ASTM D4601-04
(Specification)Standard Specification for Asphalt-Coated Glass Fiber Base Sheet Used in Roofing
Standard Specification for Asphalt-Coated Glass Fiber Base Sheet Used in Roofing
ABSTRACT
This specification covers the standards for asphalt impregnated and coated glass fiber base sheet intended for use as the first ply of built-up roofings. This sheets are also suitable for use as a vapor retarded under roof insulation or between multiple layers of roof insulation. The materials shall conform to the physical requirements, dimensions, and masses prescribed herein. The products shall not crack nor be too sticky as to cause damage upon being unrolled. The specimen shall also undergo testing to determine the following properties: breaking strength, moisture content, and pliability.
SCOPE
1.1 This specification covers asphalt impregnated and coated glass fiber base sheet, with or without perforations, for use as the first ply of the built-up roofing. When not perforated, this sheet is suitable for use as a vapor retarder, with a solid mopping of asphaltic material, under roof insulation or between multiple layers of roof insulation.
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D4601 – 04
Standard Specification for
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Asphalt-Coated Glass Fiber Base Sheet Used in Roofing
This standard is issued under the fixed designation D4601; 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.
This standard has been approved for use by agencies of the Department of Defense.
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TABLE 1 Physical Requirements
1. Scope
Description Type I Type II
1.1 This specification covers asphalt impregnated and
Breaking strength, minimum kN/m 3.9 (22) 7.7 (44)
coated glass fiber base sheet, with or without perforations, for
(lbf/in.) longitudinal and transverse
use as the first ply of the built-up roofing.When not perforated,
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Pliability, 13 mm ( ⁄2 in.) radius
this sheet is suitable for use as a vapor retarder, with a solid
Maximum failures, 10 specimens 0 0
mopping of asphaltic material, under roof insulation or be- A
To prevent the asphalt glass fiber base sheet from slipping from between the
jawsofthetensiletestingmachine,insertathinstripofsoftgasketrubberbetween
tween multiple layers of roof insulation.
the felt in each of the four jaw faces of the machine.
1.2 The values stated in SI units are to be regarded as the
standard. The values in parentheses are for information only.
5.2 Intheprocessofmanufacture,asinglethicknessofglass
2. Referenced Documents
fiber mat shall be impregnated with hot asphalt, coated on one
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2.1 ASTM Standards:
or both sides with a hot asphaltic material, and permitted to be
D146 Test Methods for Sampling and Testing Bitumen-
surfaced with mineral surfacing.
Saturated Felts and Woven Fabrics for Roofing and Wa-
5.3 The impregnating and coating material shall be a hot-
terproofing
applied asphalt permitted to be compounded with a mineral
D228 Test Methods for Sampling, Testing, and Analysis of
stabilizer.
Asphalt Roll Roofing, Cap Sheets, and Shingles Used in
5.4 The base sheet may be faced with a kraft paper on the
Roofing and Waterproofing
bottom side.
D1079 Terminology Relating to Roofing and Waterproofing
6. Physical Requirements, Dimensions, and Masses
3. Terminology
6.1 Thematerialshallconformtothephysicalrequirements,
3.1 Definitions—For definitions of terms used in this speci-
dimensions, and masses described in Table 1 and Table 2.It
fication, refer to Terminology D1079.
may have small pin holes throughout the sheet.
6.2 Perforated material shall conform to the physical re-
4. Classification
quirements, dimensions, and masses described in Tables 1-3.It
4.1 Asphalt impregnated and coated glass fiber base sheet,
may have small pin holes throughout the sheet.
Type I and Type II, are covered by this specification.
6.3 The finished product shall not crack nor be so sticky as
to cause tearing or other damage upon being unrolled at
5. Materials and Manufacture
temperatures between 4 and 60°C (40 and 140°F).
5.1 The mat shall be a thin, porous mat of uniformly
distributed glass fibers, with or without additional reinforcing 7. Workmanship, Finish, and Appearance
strands of glass yarn, and bonded with a water-resistant
7.1 The finished material shall be uniformly impregnated
resinous binder.
and coated with asphalt. It shall be free of visible defects such
as holes, ragged or untrue edges, breaks, cracks, tears, and
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This specification is under the jurisdiction of ASTM Committee D08 on
protrusions. This is not to exclude perforations for the specific
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.04
purpose of providing for venting of gases during application or
on Felts and Fabrics.
small pin holes.
Current edition approved Dec. 1, 2004. Published January 2005. Originally
approved in 1986. Last previous edition approved in 1998 as D4601 – 98. DOI:
8. Sampling and Test Methods
10.1520/D4601-04.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
8.1 Sample the material and determine the properties de-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
scribed in this specification in accordance with Test Methods
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. D228 unless otherwise indicated.
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D4601 – 04
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TABLE 2 Dimensions and Masses
Description Type I Type II
Width of roll, mm (in.) 914 (36) 6 0.7 % 914 (36) 6 0.7 %
or or
as agreed between buyer and seller as agreed between buyer and seller
Area of roll as agreed between buyer and seller as agreed between buyer and seller
2 2
Net dry mass—coat
...
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