Moisture
organic felt underlayment and (2) inorganic fiber-based felt for
use as underlayment with steep-slope roofing products. The
3. Terminology
intent of this specification is to provide criteria for producing
3.1 Definitions—For definitions of terms used in this
and evaluating underlayments with a significantly reduced
specification, refer to Terminology D1079.
tendency to wrinkle before or after the installation of steep
roofing products.
4. Classification
1.2 The values stated in either SI units or inch-pound units
4.1 Organicfeltsthatarereinforcedwithinorganicfibersare
are to be regarded separately as standard. The values stated in
covered by this specification.
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining 4.2 Inorganic fiber-based asphaltic and nonasphaltic felts
are covered by this specification.
values from the two systems may result in non-conformance
with the standard.
5. Materials and Manufacture
1.3 The following safety hazards caveat pertains only to the
5.1 In the process of manufacture, a single thickness of
test method portion, Section 8, of this specification: This
inorganic mat or organic felt that is reinforced with inorganic
standard does not purport to address all of the safety concerns,
fibers shall be uniformly saturated or coated.
if any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health
6. Performance Requirements
practices and determine the applicability of regulatory require-
ments prior to use. 6.1 The material shall conform to the physical requirements
prescribed in Table 1.
2. Referenced Documents
6.2 The finished product shall not crack nor be so sticky as
2
2.1 ASTM Standards:
to cause tearing or other damage upon being unrolled at
D146/D146M Test Methods for Sampling and Testing
temperatures between –1 and 60°C [30 and 140°F]. The
Bitumen-Saturated Felts and Woven Fabrics for Roofing
finished product shall pass the water shower exposure test in
and Waterproofing
accordance with 8.1.4, indicating resistance to liquid water
D228/D228M Test Methods for Sampling, Testing, and
transmission.
Analysis of Asphalt Roll Roofing, Cap Sheets, and
7. Dimensions, Masses, Workmanship, Finish, and
Shingles Used in Roofing and Waterproofing
D1079 Terminology Relating to Roofing and Waterproofing Appearance
D4869/D4869M Specification for Asphalt-Saturated Or-
7.1 Dimensions and masses to be agreed upon between
buyer and seller.
1
7.2 The finished material shall be free of visible external
This specification is under the jurisdiction of ASTM Committee D08 on
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.02
defects, such as holes, ragged or untrue edges, breaks, cracks,
on Steep Roofing Products and Assemblies.
tears, bulges, and indentations.
Current edition approved July 1, 2016. Published July 2016. Originally approved
in 2002. Last previous edition approved in 2016 as D6757/D6757M – 16. DOI:
8. Sampling and Test Methods
10.1520/D6757_D6757M-16A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
8.1 Sample the material and determine the properties enu-
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
merated in this specification in accordance with Test Methods
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. D146/D146M.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6757/D6757M−16a
TABLE 1 Performance Requirements
L 2 L
h l
∆L 5 3100 (1)
%
Tear strength, min at 23 ± 2°C, 4.0, [0.88] (in any L
l
[73 ± 4°F], N, [lbf] direction)
Pliability at 23 ± 2°C, [73 ± 4°F], the ten pass where:
strips tested shall not crack when
L = low humidity length of specimen,
l
bent 90° at a uniform speed over a
L = high humidity length of specimen, and
19 mm [0.75 in.] radius corner in 2 s
h
Behavior (loss) on heating at 105°C 4
∆L = the percent change in length from low to high
%
[221°F] for 5 h, max, %
...

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: D6757/D6757M − 16 D6757/D6757M − 16a
Standard Specification for
Underlayment Felt Containing Inorganic Fibers Used in
1
Steep-Slope Roofing
This standard is issued under the fixed designation D6757/D6757M; 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 (1) inorganic fiber-reinforced organic felt underlayment and (2) inorganic fiber-based felt for use
as underlayment with steep-slope roofing products. The intent of this specification is to provide criteria for producing and
evaluating underlayments with a significantly reduced tendency to wrinkle before or after the installation of steep roofing products.
1.2 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.
1.3 The following safety hazards caveat pertains only to the test method portion, Section 8, of this specification: 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 requirements prior to
use.
2. Referenced Documents
2
2.1 ASTM Standards:
D146D146/D146M Test Methods for Sampling and Testing Bitumen-Saturated Felts and Woven Fabrics for Roofing and
Waterproofing
D228D228/D228M Test Methods for Sampling, Testing, and Analysis of Asphalt Roll Roofing, Cap Sheets, and Shingles Used
in Roofing and Waterproofing
D1079 Terminology Relating to Roofing and Waterproofing
D4869D4869/D4869M Specification for Asphalt-Saturated Organic Felt Underlayment Used in Steep Slope Roofing
F1087 Test Method for Linear Dimensional Stability of a Gasket Material to Moisture
3. Terminology
3.1 Definitions—For definitions of terms used in this specification, refer to Terminology D1079.
4. Classification
4.1 Organic felts that are reinforced with inorganic fibers are covered by this specification.
4.2 Inorganic fiber-based asphaltic and nonasphaltic felts are covered by this specification.
5. Materials and Manufacture
5.1 In the process of manufacture, a single thickness of inorganic mat or organic felt that is reinforced with inorganic fibers shall
be uniformly saturated or coated.
6. Performance Requirements
6.1 The material shall conform to the physical requirements prescribed in Table 1.
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 Jan. 1, 2016July 1, 2016. Published January 2016July 2016. Originally approved in 2002. Last previous edition approved in 20132016 as
D6757 – 07 (2013).D6757/D6757M – 16. DOI: 10.1520/D6757_D6757M-16.10.1520/D6757_D6757M-16A.
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 ----------------------
D6757/D6757M − 16a
TABLE 1 Performance Requirements
Tear strength, min at 23 ± 2°C, 4.0, [0.88] (in any
[73 ± 4°F], N, [lbf] direction)
Pliability at 23 ± 2°C, [73 ± 4°F], the ten pass
strips tested shall not crack when
bent 90° at a uniform speed over a
19 mm [0.75 in.] radius corner in 2 s
Behavior (loss) on heating at 105°C 4
[221°F] for 5 h, max, %
Liquid water transmission test pass
Dimensional stability, 1.65
low humidity to high humidity,
max elongation, %
6.2 The finished product shall not crack nor be so sticky as to cause tearing or other damage upon being unrolled at temperatures
between –1 and 60°C [30 and 140°F]. The finished product shall pass the water shower exposure test in accordance with 8.1.4,
indicating resistance to liquid water transmission.
7. Dimensions, Masses, Workmanship, Finish, and Appearance
7.1 Dimensions and masses to be agreed upon between buyer
...