ASTM D5643-94(2000)e1
(Specification)Standard Specification for Coal Tar Roof Cement, Asbestos Free
Standard Specification for Coal Tar Roof Cement, Asbestos Free
SCOPE
1.1 This specification covers coal tar roof cement suitable for trowel application in coal tar roofing and flashing systems.
1.2 The values stated in inch-pound units are to be regarded as the standard.
1.3 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.
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e1
Designation: D 5643 – 94 (Reapproved 2000)
Standard Specification for
Coal Tar Roof Cement, Asbestos Free
This standard is issued under the fixed designation D 5643; 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—Editorially switched from English dominant to SI dominant.
TABLE 1 Composition of Coal Tar Roof Cement
1. Scope
Water, volume % max 2.0
1.1 This specification covers coal tar roof cement suitable
Nonvolatile matter, mass % min 65
for trowel application in coal tar roofing and flashing systems.
Insoluble matter, mass % 15 to 40
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
only.
5. Performance Requirements
1.3 This standard does not purport to address all of the
5.1 Uniformity—Athoroughly stirred sample shall show no
safety concerns, if any, associated with its use. It is the
separation of solvent or settling that cannot be overcome by
responsibility of the user of this standard to establish appro-
moderatestirringafterstandingfor72hatroomtemperaturein
priate safety and health practices and determine the applica-
a closed container.
bility of regulatory limitations prior to use.
5.2 Workability—The cement shall be of such a consistency
thatitwillspreadreadilyandpermittrowelingsmoothcoatings
2. Referenced Documents
1 1
1.6 to 3.2 mm ( ⁄16 to ⁄8 in.) thick on vertical surfaces.
2.1 ASTM Standards:
5.3 Behavior at 60°C (140°F)—The cement shall show no
D 4 Test Method for Bitumen Content
evidence of blistering, and sag or slide shall be no greater than
D 95 Test Method for Water in Petroleum Products and
6mm( ⁄4in.).
Bituminuous Materials by Distillation
5.4 Adhesion to Wet Surfaces—Minimum average 75 %.
D 140 Practice for Sampling Bituminous Materials
5.5 Flash Point—38°C (100°F) minimum.
D 2822 Specification for Asphalt Roof Cement
D 3143 Test Method for Flash Point of Cutback Asphalt 6. Sampling
with Tag Open-Cup Apparatus
6.1 Sample the material from the original container imme-
D 3409 Test Method forAdhesion ofAsphalt-Roof Cement
diately after stirring to a uniform consistency, in accordance
to Damp, Wet, or Underwater Surfaces
with Practice D 140.
6.2 Restir the samples to obtain uniformity immediately
3. Materials and Manufacture
before withdrawing portions for individual tests.
3.1 Coal tar roof cement shall consist of a processed coal tar
base, volatile solvents, and mineral stabilizers, excluding
7. Test Methods
asbestos, mixed to a smooth uniform consistency suitable for
7.1 Water—See Test Method D 95.
trowel application.
7.2 Nonvolatile Matter—Determine nonvolatile matter in
accordance with Specification D 2822, except heat the dish and
4. Chemical Composition
contents in an oven at 105 to 110°C (221 to 230°F).
4.1 The composition of coal tar r
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