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ASTM D6225/D6225M-98(2020)

(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
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.
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 nonconformance 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
30-Apr-2020
ICS
91.060.20 - Roofs
Technical Committee
D08 - Roofing and Waterproofing
Drafting Committee
D08.04 - Felts, Fabrics and Bituminous Sheet Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D6225/D6225M-98(2012)e1 - Standard Test Method for Granule Cover of Mineral Surfaced Roofing
Effective Date
01-May-2020
Refers
ASTM D4977/D4977M-20 - Standard Test Method for Granule Adhesion to Mineral-Surfaced Roofing by Abrasion
Effective Date
01-May-2020
Refers
ASTM D4977/D4977M-03(2019) - Standard Test Method for Granule Adhesion to Mineral Surfaced Roofing by Abrasion
Effective Date
01-May-2019
Refers
ASTM D4977/D4977M-03(2013)e1 - Standard Test Method for Granule Adhesion to Mineral Surfaced Roofing by Abrasion
Effective Date
01-Nov-2013

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ASTM D6225/D6225M-98(2020) - Standard Test Method for Granule Cover of Mineral-Surfaced RoofingASTM D6225/D6225M-98(2020) - Standard Test Method for Granule Cover of Mineral-Surfaced Roofing
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ASTM D6225/D6225M-98(2020) - Standard Test Method for Granule Cover of Mineral-Surfaced Roofing
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Standards Content (Sample)


This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D6225/D6225M −98 (Reapproved 2020)
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.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the hiding 4.1 This test method is used to determine the extent of
powerofgranulesonamineral-surfacedroofingsheet.Thetest coverageofthegranularsurfacingovertheasphalticcoatingin
is used primarily after an abrasion test has been conducted to a sample of mineral-surfaced roofing. The results determine
determine the portion of asphaltic compound that has been compliance with the applicable specification requirements or
exposed as a result of the abrasion test. maybeusedforcomparativeanalysis.Thistestmethodapplies
to both “as manufactured” material and material that has
1.2 The values stated in either SI units or inch-pound units
weathered or undergone other types of exposure.
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
5. Apparatus
system shall be used independently of the other. Combining
5.1 Magnifier—An optical magnifier with a fixed power of
values from the two systems may result in nonconformance
magnification of 8× and a working field of at least
with the standard.
2 2
806mm [1.25 in. ].
1.3 This standard does not purport to address all of the
5.2 Transparency Overlay Grid—A transparency overlay
safety concerns, if any, associated with its use. It is the
withgridmarkings.Thetransparencymustbeofsufficientsize
responsibility of the user of this standard to establish appro-
to cover the area abraded by the abrasion test brush described
priate safety, health, and environmental practices and deter-
in Test Method D4977/D4977M, 32 by 159 mm [1.25 by 6.25
mine the applicability of regulatory limitations prior to use.
in.] with grid lines oriented to form squares 1.27 mm [0.05 in.]
1.4 This international standard was developed in accor-
on a side with 2160 squares/32 by 159 mm[1.25 by 6.25 in.].
dance with internationally recognized principles on standard-
Thegridtransparencymustbecapableofbeingpositionedover
ization established in the Decision on Principles for the
the sample and must permit the operator to clearly view the
Development of International Standards, Guides and Recom-
sample and should be partitioned into groups of squares to
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. facilitate counting (see Fig. 1).
5.3 Light Source—Ahigh-intensity lamp or fluorescent ring
2. Referenced Documents
light, capable of providing sufficient illumination of the
2.1 ASTM Standards:
mineral-surfaced sample to be examined.
D4977/D4977MTest Method for GranuleAdhesion to Min-
eral Surfaced Roofing by Abrasion
6. Test Specimen
6.1 Cut a minimum of three 51 by 229 mm [2 by 9 in.] or
3. Summary of Test Method
larger specimens. Specimens may be Test Method D4977/
3.1 Asample of mineral-surfaced roofing material is exam-
D4977M abrasion test samples.
ined under a magnifying lens and the area left unprotected by
6.2 Care should be taken so that granules do not transfer
granule cover is determined using a transparency overlay with
from one specimen to another.
grid lines.
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, 2020. Published May 2020. Originally
plainly viewed.
approved in 1998. Last previous edition approved in 2012 as D6225/D6225M–98
(2012). DOI: 10.1520/D6225_D6225M-98R20.
7.2 Abr
...

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SCOPE
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SCOPE
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4.1 The wind resistance of ballasted membrane roof systems is determined largely by the size and weight of the ballast used. ANSI/SPRI RP-4 provides a method for the wind design of ballasted single-ply membrane roof systems and includes specific guidelines for the size and weight of aggregate used as ballast. The aggregate size classifications provided in this standard are intended for use with the guidelines provided in ANSI/SPRI RP-4 in designing the wind resistance of aggregate ballasted single-ply membrane roof systems.  
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5.1 Excess moisture trapped in roofing or waterproofing systems can adversely affect performance and lead to premature failure of roofing or waterproofing systems and its components. It also reduces thermal resistance, resulting in reduced energy efficiency and inflated energy costs. Impedance scans can be effective in identifying concealed and entrapped moisture within roofing or waterproofing systems.  
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5.3 This practice alone does not determine the cause of moisture infiltration into roofing or waterproofing systems; however, it can be used to help tracing excess moisture to the point of ingress.
SCOPE
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1.4.2 This practice is not appropriate for use with black EPDM, any membranes containing black EPDM, or black EPDM coatings because black EPDM gives false positive readings.  
1.4.3 Aluminum foil on top-faced insulation, roofing, or waterproofing membranes gives a false positive reading and is not suitable for surveying with impedance scanners; however, liquid-applied aluminum pigmented emulsified asphalt-based coatings shall not normally affect impedance scanner readings.
1.4.3.1 This practice is not appropriate for use with aluminium foil faced modified bitumen membranes, as the electrical conductivity of the aluminium foil surface can give false positive readings.  
1.4.4 While their overburden remains in place, this practice is not appropriate for use with inverted roof membrane assemblies (IRMAs) or protected roof assemblies (PRMAs), which contain above the deck waterproof membrane and overburden that may include insulation, drainage components, pavers, aggregate, ballast, vegetation, or combinations thereof, because the impedance scanner will not differentiate between above and below the membrane moisture.  
1.4.5 S...

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  • Standard
    9 pages
    English language
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