ASTM D6225/D6225M-98(2012)e1
(Test Method)Standard Test Method for Granule Cover of Mineral Surfaced Roofing
Standard Test Method for Granule Cover of Mineral Surfaced Roofing
SIGNIFICANCE AND USE
This test method is used to determine the extent of coverage of the granular surfacing over the asphaltic coating in a sample of mineral surfaced roofing. The results determine compliance with the applicable specification requirements or may be used for comparative analysis. This test method applies to both “as manufactured” material and material that has weathered or undergone other types of exposure.
SCOPE
1.1 This test method covers the determination of the hiding power of granules on a mineral surfaced roofing sheet. The test is used primarily after an abrasion test has been conducted, to determine the portion of asphaltic compound that has been exposed as a result of the abrasion test.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with 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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Designation:D6225/D6225M −98 (Reapproved 2012)
Standard Test Method for
Granule Cover of Mineral Surfaced Roofing
This standard is issued under the fixed designation D6225/D6225M; 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.
ε NOTE—Units information was editorially corrected in June 2012.
1. Scope a sample of mineral surfaced roofing. The results determine
compliance with the applicable specification requirements or
1.1 This test method covers the determination of the hiding
maybeusedforcomparativeanalysis.Thistestmethodapplies
powerofgranulesonamineralsurfacedroofingsheet.Thetest
to both “as manufactured” material and material that has
is used primarily after an abrasion test has been conducted, to
weathered or undergone other types of exposure.
determine the portion of asphaltic compound that has been
exposed as a result of the abrasion test.
5. Apparatus
1.2 The values stated in either SI units or inch-pound units
5.1 Magnifier—An optical magnifier with a fixed power of
are to be regarded separately as standard. The values stated in
magnification of 8× and a working field of at least 806
each system may not be exact equivalents; therefore, each
2 2
mm [1.25 in. ].
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance
5.2 Transparency Overlay Grid—A transparency overlay
with the standard.
withgridmarkings.Thetransparencymustbeofsufficientsize
1.3 This standard does not purport to address all of the to cover the area abraded by the abrasion test brush described
safety concerns, if any, associated with its use. It is the
in Test Method D4977, 32 by 159 mm [1.25 by 6.25 in.] with
responsibility of the user of this standard to establish appro- gridlinesorientedtoformsquares1.27mm[0.05in.]onaside
priate safety and health practices and determine the applica-
with 2160 squares/32 by 159 mm[1.25 by 6.25 in.]. The grid
bility of regulatory limitations prior to use. transparency must be capable of being positioned over the
sampleandmustpermittheoperatortoclearlyviewthesample
2. Referenced Documents
and should be partitioned into groups of squares to facilitate
2.1 ASTM Standards: counting (see Fig. 1).
D4977Test Method for Granule Adhesion to Mineral Sur-
5.3 Light Source—Ahigh intensity lamp or fluorescent ring
faced Roofing by Abrasion
light, capable of providing sufficient illumination of the min-
eral surfaced sample to be examined.
3. Summary of Test Method
3.1 Asample of mineral surfaced roofing material is exam-
6. Test Specimen
ined under a magnifying lens and the area left unprotected by
6.1 Cut a minimum of three 51 by 229 mm [2 by 9 in.] or
granule cover is determined using a transparency overlay with
grid lines. larger specimens. Specimens may be Test Method D4977
abrasion test samples.
4. Significance and Use
6.2 Care should be taken so that granules do not transfer
4.1 This test method is used to determine the extent of
from one specimen to another.
coverageofthegranularsurfacingovertheasphalticcoatingin
7. Preparation of Apparatus
ThistestmethodisunderthejurisdictionofASTMCommitteeD08onRoofing
7.1 Place the specimen to be examined on a flat surface and
andWaterproofingandisthedirectresponsibilityofSubcommitteeD08.04onFelts,
Fabrics and Bituminous Sheet Materials. arrangethelightsourceandmagnifiersothatthesamplecanbe
Current edition approved May 1, 2012. Published June 2012. Originally
plainly viewed.
approved in 1998. Last previous edition approved in 2004 as D6225–98 (2004).
DOI: 10.1520/D6225_D6225M-98R12E01.
7.2 Abrasion test 51 by 229 mm [2 by 9 in.] specimens can
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
be examined by removing the clamping tray from the abrasion
contact ASTM Customer Service at service@astm.org. For An
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D6225–98 (Reapproved 2004) Designation: D6225/D6225M – 98
´1
(Reapproved 2012)
Standard Test Method for
Granule Cover of Mineral Surfaced Roofing
This standard is issued under the fixed designation D6225/D6225M; 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.
´ NOTE—Units information was editorially corrected in June 2012.
1. Scope
1.1 This test method covers the determination of the hiding power of granules on a mineral surfaced roofing sheet. The test is
used primarily after an abrasion test has been conducted, to determine the portion of asphaltic compound that has been exposed
as a result of the abrasion test.
1.2The values stated in SI units are regarded as the standard.The inch-pound units given in parentheses are for information only.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with 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.
2. Referenced Documents
2.1 ASTM Standards:
D4977 Test Method for Granule Adhesion to Mineral Surfaced Roofing by Abrasion
3. Summary of Test Method
3.1 Asample of mineral surfaced roofing material is examined under a magnifying lens and the area left unprotected by granule
cover is determined using a transparency overlay with grid lines.
4. Significance and Use
4.1 This test method is used to determine the extent of coverage of the granular surfacing over the asphaltic coating in a sample
of mineral surfaced roofing. The results determine compliance with the applicable specification requirements or may be used for
comparative analysis. This test method applies to both “as manufactured” material and material that has weathered or undergone
other types of exposure.
5. Apparatus
5.1 Magnifier—An optical magnifier with a fixed power of magnification of 83 and a working field of at least 806 mm (1.25
[1.25 in.
in. ). ].
5.2 Transparency Overlay Grid—A transparency overlay with grid markings. The transparency must be of sufficient size to
cover the area abraded by the abrasion test brush described in Test Method D4977, 32 by 159 mm (1.25[1.25 by 6.25 in.)in.] with
grid lines oriented to form squares 1.27 mm (0.05 in.)[0.05 in.] on a side with 2160 squares/32 by 159 mm(1.25mm [1.25 by 6.25
in.).in.]. The grid transparency must be capable of being positioned over the sample and must permit the operator to clearly view
the sample and should be partitioned into groups of squares to facilitate counting (see Fig. 1).
5.3 Light Source—A high intensity lamp or fluorescent ring light, capable of providing sufficient illumination of the mineral
surfaced sample to be examined.
This test method is under the jurisdiction ofASTM Committee D08 on Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.04 on Felts and
Fabrics.
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Current edition approved Dec. 1, 2004. Published December 2004. Originally approved in 1998. Last previous edition approved in 1998 as D6225–98 . DOI:
10.1520/D6225-98R04.on Felts, Fabrics and Bituminous Sheet Materials.
Current edition approved May 1, 2012. Published June 2012. Originally approved in 1998. Last previous edition approved in 2004 as D6225 – 98 (2004). DOI:
10.1520/D6225_D6225M-98R12E01.
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM Inte
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