ASTM D4869-05e1
(Specification)Standard Specification for Asphalt-Saturated Organic Felt Underlayment Used in Steep Slope Roofing
Standard Specification for Asphalt-Saturated Organic Felt Underlayment Used in Steep Slope Roofing
ABSTRACT
This specification covers asphalt-saturated organic felt for use as an underlayment in steep slope roofing. The objective of this specification is to provide a finished product that will lie flat and resist wrinkling, puckering, and shrinking when left exposed to the sun, rain, frost, or dew for a period of two weeks after application. In the process of manufacture, a single thickness of organic dry felt shall be uniformly saturated with an asphaltic saturant and the felt shall be produced principally from organic fibers. The surface of the felt shall be uniform and relatively smooth and upon splitting or tearing on the bias, the felt shall appear free of lumps or particles of foreign substances. The material shall conform to the prescribed physical requirements such as tear strength, pliability, loss on heating, liquid water transmission, breaking strength, and dimensional stability, and to the specified dimension and mass requirements such as roll width, roll area, net mass of saturated felt, net mass of desaturated felt, saturation, moisture, and saturating efficiency. The finished product shall not crack nor be so sticky as to cause tearing or other damage upon being unrolled. The following tests shall be taken: (1) determination of saturation percent of felt, (2) determination of resistance to liquid water transmission using water shower exposure test, and (3) test for dimensional stability to low and high humidity. The water shower exposure test for underlayment is illustrated.
SCOPE
1.1 This specification covers asphalt-saturated organic felt for use as an underlayment with steep slope roofing.
1.2 The objective of this specification is to provide a finished product that will lie flat and resist wrinkling, puckering, and shrinking when left exposed to the sun, rain, frost, or dew for a period of two weeks after application.
1.3 The values stated in SI unts are to be regarded as the standard. The values given in parentheses are for information only.
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 limitations prior to use.
General Information
Relations
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
´1
Designation: D4869 – 05
Standard Specification for
Asphalt-Saturated Organic Felt Underlayment Used in Steep
1
Slope Roofing
This standard is issued under the fixed designation D4869; 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
´ NOTE—Fig. 1 was corrected editorially in May 2006.
1. Scope D1922 Test Method for Propagation Tear Resistance of
Plastic Film and Thin Sheeting by Pendulum Method
1.1 This specification covers asphalt-saturated organic felt
D6136 Test Method for Kerosine Number of Unsaturated
for use as an underlayment with steep slope roofing.
(Dry) Felt by Vacuum Method
1.2 The objective of this specification is to provide a
F1087 Test Method for Linear Dimensional Stability of a
finished product that will lie flat and resist wrinkling, pucker-
Gasket Material to Moisture
ing, and shrinking when left exposed to the sun, rain, frost, or
dew for a period of two weeks after application.
3. Terminology
1.3 The values stated in SI units are to be regarded as
3.1 Definitions—For definitions of terms used in this speci-
standard. The values given in parentheses are for information
fication, refer to Terminology D1079.
only.
1.4 The following safety hazards caveat pertains only to the
4. Classification
test method portion, Section 8, of this specification: This
4.1 Asphalt-saturated felts covered by this specification are
standard does not purport to address all of the safety concerns,
of four types:
if any, associated with its use. It is the responsibility of the user
4.1.1 Type I—#8 Underlayment,
of this standard to establish appropriate safety and health
4.1.2 Type II—#13 Underlayment,
practices and determine the applicability of regulatory limita-
4.1.3 Type III—#20 Underlayment, and
tions prior to use.
4.1.4 Type IV—#26 Underlayment.
2. Referenced Documents
5. Materials and Manufacture
2
2.1 ASTM Standards:
5.1 In the process of manufacture, a single thickness of
D70 Test Method for Density of Semi-Solid Bituminous
organic dry felt shall be uniformly saturated with an asphaltic
Materials (Pycnometer Method)
saturant.
D146 Test Methods for Sampling and Testing Bitumen-
5.2 The felt shall be produced principally from organic
Saturated Felts and Woven Fabrics for Roofing and Wa-
fibers. The surface of the felt shall be uniform and relatively
terproofing
smooth. Upon splitting or tearing on the bias, the felt shall
D228 Test Methods for Sampling, Testing, and Analysis of
appear free of lumps or particles of foreign substances.
Asphalt Roll Roofing, Cap Sheets, and Shingles Used in
Roofing and Waterproofing
6. Physical Requirements
D1079 Terminology Relating to Roofing andWaterproofing
6.1 The material shall conform to the physical requirements
in accordance with Table 1 and the dimensions and masses in
1
This specification is under the jurisdiction of ASTM Committee D08 on
accordance with Table 2.
Roofing andWaterproofing and is the direct responsibility of Subcommittee D08.02
6.2 The finished product shall not crack nor be so sticky as
on Prepared Roofings, Shingles, and Siding Materials.
to cause tearing or other damage upon being unrolled at
Current edition approved Jan. 1, 2005. Published January 2005. Originally
temperatures between 0 and 60°C (32 and 140°F).
approved in 2002. Last previous edition approved in 2004 as D4869 – 04. DOI:
10.1520/D4869-05E01.
6.3 The finished product shall pass the water shower expo-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
sure test in accordance with 8.3, indicating resistance to liquid
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
water transmission.
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 ----------------------
´1
D4869 – 05
TABLE 1 Physical Requirements
Type I Type II Type III Type IV
Tear strength, 23 6 2°C (73 6 4°F) min, N (lbf) 2.0 2.0 4.0 4.0
(both cross and with direction of sheet) (0.45) (0.45) (0.90) (0.90)
Pliability at 23 6 2°C (73 6 4°F). Ten strips 12.7 mm 12.7 mm 19.1 mm 19.1 mm
tested shall not crack when bent 90° at a (0.50 in.) (0.50 in.) (0.75 in.) (0.75 in.)
uniform speed over a rounded corner of
radius in table for each type.
Loss on heating at 105°C (221°F) for 5 h max, % 6 6 6 6
Liquid water transmission test Pass Pass Pass Pass
Breaking strength at 23 6 2°C (73 6 4°F), kN/m 5.3 (30) 5.3 (30) 7.0 (40) 7.0 (40)
(lbf/in.), min MD and CD 2.6 (15) 2.6 (15) 3.5 (20) 3.5 (20)
Dimensional st
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.