ASTM D226-05

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Designation: D 226 – 05
Standard Specification for
Asphalt-Saturated Organic Felt Used in Roofing and
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Waterproofing
This standard is issued under the fixed designation D 226; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Terminology
1.1 This specification covers asphalt-saturated organic felts, 3.1 Definitions—For definitions of terms used in this speci-
with or without perforations, intended to be used with asphalts fication, refer to Terminology D 1079.
conforming to the requirements of Specification D 312 in the 3.2 Definitions of Terms Specific to This Standard:
construction of built-up roofs, and with asphalts conforming to 3.2.1 lot—for the purpose of sampling, a lot shall consist of
the requirements of Specification D 449 in the construction of thesametypeandsizeofroofingfeltofferedfordeliveryatone
water proofing systems. time.
1.2 The values stated in SI units are to be regarded as the
4. Classification
standard. The values given in parentheses are for information
only. 4.1 Asphalt-saturated felts covered by this specification are
of two types:
1.3 The following safety hazards caveat pertains only to the
test method portion, Section 8, of this specification: This 4.1.1 Type I—Commonly called No. 15 asphalt felt.
4.1.2 Type II—Commonly called No. 30 asphalt felt.
standard does not purport to address all of the safety concerns,
if any, associated with its use. It is the responsibility of the user
5. Materials and Manufacture
of this standard to establish appropriate safety and health
5.1 In the process of manufacture a single thickness of dry
practices and determine the applicability of regulatory limita-
felt shall be saturated with an asphaltic saturant.
tions prior to use.
5.2 The felt shall be produced principally from organic
2. Referenced Documents
fibers. The surface of the felt shall be uniform and relatively
2
2.1 ASTM Standards: smooth. Upon splitting or tearing on the bias, the felt shall
appear reasonably free of lumps or particles of foreign sub-
D70 Test Method for Specific Gravity and Density of
Semi-Solid Bituminous Materials (Pycnometer Method) stances.
D 146 Test Methods for Sampling and Testing Bitumen-
6. Physical Requirements
Saturated Felts and Woven Fabrics for Roofing and Wa-
6.1 The material shall conform to the physical requirements
terproofing
prescribed in Table 1 and the dimensions and masses pre-
D 312 Specification for Asphalt Used in Roofing
scribed in Table 2.
D 449 Specification forAsphalt Used in Dampproofing and
6.2 The finished product shall not crack nor be so sticky as
Waterproofing
to cause tearing or other damage upon being unrolled at
D 727 Test Method for Kerosine Number of Roofing and
temperatures between 10 and 60°C (50 and 140°F).
Flooring Felt by the Vacuum Method
6.3 Perforated felts shall conform to the same requirements
D 1079 Terminology Relating to Roofing, Waterproofing,
as the plain type but shall also have uniformly spaced perfo-
and Bituminous Materials
rations.
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7. Workmanship, Finish, and Appearance
This specification is under the jurisdiction of ASTM Committee D08 on
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.04
7.1 The felt shall be thoroughly and uniformly saturated,
on Felts and Fabrics.
and shall show no unsaturated spots at any point upon cutting
Current edition approved June 15, 2005. Published July 2005. Originally
approved in 1925. Last previous edition approved in 1997 as D 226 – 97a.
50-mm (2-in.) wide strips at random across the entire sheet and
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
splitting them open for their full length.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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D226–05
TABLE 1 Physical Requirements of Asphalt-Saturated Roofing Felt
Type I Type II
Average breaking strength, min, kN/m (lbf/in.) of width:
With fiber grain 5.3 (30) 7.0 (40)
Across fiber grain 2.6 (15) 3.5 (20)
Pliability at 25°C (77°F)
1 3
The ten strips tested shall not crack when bent 90° 12.7-mm ( ⁄2-in.) radius 19.1-mm ( ⁄4-in.) radius
at a uniform speed over a rounded corner of:
Loss on heating at 105°C (221°F) for 5 h, max, % 4 4
TABLE 2 Dimensions and Masses of Asphalt-Saturated Roofing Felt
Type I Type II
Width of
...