ASTM D4869-88(1993)e1

Standard Specification for Asphalt-Saturated Organic Felt Underlayment Used in Steep Slope Roofing

SCOPE
1.1 This specification covers asphalt-saturated organic felt for use as an underlayment with steep slope roofing.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 The objective of this standard 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.
1.4 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 problems, 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: 09-Feb-2002
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: D08 - Roofing and Waterproofing
• Drafting Committee: D08.02 - Steep Roofing Products and Assemblies

Relations

• Replaced By: ASTM D4869-02 - Standard Specification for Asphalt-Saturated Organic Felt Underlayment Used in Steep Slope Roofing
• Effective Date: 10-Feb-2002

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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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.
e1
Designation: D 4869 – 88 (Reapproved 1993)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Asphalt-Saturated Organic Felt Shingle Underlayment Used
in Roofing
This standard is issued under the fixed designation D 4869; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Keywords were added in May 1993.
1. Scope 5. Materials and Manufacture
1.1 This specification covers asphalt-saturated organic felt 5.1 In the process of manufacture, a single thickness of
shingle underlayment for use as an underlayment with asphalt organic dry felt shall be uniformly saturated with an asphaltic
shingles. saturant.
1.2 The values stated in inch-pound units are to be regarded 5.2 The felt shall be produced principally from organic
as the standard. fibers. The surface of the felt shall be uniform and relatively
1.3 The following safety hazards caveat pertains only to the smooth. Upon splitting or tearing on the bias, the felt shall
test method portion, Section 8, of this specification: This appear free of lumps or particles of foreign substances.
standard does not purport to address all of the safety problems,
6. Physical Requirements
if any, associated with its use. It is the responsibility of the user
6.1 The material shall conform to the physical requirements
of this standard to establish appropriate safety and health
prescribed in Table 1 and the dimensions and masses pre-
practices and determine the applicability of regulatory limita-
scribed in Table 2.
tions prior to use.
6.2 The finished product shall not crack nor be so sticky as
2. Referenced Documents
to cause tearing or other damage upon being unrolled at
temperatures between 50 and 140°F (10 and 60°C).
2.1 ASTM Standards:
6.3 The finished product shall pass the water shower expo-
D 146 Test Methods for Sampling and Testing Bitumen-
sure test described in 8.3, indicating resistance to liquid water
Saturated Felts and Woven Fabrics for Roofing and Wa-
transmission.
terproofing
D 1079 Terminology Relating to Roofing, Waterproofing,
7. Workmanship, Finish, and Appearance
and Bituminous Materials
7.1 The felt shall be thoroughly and uniformly saturated,
D 1922 Test Method for Propagation Tear Resistance of
3 and shall show no unsaturated spots at any point upon cutting
Plastic Film and Thin Sheeting by Pendulum Method
2-in. (50-mm) wide strips at random across the entire sheet and
E 96 Test Methods for Water Vapor Transmission of Mate-
4 splitting them open for their full length.
rials
7.2 The saturated felt may be surfaced lightly on one side
3. Terminology with talc or other finely comminuted mineral material to
prevent sticking in the roll.
3.1 Definitions—For definitions of terms used in this speci-
7.3 The finished material shall be free of visible external
fication, refer to Terminology D 1079.
defects, such as holes, ragged or untrue edges, breaks, cracks,
4. Classification tears, protuberances, and indentations.
4.1 Asphalt saturated felts covered by this specification are
8. Sampling and Test Method
of two types:
8.1 Sample the material and determine the properties enu-
4.1.1 Type I—Shingle Underlayment, and
merated in this specification in accordance with Test Methods
4.1.2 Type II—Heavy Duty Shingle Underlayment.
D 146, E 96 (Procedure A), and D1922.
8.2 Determine the saturation percent by dividing the mass of
1 the saturant by the mass of the desaturated (dry) felt, and
This specification is under the jurisdiction of ASTM Committee D-8 on
Roofing, Waterproofing, and Bituminous Materials and is the direct responsibility of multiply by 100.
Subcommittee D08.02 on Prepared Roofings, Shingles, and Siding Materials.
8.3 Determine the resistance to liquid water transmission by
Current edition approved Nov. 25, 1988. Published January 1988.
the following test method:
Annual Book of ASTM Standards, Vol 04.04.
8.3.1 Scope—The purpose of this test method is to indicate
Annual Book of ASTM Standards, Vol 08.01.
Annual Book of ASTM Standards, Vol 04.06. the resistance of the material to transmission of liquid water
D 4869
TABLE 1 Physical Requirements
Type I Type II
Tear strength, min, 77 6 2°F (25 6 1°C) lbf (N) 0.44 lbf 0.88 lbf
(in any direction) (2 N) (4 N)
Pliability at 77 6 2°F (256 1°C), the ten strips 0.50 in. 0.75 in.
tested shall not crack when bent 90° at a uniform (12.7 mm) (19.1 mm)
speed over a rounded corner of radius
Loss on heating at 221°F (105°C) for 5 h, max, % 4 4
Water vapor transmission, min, permeance, perm, 5 (287) 3 (172)
−1 −1 −2
(ng·Pa ·s ·m )
Liquid water transmission test Pass Pass
TABLE 2 Dimensions and Masses
Type I Type II
A A
Width of the roll, in. (mm) 36 (914) 6 0.7 % 36 (914) 6 0.7 %
2 2 A A
Area of the roll, min, ft (m ) 432 (40.13) 432 (40.13)
Net mass of saturated felt, min, 8.0 (390) 20.0 (976)
2 2
lb/100 ft (g/m )
2 2
Mass of saturant, min, lb/100 ft (g/m ) 4 (195) 10.8 (527)
Mass of desaturated felt, min, lb/100 4.0 (195) 9.0 (439)
2 2
ft (g/m )
Ash, max, desaturated felt mass, % 10.0 10.0
Saturation, min, % 100.0 120.0
Moisture, %, max, at time of 2.0 2.0
manufacture
FIG. 1 Water Shower Exposure Test for Shingle Underlayment
A
Or as agreed upon between purchaser and seller.
8.3.4.2 After sample preparation, condition the board at 70
and visible deterioratio
...