Standard Test Method for Hiding Power of Architectural Paints Applied by Roller

SIGNIFICANCE AND USE
Laboratory hiding power measurements of architectural coatings generally employ blade-type applicators that lay down films of highly uniform thickness. But practical applicators, such as rollers, pads, and brushes, typically apply films that lack uniformity due to incomplete leveling, resulting in the practical hiding power of most paints being less than that measured on films applied with a drawdown blade. This test method simulates practical application procedures and conditions so as to provide an indication of the actual hiding performance obtainable when a paint is applied by an experienced worker. It is not intended to duplicate painting as done by the average consumer.
Since the rheological characteristics of a paint and its interaction with the applicator are influencing factors, rank order correlation between this test and one done by drawdown might not be obtained.
FIG. 1 Practical Opacity Chart in Accordance with Footnote 5 and Appendix X1
SCOPE
1.1 This test method measures the ability of a paint to hide or obscure a surface to which it has been applied by a practical application procedure. This test method covers the use of a paint roller, but the concept is expected to work equally well when the application tool is a paint brush or paint pad.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3  This standard does not purport to address all of the safety concernss, 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.

General Information

Status
Historical
Publication Date
09-Jan-2003
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM D5150-92(2003) - Standard Test Method for Hiding Power of Architectural Paints Applied by Roller
English language
4 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:D5150–92(Reapproved2003)
Standard Test Method for
1
Hiding Power of Architectural Paints Applied by Roller
This standard is issued under the fixed designation D5150; 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 E1347 Test Method for Color and Color-Difference Mea-
surement by Tristimulus Colorimetry
1.1 This test method measures the ability of a paint to hide
or obscure a surface to which it has been applied by a practical
3. Terminology
application procedure. This test method covers the use of a
3.1 Definitions:
paint roller, but the concept is expected to work equally well
3.1.1 hiding power, n—the ability of a paint or paint
when the application tool is a paint brush or paint pad.
material as used to hide or obscure a surface to which it has
1.2 The values stated in inch-pound units are to be regarded
been uniformly applied (see Terminology D16).
as the standard. The values given in parentheses are for
information only.
4. Summary of Test Method
1.3 This standard does not purport to address all of the
4.1 The test paint is applied with a roller at a specified
safety concerns, if any, associated with its use. It is the
spreading rate onto a test chart consisting of a series of light to
responsibility of the user of this standard to establish appro-
dark grey stripes. After drying, a second coat is applied in the
priate safety and health practices and determine the applica-
same manner over half of the chart. After the second coat has
bility of regulatory limitations prior to use.
dried, both the single- and double-coated areas are evaluated
for hiding as judged by the darkest stripe in each area that is
2. Referenced Documents
2
completely or almost completely obscured.
2.1 ASTM Standards:
D16 Terminology for Paint, Related Coatings, Materials,
5. Significance and Use
and Applications
5.1 Laboratory hiding power measurements of architectural
D1475 Test Method For Density of Liquid Coatings, Inks,
coatingsgenerallyemployblade-typeapplicatorsthatlaydown
and Related Products
films of highly uniform thickness. But practical applicators,
D2244 Practice for Calculation of Color Tolerances and
such as rollers, pads, and brushes, typically apply films that
Color Differences from Instrumentally Measured Color
lack uniformity due to incomplete leveling, resulting in the
Coordinates
practical hiding power of most paints being less than that
D3924 Specification for Environment for Conditioning and
measured on films applied with a drawdown blade. This test
Testing Paint, Varnish, Lacquer, and Related Materials
method simulates practical application procedures and condi-
D3925 Practice for Sampling Liquid Paints and Related
tions so as to provide an indication of the actual hiding
Pigmented Coatings
performance obtainable when a paint is applied by an experi-
enced worker. It is not intended to duplicate painting as done
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
by the average consumer.
and Related Coatings, Materials, andApplications and is the direct responsibility of
5.2 Since the rheological characteristics of a paint and its
Subcommittee D01.42 on Architectural Coatings.
interaction with the applicator are influencing factors, rank
Current edition approved Jan. 10, 2003. Published April 2003. Originally
´1
order correlation between this test and one done by drawdown
approved in 1991. Last previous edition approved in 1997 as D5150 – 92 (1997) .
DOI: 10.1520/D5150-92R03.
might not be obtained.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6. Apparatus
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 6.1 Balance, accurate to 0.1 g.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D5150–92 (2003)
9.2 Use the following equation to determine the amount of
2
paint required for each coat on 3 ft of chart area:
1362 3 Paint Density ~lb/gal!
2 2
Grams for 3 ft ~2787 m ! 5
2
Desired Spreading Rate ~ft /gal!
The spreading rate may be either the manufacturer’s recom-
mended spreading rate for each paint, or the same spreading
rate for all paints under test according to agreement between
2 2
producer and user. A spreading rate of 450 ft /gal (11.0 m /L)
is suggested if there is no other preference. Include spreading
rate(s) used in the report.
9.3 At a convenient height, tape a test chart with
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.